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GB
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UDC
P GB 50010 2002
Code for design of concrete structures
2002 02 20 2002 04 01
1
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Code for design of concrete structures
GB 50010-2002
:
:
:2 0 0 2 4 1
2002
2
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[2002]47
(
[1997]108 )
GB 50010-2002 2002 4 1 3.1.8 3.2.1 4.1.3 4.1.4 4.2.2 4.2.3 6.1.1
9.2.1 9.5.1 10.9.3
10.9.8 11.1.2 11.1.4 11.3.1 11.3.6 11.4.12 11.7.11
GBJ10-89 2002 12 31
2002 2 20
3
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50010-2002
[1997]108
:
30
(:100013 E-mail:[email protected])
:
:
:
4
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50010-2002
1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .. . . . . 8
2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .. . . . . 9
2.1
.......................................................................................................
9
2.2
......................................................................................................10
3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . .. . . 15
3.1
..............................................................................................15
3.2
................................................................16
3.3
................................................................17
3.4
..........................................................................................18
4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . .. . . . . . . . . . . . . . . . . 21
4.1
..................................................................................................21
4.2
......................................................................................................22
5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .. . . 28
5.1
..............................................................................................28
5.2
...................................................................................29
5.3
.......................................................................................30
6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . 32
6.1
..............................................................................................32
6.2
...............................................................................37
7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42
7.1
............................................................42
7.2
........................................................................44
7.3
........................................................................48
7.4
........................................................................59
7.5
...............................................................................61
7.6
...........................................................................68
7.7
...............................................................................75
5
@
7.8
...........................................................................79
7.9
...............................................................
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8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . .
8.1 ........................................................
8.2 ................................................
9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . 9.1
...............................................................
9.2 ........................................................
9.3
...........................................................
9.4
...........................................................
9.5 .................................
9.6 .............................
10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
10.1
.........................................................................
10.2
.........................................................................
10.3
.........................................................................
10.4 .......................................................
10.5
.........................................................................
10.6 ..................................................
10.7
..........................................................
10.8
...............................................................
10.9 ......................................................
10.10 ................................................
11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11.1 .......................................................
11.2
...............................................................
11.3
.............................................................
11.4 ..................................................
11.5
..........................................................
11.6 .......................................
11.7
.............................................................
11.8 .......................................
6
@
A . . . . . . . . . . . . . . . . . . . . . . . . . . A.1
........................................................
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50010-2002
A.2 ........................................................
A.3 ........................................................
A.4 .......................................................
A.5
..............................................................
B
C . . . . . . . . . . . . . . . .
C.1
................................................................
C.2 - ..............................................
C.3
...............................................................
C.4 ............................................
D . .
E . . . . . . . . . . . . . . . . . . . . . . .
F . . . . . . . . . . . . .
G . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .
7
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1
1.0.1
1.0.2
1.0.3
8
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50010-2002
2
2.1
2.1.1 concrete structure
2.1.2 plain concrete structure
2.1.3 reinforced concrete structure
2.1.4 prestressed concrete structure
2.1.5 pretensioned prestressed concrete structure
2.1.6 post-tensioned prestressed concrete st ructure
2.1.7 cast-in-situ concrete structure
2.1.8 prefabricated concrete structure
2.1.9 assembled monolithic concrete structure
2.1.10 frame structure
2.1.11 shearwall structure
9
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50010-2002
2.1.12 - frame-shearwall structure
2.1.13 deep flexural member
5 2.1.14 deep beam
2 2.5
2.1.15 ordinary steel bar
2.1.16 prestressing tendon
2.1.17 degree of reliability
2.1.18 safety class
2.1.19 design working life
2.1.20 load effect
2.1.21 load effect combination
2.1.22 fundamental combination
2.1.23 characteristic combination
2.1.24 quasi-permanent combination
2.2
2.2.1
10
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GB
50010-2002
f
cE
Es
C20 20N/mm2
f cu 150mm fcu k 150mm
fck fc
ftk ft
f ck f tk
fyk fptk
fy f y
fpy fpy
2.2.2
N
Nk Nq
Np
Np0
Nu0
Nux Nuy x y
M
Mk Mq
Mu
Mcr
T
V
Vcs
Fl
ck cq
pc
tp cp
11
@
min,max, c
f
c
f
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50010-2002
s p
sk
con
p0 pe
l l
wmax
2.2.3
a
s a s
p ap
b T I
bf b f T I
d
c
e e
e0
ea
ei
h
h0
hf h f T I
i
rc
la
l0
s
x
12
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y0 yn
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GB
50010-2002
z
A
A0
An As A s
Ap Ap
Asvl Ast1
Astl
Asv Ash
Asb Apb
Al
Acor
B
W
W0
Wn
Wt
I
I0
In
2.2.4
1
E
c
1 ()
l
13
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50010-2002
sv sh
v
14
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50010-2002
3
3.1
3.1.1
3.1.2
:
1 :
2 :
3.1.3
:
1 :()
2 :
3 :
4 :
3.1.4 ()
15
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1.5
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50010-2002
GB50011
3.1.5 9
10 A
3.1.6
3.1.7
GB50068
3.1.8
3.2
3.2.1
3.2.1
3.2.1
3.2.2
3.2.3
:
S0 R (3.2.3-1)
R=R(fc,fs,k, ) (3.2.3-2)
0 : 100
1.1 50
1.0 5 0.9
16
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50010-2002
GB50009 GB50011
R
RER( )
fc fs
k
(3.2.3-1) 0S (N M V T )
6.1.1
3.3
3.3.1
:
S C (3.3.1)
S
C
GB50009
3.3.2
3.3.2
3.3.2
l0 500
l0 600
l0 7m
7m l0 9m
l0 9m
l0 200(l0/250)l0 250(l0 300)
l0 300(l0 400)
1 l0
2
3
4 l0 2
17
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50010-2002
:
3.3.4
3.3.4 3.4.1 3.3.4
Wlim
3.3.4
lim(mm) lim(mm)
0.3(0.4) 0.2
0.2
0.2
1
2 60
3
0.2mm 0.3mm
4
5
8
6
7
8
3.4
3.4.1 3.4.1
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50010-2002
3.4.1
a
b
JGJ 24
3.4.2 50 3.4.2
3.4.2
(kg/m3)
( )
(kg m3)
0.65 225 C20 1.0
a 0.60 250 C25 0.3 3.0
b 0.55 275 C30 0.2 3.0
0.50 300 C30 0.1 3.0
1 2 0.06 300kg m3
3 25kg m3
4
5
6
3.4.3 100 :
1 C30
C40
2 0.06%
3
3.0kg/m3
19
@
4 9.2.1 40%
5
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3.4.4 100
3.4.5
3.4.6
3.4.7
3.4.8
20
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4
4.1
4.1.1
150mm 28d
95%
4.1.2 C15 HRB335
C20 HRB400 RRB400
C20
C30
C40
:
4.1.3 fck tk 4.1.3 f
4.1.3 (N mm2)
C15 C20 C25 C30 C35 C40 C45 C50 C55 G60 C65 C70 C75 C80
fck 10.0 13.4 16.7 20.1 23.4 26.8 29.6 32.4 35.5 38.5 41.5 44.5
47.4 50.2
ftk 1.27 1.54 1.78 2.01 2.20 2.39 2.51 2.64 2.74 2.85 2.93 2.99
3.05 3.11
4.1.4 fc ft 4.1.4
4.1.4 (N mm2)
C15 C20 C25 C30 C35 C40 C45 C50 C55 C60 C65 C70 C75 C80
fc 7.2 9.6 11.9 14.3 16.7 19.1 21.1 23.1 25.3 27.5 29.7 31.8
33.8 35.9
ft 0.91 1.10 1.27 1.43 1.57 1.71 1.80 1.89 1.96 2.04 2.09 2.14
2.18 2.22
1 300mm
0.8 ( )
2
4.1.5 Ec 4.1.5
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50010-2002
4.1.5 ( 104N mm
2)
C15 C20 C25 C30 C35 C40 C45 C50 C55 C60 C65 C70 C75 C80
Ec 2.20 2.55 2.80 3.00 3.15 3.25 3.35 3.45 3.55 3.60 3.65 3.70
3.75 3.80
4.1.6 ffc ft 4.1.4
f
4.1.6 fc
:fc
f
c
f
cf
c
max,
min,
= 4.1.6
fc min, fc max,
4.1.6
f
c fc 0.2 0.2
f
c 0.3 0.3 fc 0.4 0.4
f
c 0.5 fc 0.5
0.74 0.80 0.86 0.93 1.0
60
20%
4.1.7 E 4.1.7 fc
4.1.7 ( 104N mm
2)
C20 C25 C30 C35 C40 C45 C50 C55 C60 C65 C70 C75 C80
f
cE 1.1 1.2 1.3 1.4 1.5 1.55 1.6 1.65 1.7 1.75 1.8 1.85 1.9
4.1.8 0 100 c 1 10-5/
c 0.2
Gc 4.1.5 0.4
4.2
4.2.1 :
22
@
1 HRB400 HRB335 HPB235
RRB400
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2
:1
2 HRB400 HRB335 GB1499
HRB400 HRB335 HPB235 GB13013 Q235 RRB400
GB13014 KL400
3 GB/T5223
4
4.2.2 95%
fyk
fptk
4.2.2-1
4.2.2-2
B
4.2.2-1 (N mm2) d(mm) fyk
HPB235(Q235) 8 20 235
HRB335(20MnSi) 6 50 335
HRB400(20MnSiV 20MnSiNb 20MnTi) 6 50 400
RRB400(K20MnSi) R 8 40 400
1 d
2 4mm
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50010-2002
4.2.2-2 (N mm2)
d(mm) fptk
8.6 10.8 1860 1720 15701x3
12.9 1720 1570
9.5 11.1 12.7 1860
1 7
15.2 1860 1720
4 5 1770 1670 1570
6 1670 1570
p
H7 8 9 1570
i 5 7 1570
40Si2Mn 6
48Si2Mn 8.2
45Si2Cr
ht
10
1470
1 d GB
T5224 Dg d
2 d 4 9mm d 4 8mm
4.2.3 fy f y 4.2.3-1
fpy f y 4.2.3-2 p
4.2.3-1 (N mm2)
fy yf
HPB 235(Q235) 210 210
HRB 335(20MnSi) 300 300
HRB 400(20MnSiV 20MnSiNb 20MnTi) 360 360
400(K20MnSi) R 360 360
300N mm2
300N/mm2
24
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50010-2002
4.2.3-2 (N mm2)
fptk fpy pyf
1860 1320
1720 12201 3
1570 1110
390
1860 1320
1 7
S
1720 1220390
1770 1250
1670 1180
P
H1570 1110
410
I 1570 1110 410
40Si2Mn
48Si2Mn
45Si2Cr
HT 1470 1040 400
4.2.2-2
4.2.4 Es 4.2.4
4.2.4 ( 105N mm
2)
Es
HPB 235 2.1
HRB 335
HRB 400
RRB 400
2.0( ) 2.05
1.95
4.2.5 f fy f
f
py
f
s
f
p 4.2.5-1 4.2.5-2
fs :
f
s
fsf
s
max,
min,
= (4.2.5-1)
fs min,f
s max,
fp :
f
p
f
pf
p
max,
min,
= (4.2.5-2)
25
@
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p min,
f
p max,
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50010-2002
4.2.5-1 (N mm2)
f
yf
HPB 235 HRB 335 HRB 400
1.0
f
s 0.6 160
0.6f
s 0.4 155
0.4f
s 0 150
0f
s 0.1 145 165 165
0.1f
s 0.2 140 155 155
0.2f
s 0.3 130 150 150
0.3f
s 0.4 120 135 145
0.4f
s 0.5 105 125 130
0.5f
s 0.6 105 115
0.6f
s 0.7 85 95
0.7f
s 0.8 65 70
0.8f
s 0.9 40 45
1
0.8
2 RRB400
4.2.5-2 (N mm
2
)f
py
0.7f
p 0.8 0.8f
p 0.9
fptk=1770 1670 210 140
fptk 1570 200 130
fptk=1570 180 120
120 105
1 f
p 0.9
26
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50010-2002
2
27
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50010-2002
5
5.1
5.1.1
()()
5.1.2
5.1.3
5.1.4 :
1
2
3
5.1.5
:
5.1.6
28
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50010-2002
5.2
5.2.1
5.2.2
:
1
2
3
5.2.3 :
1
2
3
4
5.2.4 :
1 4.1.5
2
3 T
4
5
5.2.5
5.2.6
29
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50010-2002
5.2.8
C
5.3
5.3.1
-
5.3.2
5.3.3
5.3.4
:
1
2
3
- C
4
30
@
5
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50010-2002
5.3.5
5.3.6
31
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50010-2002
6
6.1
6.1.1
1.0
1.2 1.0
6.1.2 HRB400
HRB335 RRB400
6.1.3 con 6.1.3
0.4fptk
6.1.3 0.05fptk:
1
2
6.1.3
0.75fptk 0.75fptk
0.70fptk 0.65fptk
6.1.4
75%
6.1.5
:
1
32
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50010-2002
0
0
00
0
0y
I
eN
A
N ppppc = (6.1.5-1)
pcElconpe
= (6.1.5-2)
lconp =0 (6.1.5-3)
2
n
n
n
n
pnp
n
p
pc yI
My
I
eN
A
N2 (6.1.5-4)
lconpe = (6.1.5-5)
pcElconp +=0 (6.1.5-6)
An
A0 :
I0 In
ep0 epn
6.1.6
y0 yn
l 6.2.1 6.2.7
E : E=Es/Ec Es
4.2.4 Ec 4.1.5
Np0 Np
6.1.6
33
@
M2 N
6.1.7
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50010-2002
:1 (6.1.5-1) (6.1.5-4)
(6.1.5-2) (6.1.5-6) pc pc
2
6.1.6 ( 6.1.6)
:
1
slslppppp AAAAN += 55000 (6.1.6-1)
slslpppp
sslsslpppppp
pAAAA
yAyAyAyAe
+
=
5500
5500
0
(6.1.6-2)
2
slslppeppep AAAAN += 55 (6.1.6-3)
slslppeppe
snslsnslpnppepnppe
pnAAAA
yAyAyAyAe
+
+=
55
55
(6.1.6-4)
p0 p0
pe pe
Ap A p
As A s
yp y p
ys y s
l5 l5
6.2.5
ypn y pn ysn y sn
:(6.1.6-1)(6.1.6-4) A p=0 l5=0
34
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50010-2002
6.1.7
:1 M2 :
12 MMM r = (6.1.7-1)
pnpeNM =1 (6.1.7-2)
Np (6.1.63)
epn
(6.1.6-4)
Ml N
Mr N
2
1.2 1.0
3
1.0
6.1.8 9.5
0.3
10% >0.3
7
6.1.9 ltr:
df
altk
pe
ur =
(6.1.9)
pe
d B
9.3.1
f tk f cu
4.1.3
35
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50010-2002
6.1.10
fpy la
9.3.1 6.1.11
()
( 6.1.11):
ct tkf (6.1.11-1)
ct 0.8 (6.1.11-2)tkf
:
cc =ct00 W
M
A
N kkpc
+ 6.1.11-3
cc ct
f tk f ck f cu
4.1.3
Nk Mk
W0
36
@
6.1.12
:
ct 2 (6.1.12-1)tkf
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GB
50010-2002
cc 0.8 (6.1.12-2)tkf
ct cc 6.1.11
6.1.13 :
1 (A s+Ap)/A 0.2% A p A
2
ct=2f tk A s/A 0.4% f tk< ct
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50010-2002
6.2.1 (N mm2)
l1
6.2.2
6.2.2
6.2.3
6.2.4
l2
l3 2 t
0.4
ptk
con
f
0.5 con
=1
0.9
con 0.7fptk
0.125
ptk
con
f
0.5 con
0.7fptk con 0.8fptk
0.2ptk
con
f0.575 con
l4
0.05 con
0.035 con
l5 6.2.5
d 3m
l6 30
1 t ( )
2 1.03 con
1.05 con 2min con
3 con fptk 0.5
6.2.2 l1
:
38
@
sl Ela=1 (6.2.2)
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50010-2002
(mm) 6.2.2
l (mm)
6.2.2 (mm)
A
1() 1
() 5
5
6 8
1
2
1mm
6.2.3
l1
lf
6.2.4
lf l1
D
6.2.4 l2( 6.2.4)
:
=
+
kxconl
e
112 (6.2.4-1)
( + ) 0.2 l2 :
conl kx )(2 += (6.2.4-2)
x (m)
(rad)
6.2.4
6.2.4
39
@
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50010-2002
6.2.4
0.0015 0.25
0.0010 0.30
0.0014 0.55
1
2
6.2.5 l5
l5 :
1
151
28045
5 +
+
= cu
pc
l
f(6.2.5-1)
+
+
=151
28045
5
cu
pc
l
f(6.2.5-2)
151
28035
5 +
+
= cu
pc
l
f(6.2.5-3)
40
@
+
+
=151
28035
5
cu
pc
l
f(6.2.5-4)
pc pc
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GB
50010-2002
f cu
=(Ap+As)/A0 =(A p+A s)/A0
=(Ap+As)/An =(A p+A s)/An
pc pc
6.1.5 6.1.6 (
) l5 l5 pc pc
0.5f cu pc (6.2.5-2) (6.2.5-4) pc
pc pc
40% l5 l5 30%
2
E
:
6.2.6
()
con () E pci pci
6.2.7 6.2.7
6.2.7
() l1+ l2+ l3+ l4 l1 l2
() l5 l4+ l5+ l6
l4
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50010-2002
7
7.1
7.1.1 7.1 7.4
5 10 10.7
7.1.2 :
1
2
3 :
c 0
=
n
c
cc f0
11
(7.1.2-1)
0< c cu
cc f= (7.1.2-2)
c c
fc 4.1.4
0 fc 0 0.002
0.002
cu (7.1.2-5)
cu 0.0033 0.0033 0
fcu k 4.1.1
n n 2.0 2.0
4
0.01
7.1.3
42
@
x
1 C50 1 0.8
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50010-2002
C80 1 0.74
fc 1
C50 1 1.0 C80 1 0.94
7.1.4
b :
1
cus
y
b
E
f
+
=
1
1 (7.1.4-1)
cus
y
cu
b
E
f
++
=002.0
1
1 (7.1.4-2)
2
cus
ppy
cu
b
E
f
0
1
002.01
++
= (7.1.4-3)
b : b=xb/h0
xb
h0 :
fv 4.2.3-1
fpy 4.2.32
Es 4.2.4
p0
(6.1.5-3)(6.1.5-6)
cu (7.1.2-5)
1 7.1.3
:
43
@
7.1.5 :
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50010-2002
1 :
= 101
x
hE icussi
(7.1.5-1)
ip
i
cuspix
hE 0
01 1
= + (7.1.5-2)
2 :
=
101
ib
y
si h
xf(7.1.5-3)
ip
ib
ippy
pih
xf01
01
0
= + (7.1.5-4)
3 (7.1.51)(7.1.54):
yf si fy (7.1.5-5)
pyip f0 pi fpy (7.1.5-6) si fy si=fy si
f y si=-f y pi fpy pi=fpy
pi ( p0i-f py) pi= p0i-f py
h0i i
x
si pi i
f y f py 4.2.3-1
4.2.3-2
p0i i
(6.1.5-3)(6.1.5-6)
7.1.6 F
7.2
44
@
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50010-2002
( 7.2.1):
M ssyxc ahAfx
hbf + 001 ()2
( )
)()( 00 pppyp ahAf (7.2.1-1)
:
ppypppysysyc AfAfAfAfbxf ++= )( 01 (7.2.1-2)
:
x bh0 (7.2.1-3)
x 2 (7.2.1-4)a
M
1 7.1.3
fc 4.1.4
As A s
Ap A p
p0
b T
h0
s p
( p0-f py) (7.2.1-4)
s
45
@
7.2.2 T I ( 7.2.2)
:
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50010-2002
1
ppysy AfAf + ppypsysyffc AfAfAfhbf ++ )( 01
(7.2.2-1)
b f 2 (7.2.2-1)
M
+
2
)(2
0101
f
ffcc
hhhbbf
xhbxf
)()()( 000 pppypssy ahAfahAf + (7.2.2-2)
:
ppypppysysyffc AfAfAfAfhbbbxf ++=+ )()( 01 (7.2.2-3)
h f T I
b f T I 7.2.3
T I
(7.2.1-3)(7.2.1-4)
7.2.3 T I L b f 7.2.3
46
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50010-2002
7.2.3 T I L fb
T I L
1 l0 l0/3 l0 3 l0 6
2 () sn b+sn b+sn/2
fh h0 0.1 b+12 fh
0.1 fh
h0 0.05 b+12fh b+b f
hb+5 f
h3
fh
fh h0 0.05 b+12 fh b b+5 f
h
1 b
2 3
3 T I L hh fh bh
3hh 3 2bh(T I )
bh( L )
4
b
7.2.4 (7.2.13)
(7.2.1-2)(7.2.2-3)
x
7.2.5 (7.2.1-4)
:
M )()( sssyspppy aahAfaahAf +
(7.2.5))()( 0 spppyp aaAf +
s p
7.2.6 7.3.7
7.3.8 (7.3.71) (7.3.7-3)(7.3.8-1)
N=0 (7.3.7-2) (7.3.7-4)(7.3.82)
N ei M
47
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50010-2002
7.3
7.3.1 10.3
( 7.3.1):
N 0.9 (7.3.1))( syc AfAf +
N
7.3.1
fc 4.1.4
A
A s
3% (7.3.1) A (A-A s)
7.3.1
l0/b 8 10 12 14 16 18 20 22 24 26 28
l0/d 7 8.5 10.5 12 14 15.5 17 19 21 22.5 24
l0/i 28 35 42 48 55 62 69 76 83 90 97
1.00 0.98 0.95 0.92 0.87 0.81 0.75 0.70 0.65 0.60 0.56
l0/b 30 32 34 36 38 40 42 44 46 48 50
l0/i 26 28 29.5 31 33 34.5 36.5 38 40 41.5 43
l0/i 104 111 118 125 132 139 146 153 160 167 174
0.52 0.48 0.44 0.40 0.36 0.32 0.29 0.26 0.23 0.21 0.19
: l0 7.3.11 b
d i
7.3.2
10.3 ( 7.3.2):
48
@
N 0.9( ) (7.3.2-1)02 ssysycorc AfAfAf ++
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50010-2002
s
AdA sscor
ss
1
0
= (7.3.2-2)
fy
Acor :
Ass0
dcor :
Assl
s
: C50
1.0 C80 0.85
:1 (7.3.2-1)(7.3.1)
1.5
2 7.3.1
:
1) l0/d>12
2) (7.3.2-1)(7.3.1)
3) Ass0 25%
7.3.3
ea 20mm 1/30
7.3.4 ( 7.3.4):
N sssyc AAfbxf +1
ppppyp AAf )( 0 (7.3.4-1)
Ne )(2
001 ssyc ahAfx
hbxf +
)()( 00 pppyp ahAf (7.3.4-2)
49
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50010-2002
ah
ee i +=
2
(7.3.4-3)
(7.3.4-4)ai eee += 0
e
7.3.10
s p
ei
e0 :e0=M/N
ea 7.3.3
:
1 s p :
1) b s=fy p=fpy
=x/h0
2) > b s p 7.1.5
2 (7.2.1-4)
7.2.5
(7.2.5) M Ne s e s
(7.3.4-4)
50
@
3 N>fcbh :
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50010-2002
N e ssyc ahAfh
hbhf +
00 (
2
)()( 00 pppyp ahAf (7.3.4-5)
)(2
0 aeeah
e = (7.3.4-6)
e
h 0
4 (As =As)
:
)(
)5.01(
0
2
01
sy
cesahf
bhfNA
=
(7.3.4-7)
:
b
c
sb
ce
cb
bhfah
bhfN
bhfN
+
+
=
01
01
2
01
01
))((
43.0(7.3.4-8)
7.3.5 I b f 7.2.3
:1 x h f b f
2 x>h f( 7.3.5) :
N sssyffc AAfhbbbxf ++ )(1
ppppyp AAf )( 0 (7.3.5-1)
Ne
+
2
)(
2001
f
ffc
hhhbb
xhbxf
51
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50010-2002
)))()( 000 pppypssy ahAfahAf + (7.3.5-2)
s p
7.3.4
3 x>(h-hf)
bf 7.2.3
4 N>fcA
:
N e
+
2
()(2
00
f
ffc
hhhbb
hhbhf
0(2
)( hAfahhbb syf
ff +
+
) (7.3.5-3)()() 00 pppyps ahAfa
)( 0 aeeaye = (7.3.5-4)
y y
=h/2
: T bf=b
T b f=b
7.3.6 T I
( 7.3.6) :
52
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50010-2002
N ffc hbbbhf + )(01
swsssy NAAf ++ (7.3.6-1)
Ne
+
2)()5.01(
0
2
01
f
ffc
hhhbbbhfa
swssy MahAf ++ )( 0 (7.3.6-2)
swywsw AfN
+=
1
1
5.01 (7.3.6-3)
swswywsw hAfM
=
2
1
15.0
(7.3.6-4)
Asw
fyw 4.2.3-1
Nsw > 1
= 1
Msw As > 1
= 1
hsw h0 =hsw/h0
hsw=h0- s
As s
7.3.4 7.3.5
: 4
53
@
7.3.7 ( 7.3.7)
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50010-2002
:
1
N sytc AfAf )(1 + (7.3.7-1)
ieN
2sin
)( 211 rrAfc +
)sin(sint
ssy rAf+
+ (7.3.7-2)
2
N pppytppyppc AfAfAAf )( 001 + (7.3.7-3)
ieN
sin
2
sin)( 211 pppyc rAfrrAf ++
tppppy rAf
sin)( 0+ (7.3.7-4)
:
5.11 =t (7.3.7-5)
ai eee += 0 (7.3.7-6)
A
As
Ap
r1 r2
rs
rp
e0
54
@
ea 7.3.3
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50010-2002
t >2/3
t=0
3
+< 21
2
2
arccosrr
r
7.3.8
: 6 r1/r2 0.5
7.3.8 ( 7.3.8)
:
N sytc AfAf )()2
2sin1(1
+ (7.3.8-1)
ieN
tssyrc rAfAf
sinsinsin
3
2 3
1
++ (7.3.8-2)
225.1 =t (7.3.8-3)
ai eee += 0 (7.3.8-4)
A
As
r
rs
e0
ea 7.3.3
(rad) 2
55
@
t >0.625
t=0
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50010-2002
: 6
7.3.9
ei 7.3.10
7.3.12
7.3.10 T I
:
21
20
0/1400
11
+=
h
l
hei(7.3.10-1)
N
Afc
5.01
= (7.3.10-2)
h
l02 01.015.1 = (7.3.10-3)
l0 7.3.11
h
h0 h0=r2+rs h0=r+rs
r r2 rs 7.3.7 7.3.8
1 1>1.0 1=1.0
A T I A=bh+2(b f-b)h f
2 l0/h
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50010-2002
7.3.11-1
l
1.5H 1.0 H 1.2H
1.25H 1.0 H 1.2H
2.0Hu 1.25 Hu 1.5 Hu
1.0 Hl 0.8 Hl 1.0 Hl
2.0Hl 1.0 Hl
0
1 H Hl
Hu
2
3 Hu / Hl 0.3
Hu / Hl 0.3 2.5 Hu
2 l0 7.3.11-2
7.3.11-2
l0
1.0H 1.25 H
1.25 H
1.5 H
H
3 75%
l0 :[ Hl lu )(15.010 ++= ] (7.3.11-1)
Hl )2.02( min0 += (7.3.11-2)
u l
min u l
H 7.3.11-2
57
@
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50010-2002
EcI : 0.4 0.6
0.45 7.3 ei
(M/N+ea) M N
: 0.7
7.3.13
7.3.14 (
7.3.14) :
1 F F (F.0.17)(F.0.1-8)
Mx My N xeix N yeiy :
axxix eee += 0 (7.3.14-1)
(7.3.14-2)ayyiy eee += 0
e0x e0y y x:e0x=M0x/N e0y=M0y/N
M0x M0y x y
eax eay x y 7.3.3
58
@
x y x y 7.3.10
2 :
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50010-2002
N
0
111
1
uuyNNNux
++(7.3.14-3)
Nu0
Nux x xeix
x 7.3.10
Nuy y yeiy
y 7.3.10
Nu0 (7.3.1)
N Nu0 0.9
Nux :
1) Nux 7.3.4 7.3.5
N Nux
2) Nux 7.3.6
N Nux
Nuy Nux
7.4
7.4.1 :
N ppysy AfAf + (7.4.1)
N As Ap
7.4.2 :
1
As Ap A s A p (
7.4.2a):
59
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50010-2002
eN )()( 00 pppyssy ahAfahAf + (7.4.2-1)eN )()( 00 pppyssy
ahAfahAf + (7.4.2-2)
2
As Ap A s A p (
7.4.2b):
N syppysy AfAfAf +
bxfaAf cppyp 10 )( + (7.4.2-3)
Ne )(2
001 ssyc ahAfx
hbxfa +
)()( 00 pppyp ahAf (7.4.2-4)
(7.2.1-3)
(7.2.1-4)
(7.4.2-2)
3
(7.4.2-2)
7.4.3 T I
(7.4.41)
Mu (7.3.61)(7.3.6-2)
N=0 Mu Ne
60
@
(7.4.4-1) Mu
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50010-2002
7.2.6 Mu N ei
7.4.4
:
N
uu M
e
N
0
0
11
+(7.4.4-1)
Nu0
e0
Mu
Nu0 (7.4.1)
Nu0 N Mu 7.1
(7.4.4-1) e0/Mu :
2
0
2
00
+
=
uy
yx
u M
e
Mux
e
M
e(7.4.4-2)
e0x e0y y x
Mux Muy x y 7.2
7.5
7.5.1 T I :
hw/b 4
V 025.0 bhfcc (7.5.1-1)
hw/b 6
V 02.0 bhfcc (7.5.1-2) 4 hw/b 6
V
c : C50 c=1.0
C80 c=0.8
fc 4.1.4
b T I
61
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50010-2002
hw : T
I
:1 T I (7.5.1-1)
0.3
2
7.5.2 :
1 ( 7.5.2a b 1-1)
2 ( 7.5.2a 2-2 3-3)
3 ( 7.5.2b 44)
4
:1
2 ()
10.2.10 10.2.8
7.5.3
:
V 0.7 (7.5.3-1)0bhfth
4/1
0
800
=
hh (7.5.3-2)
V
h : h02000mm
h0=2000mm
ft 4.1.4
62
@
7.5.4 T I
:
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50010-2002
V pcs VV + (7.5.4-1)
00 25.17.0 hs
AfbhfV svyvtcs += (7.5.4-2)
005.0 pp NV = (7.5.4-3) V
Vcs
Vp
Asv :Asv=nA sv1
Asvl
s
fyv 4.2.3-1 fy
Np0
6.1.14 Np0>0.3fcA0 Np0=0.3fcA0 A0
(
75%) (7.5.4-1)
(7.5.4-2):
001
75.1h
s
AfbhfV svyvtcs ++
=
(7.5.4-4)
= /h0
3 =3
:1 Np0
Vp=0
2 Np0 6.1.9 8.1.8
7.5.5 T I
:
V ssbypcs aAfVV sin8.0++
63
@
ppbpy aAf sin8.0+ (7.5.5)
V 7.5.6
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50010-2002
Vp (7.5.4-3)
Np0
Asb Apb
s p
7.5.6 ( 7.5.2a):
1 ()
2 ()
7.5.7 T I :
V 00 05.07.0 pt Nbhf + (7.5.7-1)
:
V 00 05.01
75.1pt Nbhf ++
(7.5.7-2)
10.2.9 10.2.10
10.2.11
7.5.8 T I
( 7.5.8):
V ssbyspcs aAfVV sin8.0++ (7.5.8-1)
tantan
)(8.0
cz
zAfzAfMV
sbsbysvsvyv
sp +
+=
(7.5.8-2)
V
M
Vcs (7.5.4-2)
(7.5.4-4) h0
Vsp
: fyAsSin
(fpyAp+fyAs)sin peApsin
zsv
zsb
64
@
z
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50010-2002
z=0.9h0
c c=h0
:
7.5.9 ( 7.5.9):
M sbsbyppysy zAfzAfAf ++ )(
svsvyvpbpbpy zAfzAf ++ (7.5.9-1)
c :
svyvppbpyssby AfAfAfV ++= sinsin (7.5.9-2)
V
65
@
z
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50010-2002
z=0.9h0
zsb zpb
zsv
fp :
fpy
la 9.3.1
7.5.10 9.3.1 9.3.3
10.2.2 10.2.4 10.2.7 10.2.10
7.5.11 T I
7.5.1
7.5.12 T I
:
V Nhs
A
fbhf
sv
yvt 07.01
75.1
00 +++ (7.5.12)
N V N>0.3fcA N=0.3fcA
A
:
1 =M/(Vh0)
=Hn/(2h0) 3 =3
M V Hn
2 =1.5
7.5.4 = /h0 3
=3
7.5.13 T I
:
66
@
V Nbhft 07.01
75.10 ++ (7.5.13)
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50010-2002
10.3.2
7.5.12
7.5.14 T I
:
V Nhs
Afbhf svyvt 2.0
1
75.100 ++
(7.5.14)
N V
7.5.12
(7.5.14) 0hs
Af swyv 0h
s
Af svyv 0h
s
Af svyv
0.36 0bhft
7.5.15
7.5.1 7.5.13 b
h0 1.76r 1.6r
7.5.16 :
Vx cos25.0 0bhfcc (7.5.16-1)
Vy sin25.0 0hbfcc (7.5.16-2)
Vx x h0 b
Vy y b0 h
V x =arctan(Vy/Vx)
7.5.17
:
xV2
tan1
+
uy
ux
ux
V
V
V
(7.5.17-1)
Vy2
tan1
+
ux
uy
uy
V
V
V(7.5.17-2)
67
@
x y Vux Vuy :
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50010-2002
Nhs
AfbhfV svxyvt
x
ux 07.01
75.100 +++
=
(7.5.17-3)
Nb
s
AfhbfV
svy
yvt
y
uy07.0
1
75.100
++
+
=
(7.5.17-4)
x y 7.5.12
Asvx Asvy x y
N V N>0.3fcA
N=0.3fcA A
(7.5.17-1) (7.5.17-2) Vux/Vuy=1
7.5.18 :
Vx
cos07.01
75.10
+
+Nbhft
x
(7.5.18-1)
Vy
sin07.01
75.10
+
+Nhbft
y
(7.5.18-2)
10.3.2
7.6
7.6.1 hw/b 6 T I hw/tw
6 ( 7.6.1) :
68
@
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50010-2002
hw/b( hw/tw) 4
tW
T
bh
V
8.00+
ccf25.0 7.6.1-1
hw/b( hw/tw)=6
tW
T
bh
V
8.00 +cc f2.0 7.6.1-2
4< hw/b( hw/tw)6
7.6.2 ( 7.6.1) :
69
@
tW
T
bh
V
80+
0
005.07.0
bh
Nf
p
t + 7.6.2-1
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50010-2002
tW
T
bh
V
80+
0
007.07.0
bh
Nf
p
t + 7.6.2-2
10.2.5 10.2.11 10.2.12
Np0
6.1.14 Np0>0.3fcA0 Np0=0.3fcA0
A0
N V T N>0.3fcA
N=0.3fcA A
7.6.3 :
1
)3(6
2
bhb
Wt = 7.6.3-1
b h
2 T I
tftftwt
WWWW ++= 7.6.3-2
Wtw W tf
Wtf:
1)
)3(6
2
bhb
Wtw = 7.6.3-3
2)
)(2
2
bbh
W ff
tf
= 7.6.3-4
3)
)(2
2
bbh
W ff
tf = 7.6.3-5
b h
b f bf
70
@
h f hf
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@
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GB
50010-2002
b f b+6h f bf b+6hf
3
[ )2(3
6
)2()3(
6
22
whw
wh
hh
h
t tbhtb
bhb
W
= ] 7.6.3-6
bh hh
7.6.4 :
Ts
AAfwf corstyvtt
12.135.0 + 7.6.4-1
corstyv
stly
uAf
sAf
1
= 7.6.4-2
0.6 1.7 >1.7
=1.7
ep0 h/6 1.7 (7.6.4-1)
0.05 tp
WA
N
0
0 Np0 7.6.2
(7.6.4-1) 1.7
Astl
Astl
fyv 4.2.3-1 fy
fy 4.2.3-1
Acor :Acor=bcorhcor bcor hcor
ucor :ucor=2(bcor+hcor)
: h/6
7.6.5 T I
7.6.4
:
1
71
@
TW
W
Tt
tw
w = 7.6.5-1
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50010-2002
2
TW
WT
t
tf
f
= 7.6.5-2
3
TW
WT
t
tf
f = 7.6.5-3
T
Tw
T f Tf
7.6.6 :
Ts
AAfwf corstyvtth
12.135.0 + 7.6.6
h : h=2.5tw/bh h>1.0 h=1.0
(7.6.4-2) 0.6 1.7
>1.7 =1.7
7.6.7
:
T tcorst
yvtt WA
N
s
AAfwf 07.02.135.0 1 ++ 7.6.7
N T N>0.3fcA N=0.3fcA
A
7.6.4
7.6.8
:
1
1)
V 000 25.1)05.07.0)(5.1( hs
AfNbhf svyvptt ++ 7.6.8-1
72
@
0
5.01
5.1
Tbh
VWtt
+= 7.6.8-2
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50010-2002
Asv
t : t1
t=1
2)
Ts
AcorAstfW
A
Nf yvt
p
tt
12.1)05.035.0(
0
0 ++ 7.6.8-3
7.6.4
2
1)
V000
)05.01
75.1)(5.1( h
s
AfNbhf sv
yvptt
+++
7.6.8-4
0
)1(2.01
5.1
Tbh
VWtt
++=
7.6.8-5
7.5.4
t : t1 t=1
2)
(7.6.8-3) t (7.6.8-5)
7.6.9 T I :
1 (7.6.8-1)(7.6.8-2)(7.6.8-4)
(7.6.8-5) T Wt Tw Wtw
2 7.6.5
(7.6.83) (7.6.8-2)(7.6.8-3)
(7.6.8-5) T Wt Tw Wtw
7.6.4 T Wt T
f W tf Tf Wtf
7.6.10 :
1
1)
73
@
V 00 25.1)5.1(7.0 hs
Afbhf svyvtt + 7.6.10-1
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50010-2002
2)
Ts
AAfWf corstyvttth
12.135.0 + 7.6.10-2
t (7.6.8-2) Wt hWt
h 7.6.6
2
1)
V 001
75.1)5.1( h
s
Afbhf svyvtt ++
7.6.10-3
t (7.6.8-5) Wt hWt
2)
(7.6.10-2) t (7.6.8-5)
Wt hWt
7.6.11 T I
:
1 V 0.35ftbh0 V 0.875ftbh0/( +1)
2 T 0.175ftWt T 0.175 hftWt
7.6.12 T I
7.6.13 :
1
V 00 )05.01
75.1)(5.1( h
s
AfNbhf svyvtt +++
7.6.13-1
2
74
@
T s
AAfW
A
Nf corst
yvttt
12.1)07.035.0( ++7.6.13-2
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50010-2002
7.5.12
t (7.6.8-5) 7.6.4
7.6.14 T (0.175ft+0.035N/A)Wt
7.6.15
7.6.16
10.2.5 10.2.11 10.2.12
:
7.7
7.7.1
( 7.7.1):
75
@
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50010-2002
lF
0,)15.07.0( huf
mmpcth +
7.7.1-1
(7.7.1-1) :
s
2.14.01 += 7.7.1-2
m
s
u
ha
45.0 02 += 7.7.1-3
Fl
7.7.5
h : h 800mm h=1.0 h 2000mm
h=0.9
ft
76
@
pc m
1.0 3.5N/mm
2
um : h0/2
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50010-2002
h0
1
2 s
4 s
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50010-2002
Asvu 45
Asbu 45
10.1.10 7.7.1
m 0.5h0
: (
U )
7.7.4
( 7.7.4):
lF 07.0 hbf mth 7.7.4-1
ApF sl = 7.7.4-2
2
bt
m
bbb
+= 7.7.4-3
h0
ps
()
A ( 7.7.4 ABCDEF)
bt :
bb
bb=bt+2h0
7.7.5
7.7.1
78
@
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50010-2002
7.7.3 Fl
Fl eq Fl eq G
7.8
7.8.1 :
lF ln35.1 Afclc 7.8.1-1
l
b
l A
A
= 7.8.1-2
Fl
1.2
fc
f cu 4.1.4
c
7.5.1
79
@
l
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50010-2002
Al
Aln
Ab 7.8.2 7.8.2 Ab
7.8.2
7.8.3 Acor Al ( 7.8.3)
:
lF ln)2(9.0 Aff ycorvclc + 7.8.3-1
( 7.8.3a) v :
sA
lAnlAn
cor
ss
v
222111 += 7.8.3-2
1.5
( 7.8.3b) v :
sd
A
cor
ssv
14= 7.8.3-3
80
@
cor (7.8.1-2)
Ab Acor Acor>Ab Acor=Ab
fy 4.2.3-1
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50010-2002
7.3.2
Acor
Al
v (Acor)
n1 Asl l1
n2 As2 l2
Assl
dcor
s 30 80mm
7.8.3 h
4 4 h 15d d
81
@
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50010-2002
7.9
7.9.1 :
1
2
3
4
7.9.2
GB50009
12m
7.9.3 :
1
2
:
7.9.4 :
fc max,
fcf 7.9.4-1
f
sif
yf 7.9.4-2
fc max,
(7.9.5-1) f
si i (7.9.5-2)
fcf 4.1.6 ffy 4.2.5-1
:
7.9.5
:
1
1
@
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50010-2002
f
f
cf
I
xM
0
0maxmax, =
7.9.5-1
2
min,max, sif
sif
sif = 7.9.5-2
0
00minmin,
)(f
i
ff
Esif
I
xhM = 7.9.5-3
0
00maxmax,
)(f
i
ff
Esif
I
xhM = 7.9.5-4
Mfmax Mfmin
fsi min
fsi max M
fmin M
fmax i
fE :
fE=Es/E
fc
If0 Mfmax Mfmin
x0 MfmaxM
fmin
h0i Mfmax M
fmin
i
Mfmin Mfmax (7.9.5-3) h0i x0 I
f0
h 0i x 0 If
0
7.9.6 x0 x 0
If0 If
0 :
1 T
0)()(2
000
02
=+ xhAaaxAabx
sEf
ssEf
7.9.6-1
2
@
2000
0
3
0 )()(3
xhAaaxAabxI sEf
ssEff
++= 7.9.6-2
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50010-2002
2 I T
1)x0>h f( 7.9.6)
0)()(2
))((
2000
2
002
=+
xhAaaxAahxbbxb
sEf
ssEffff
7.9.6-3
2
00
2
0
3
003
0 )()(
3
))((
3
xhAaaxAahxbbxb
I sEf
ssEfffff ++
=
7.9.6-3
2) x0 h f b f
3 x 0 If
0 x0 If0 M
fmin M
fmax
x 0 x0
Mfmin M
fmax x 0=x0 I
f0=I
f0
:1 As h0
Asi h0i
2 fE
fc f y
fE>f y
fEA
s f yA s/fc f y
fc
7.9.7 :
1 :
3
@
f t
ff6.0 7.9.7-1
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50010-2002
f 7.9.8
fft 4.1.6
2 (7.9.7-1)
f
sv :
svf yv
ff 7.9.7-2
fsv (7.9.9-1)
ffyv 4.2.5-1 f
fy
7.9.8 :
0
max
bz
V ff = 7.9.8
Vfmax
b T I
z0 x0
(7.9.6-1)(7.9.6-3)
7.9.9 :
0
0max )1.0(
zA
sbhfV
sv
tff
svf
=
7.9.9-1
minmaxmaxfff VVV = 7.9.9-2
maxmax /ff VV= 7.9.9-3
Vfmax
Vfmin
s
Asv
7.9.10 :
1
2
:
4
@
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50010-2002
7.9.11 :
1
1)
max,ccf
cf
f 7.9.11-1
2)
max,ctf t
ff 7.9.11-2
2
pf
pyf
f 7.9.11-3
3
sf
yff 7.9.11-4
fcc max ()
(7.9.12-1)(7.9.12-2)
fct max
(7.9.12-1)(7.9.12-2)
fp (7.9.12-3)
ffpy 4.2.5-2
fs (7.9.12-6)
ffy 4.2.5-1
:
7.9.12
:
1
min,cf =max,c
f 00
miny
I
M f
pc + 7.9.12-1
max,cf =min,c
f 00
maxy
I
M f
pc + 7.9.12-2
2
5
@
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50010-2002
min,max, pf
pf
pf = 7.9.12-3
p
f
pEpepf y
I
M0
0
minmin, += 7.9.12-4
p
f
pEpepf y
I
M0
0
maxmax, += 7.9.12-4
3
min,max, sf
sf
sf = 7.9.12-5
s
f
pEpesf y
IM 0
0
minmin, += 7.9.12-6
s
f
pEpesf y
I
M0
0
maxmax, += 7.9.12-4
fc,minfc max
pc
(6.1.5-1)(6.1.5-4)
Mfmax M
fmin
pE :
pE=Es/Ec
I0
y0
fp min
fp max
fp
pe
(6.1.5-2)(6.1.5-5)
6
@
y0s y0p
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50010-2002
fs min
fs max
f
s se Mp0
Mp0
:(7.9.12-1) (7.9.12-2) pc (Mfmin/I0)y0 (M
fmax/I0)y0
(7.9.12-7) (7.9.12-8) se
7.9.13 :
tp
f
tf
f 7.9.13 ftp
8.1.6 ( )
7
@
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50010-2002
8
8.1
8.1.1 3.3.4
:
1
:
pcck 0 (8.1.1-1)
2
:
pcck tkf (8.1.1-2)
:
pccq 0 (8.1.1-3)
3
max lim (8.1.1-4)
ck cq
pc
(6.1.5-1)(6.1.5-4)
ftk 4.1.3 max
8.1.2
lim 3.3.4
:
(8.1.1-1)(8.1.1-3) pc 0.9
8
@
8.1.2 T T I
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50010-2002
(mm):
+=
te
eq
s
sk
cr
dc
E
08.09.1max (8.1.2-1)
skte
tkf
65.01.1 = (8.1.2-2)
=iii
ii
eqdn
dnd
2
(8.1.2-3)
te
ps
teA
AA += (8.1.2-4)
cr 8.1.2-1
: 1
=1 =1
sk
8.1.3
Es 4.2.4
c (mm): c65 c=65te
te
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50010-2002
8.1.2-1
cr
2.1 1.7
2.4
2.7 2.2
8.1.2-2
Vi 0.7 1.0 1.0 0.8 0.6 0.8 0.5 0.4
0.8
8.1.3
:
1
1)
s
k
skA
N= (8.1.3-1)
2)
)( 0 ss
k
skhA
eN
= (8.1.3-2)
3)
s
k
skAh
M
087.0= (8.1.3-3)
4)
zA
zeN
s
k
sk
)( = (8.1.3-4)
0
2
0)1(12.087.0 he
hz f
= (8.1.3-5)
ss yee += 0 (8.1.3-6)
10
@
0
)(
bh
hbb fff
= (8.1.3-7)
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50010-2002
2
0
00 /4000
11
+=
h
l
hes
(8.1.3-8)
As :
e
e
z 0.87h0
s l0/h 14 s=1.0
ys
f
fb fh (8.1.3-7) >0.2hfh 0 =0.2hfh 0
Nk Mk
2
1)
sp
pk
skAA
NN
+
=
0 (8.1.3-9)
2)
zAA
ezNMM
sp
ppk
sk)(
)(02
+
= (8.1.3-10)
0
2
p
kp
N
MMee
+= (8.1.3-11)
Ap :
z
(8.1.3-5) e (8.1.3-11)
ep Np0
M2 6.1.7
11
@
:(8.1.3-10) (8.1.3-11) M2 Mk M2 Mk
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50010-2002
8.1.4
:
1
0A
Nkck = (8.1.4-1)
0A
Nqcq = (8.1.4-2)
2
0W
Mkck
= (8.1.4-3)
0W
Mqcq = (8.1.4-4)
3
00 A
N
W
M kkck = (8.1.4-5)
00A
N
W
M qqcq = (8.1.4-6)
Nq Mq
A0
W0
:(8.1.4-5) (8.1.4-6)
8.1.5
:
1
1) :
tp 0.85 (8.1.5-1)tkf
2) :
tp 0.95 (8.1.5-2)tkf
2
:
12
@
cp 0.6 (8.1.5-3)ckf
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50010-2002
tp cp 8.1.6
: (8.1.5-2)(8.1.5-3)
8.1.6 :
2
2
22
+
+=
yxyx
cp
tp(8.1.6-1)
0
0
I
yMkpcx += (8.1.6-2)
bI
SAV ppbpek
0
0)sin( =
(8.1.6-3)
x Mk
y Fk
Vk
pc
(6.1.5-1)(6.1.5-4)
y0
I0
Vk
S0
pe
Apb
p
:(8.1.6-1) (8.1.62) x y pc Mky0/I0
8.1.7 0.6h
Fk 8.1.7
:
13
@
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50010-2002
bh
Fky
6.0max, = (8.1.7-1)
2
rl
F
= (8.1.7-2)
bI
SVlkl
0
0= (8.1.7-3)
bI
SVrkr
0
0= (8.1.7-4)
l r Fk 0.6h
F Fk
Vlk V
rk Fk
8.1.8
ltr
pc( 8.1.8) ltr 6.1.9
14
@
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50010-2002
8.2
8.2.1
B
3.3.2
8.2.2 T T I B :
s
kq
k BMM
MB
+=
)1((8.2.2)
Mk
Mq
Bs 8.2.3
8.2.5
8.2.3 Bs :
1
15
@
f
E
ss
s
hAEB
+++
=
5.31
62.015.1
2
0(8.2.3-1)
2
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50010-2002
1)
Bs=0.85EcI0 (8.2.3-2)
2)
)1(85.0 0
crcr
cs
kkIEB
+=(8.2.3-3)
k
cr
crM
Mk = (8.2.3-4)
7.0)45.01(21.0
0.1 +
+= f
E
(8.2.3-5)
0)( WfM tkpccr += (8.2.3-6)
0
)(
bh
hbb fff
= (8.2.3-7)
8.1.2
E : E=Es/Ec
: =As/(bh0)
=(Ap+As)/(bh0)
I0 f
bf hf
kcr Mcr Mk
kcr>1.0 kcr=1.0
pc
8.2.4
: Bs 10%
8.2.4 :
mh
+=
1207.0 (8.2.4)
16
@
m
2ftk/Ec
m 8.2.4
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h (mm): h1600 h=1600
h=2r r
8.2.4 m
1 2 3 4 5
I
T
T
bf/b 2
hf/h
bf/b 2
hf/h 0.2
bf/b 2
hf/h
bf/b 2
hf/h 0.2
m 1.55 1.50 1.45 1.35 1.50 1.40 1.60.24r1/r
1 fb bf I 2 3 fb bf I
3 4
2
b
3 1 rl
8.2.5 :
1
=0 =2.0 = =1.6
=A s/(bh0) =As/(bh0)
T 6 20%
2 =2.0
8.2.6
EcI0
2.0
:1
2
17
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50010-2002
9
9.1
9.1.1 9.1.1
9.1.1 (m)
100 70
75 50
55 35
65 40
45 30
40 30
30 20
1
2
3
4 12m
9.1.2 9.1.1 :
1 () 8m
2
3
4
5
9.1.3 9.1.1
:
1
2
3
18
@
9.1.4
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9.2
9.2.1 (
) 9.2.1
9.2.1 (mm)
C20C25
C45C50 C20
C25
C45C50 C20
C25
C45C50
20 15 15 30 25 25 30 30 30
A 20 20 30 30 30 30
B 25 20 35 30 35 30
30 25 40 35 40 35
40mm 70mm
9.2.2 C20
9.2.1 5mm
15mm
9.2.1
10mm
9.2.3 9.2.1
10mm 10mm 15mm
9.2.4 40mm
9.2.5
9.3
9.3.1
:
19
@
dffl
t
y
a = (9.3.1-1)
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df
fl
t
py
a = (9.3.1-2)
la
fy fpy 4.2.3-1 4.2.3-2
ft 4.1.4
C40 C40
d
9.3.1
9.3.1
0.16 0.14 0.19 0.13 0.16 0.17
HPB235 180 3d
HRB335 HRB400 RRB400
:
1 HRB335 HRB400 RRB400 25mm
1.1
2 HRB335 HRB400 RRB400
1.25
3 ()
1.1
4 HRB335 HRB400 RRB400
3
0.85
20
@
6
0.25ltr ltr 6.1.9
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(9.3.1-1) (9.3.1-2) 0.7
250mm
9.3.2 HRB335 HRB400 RRB400
(9.3.1-1) 0.7
9.3.2
3
0.25 5
5
9.3.3
9.3.1 0.7
9.3.4
10mm
9.4
9.4.1 :
9.4.2 ()
d>28mm d>32mm
9.4.3
21
@
1.3
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50010-2002
( 9.4.3)
:
25% 50% 50%
:
ll= la (9.4.3)
ll
la 9.3.1
9.4.3
300mm
9.4.3
( ) 25 50 1001.2 1.4 1.6
9.4.4
9.4.3 0.7 200mm
22
@
9.4.5
0.25 5
100mm 10
200mm d>25mm 100mm
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9.4.6
35d(d )
50%
9.4.7
50%
9.4.8
25mm
9.4.9 35d(d
) 500mm
50%
:1
2
3
9.4.10
()
:
1
2 25%
45d(d )
3 4.2.5
9.5
9.5.1 9.5.1
23
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9.5.1
( )
0.6
0.2
0.2 45ft/fv
1 HRB400 RRB400
0.1 C60 0.1
2
3
( b)f fb h
4
9.5.2
0.15%
9.5.3 :
Mu Mcr (9.5.3)
Mu (7.2.1-1) (7.2.2-2)
(7.2.5) MMu Mcr (8.2.3-6)
9.6
9.6.1
1.4
1.7
:
9.6.2
1.5
: 15mm
20mm 25mm
24
@
9.6.3
:
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1 150mm 4
4 120mm
2 10d(d) 3 5
3 100mm
9.6.4 100mm
2
9.6.5
9.6.6
9.6.7
9.6.8 :
1 50mm
30mm
2
1.5
50mm 40mm
3
10 15mm
4 12m
5
9.6.9 :
1 7.8
0.5%
25
@
2 l 3e(e ) 1.2h(h
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50010-2002
) 2e
0.5%( 9.6.9)
9.6.10 :
1
2
0.2h(h )
3 :
e 0.1h
ASV 0.3y
p
f
N(9.6-10-1)
0.1h e 0.2h
ASV 0.15
y
p
f
N(9.6-10-2)
e 0.2h
Np
6 1.2
e
fy 4.2.3-1
26
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9.6.11 ( 9.6.11)
9.6.12
9.6.13
4m
9.6.14
9.6.15
9.6.9 9.6.10
27
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10
10.1
10.1.1 10.1.1
10.1.1 (mm)
60
60
70
80
80
700mm 40
700mm 50
500mm 60
500mm 80
150
10.1.2 :
1
2 :
1) 2.0
2) 2.0 3.0
3) 3.0
10.1.3
10.1.4 h 150mm 200mm
h>150mm 1.5h 250mm
10.1.5 5d d
28
@
10.1.6 200mm
8mm
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l0 ( 10.1.6)
10.1.7
8mm 200mm
:
1
2
29
@
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15% 0.15% 250mm
6mm
200mm
:
10.1.9 150 200mm
0.1%
10.1.10 :
1 150mm
2 45
1.5h0(
10.1.10a) 6mm h0/3
30
@
3 30 45
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50010-2002
( 10.1.10b)
(1/2 2/3)h 12mm
3
10.1.11 h>2m 1m
12mm 200mm
10.1.12
10.2
10.2.1 h 300mm 10mm
h
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d
las 0.25
10
5
: C25 1.5h
V>0.7ftbh0 las 15d
10.2.3
:
1 V 0.7ftbh0
20d 1.2la
2 V>0.7ftbh0
h0 20d
1.2la+h0
3
1.3h0 20d
1.2la+1.7h0
10.2.4
12d 10.2.8
10.2.7
10.2.5 tl :
tly
t
f
f
Vb
T
6.0 (10.2.5)
T/(Vb)>2.0 T/(Vb)=2.0
tl : tl=bh
Astl
b 7.6.1
Astl
32
@
200mm
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50010-2002
9.5.1
b bh
10.2.6
0.2l0
l0
10.2.7
45 60
20d 10d
d
10.2.8
( 10.2.8)
h0/2
()
10.2.10 V>0.7ftbh0+0.05Np0
33
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10.2.9 h>300mm
h=150 300mm
h0.7ftbh0+0.05Np0
sv( sv=Asv/(bs)) 0.24ft/fyv
34
@
2
15d(d ) 400mm
5 18mm 10d
400mm 3 400mm
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50010-2002
4
3 9.4.5
10.2.10 (mm)
h V 0.7ftbh0+0.05Np0 V 0.7ftbh0+0.05Np0
150 h 300 150 200
300 h 500 200 300
500 h 800 250 350
h 800 300 400
10.2.11 h>800mm 8mm h
800mm 6mm
0.25
10.2.12 sv( sv=Asv/(bs)) 0.28ft/fyv
10.2.10
135 10d(d
)
0.75b
b 7.6.1
b bh
10.2.13 (
) s
=2h1+3b( 10.2.13)
10.2.7
35
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50010-2002
:
ASVsinyvf
F(10.2.13)
Asv Asv
F
10.2.14 ( 10.2.14)
35% :
36
@
1 :
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50010-2002
2cos2
slysl AfN = (10.2.14-1)
2 35%
2cos7.02
sys AfN = (10.2.14-2)
As
Asl
s s=h tan(3 /8)
10.2.15 4m 8mm
4 6m 10mm 6m 12mm
10.2.16 hw 450mm
( )
bhw 0.1% 200mm hw
7.5.1
10.2.17
8 14mm 100 150mm
10.2.16
10.3
10.3.1 :
1 12mm 5%
8 6
2 h 600mm 10
16mm
3 50mm
10.2.1
4
300mm
10.3.2 :
37
@
1
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50010-2002
9.3.1 135
5
2 400mm 15d d
3 d/4 6mm d
4 3% 8mm
10 200mm
135 10
5 400mm 3
400mm 4
6 9.4.5
10.3.3
80mm dcor/5(dcor
) 40mm 10.3.2
10.3.4 I 120mm 100mm
2 3 8mm
10.3.5 I
I
10.4
10.4.1
la 5d d
0.4la 15d( 10.4.1)
la 9.3.1
38
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50010-2002
10.4.2
10.4.2 (
10.4.2) 10.2.3
:
1
10.2.2 V>0.7ftbh0
2
( 10.4.2a) 9.3.1
la 90 (
10.4.2b)
10.4.1 90 ( 10.4.2c)
3
0.7la
39
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50010-2002
10.4.3
9.3.1
la
0.5la 12d 80mm C20
12d d
10.4.4
:
40
@
1 ( 10.4.4a)
1.5la
65%
8d
80mm
C20
1.2%
20d
d
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50010-2002
2 ( 10.4.4b)
1.7la 1.2%
20d d
12d d
10.4.5 As :
Asy
bcc
f
hbf 035.0 (10.4.5)
bb
h0
d
25mm 6d d>25mm 8d
10.4.6 10.3.2
250mm
9.4.5
41
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10.5
10.5.1 ()() 4
C20
10.5.2 140mm
1/25 1/20
10.5.3
7.3 7.4
10.5.4 10.5.6
7.8
6 1/10
10.5.4 :
V 0.25 (10.5.4)bhfcc
V
c 7.5.1
b T I ()
h ()
10.5.5 :
V 00 13.05.0
5.0
1h
s
Af
A
ANbhf
v
sh
yv
w
t +
+
(10.5.5)
N V N>0.2fcbh N=0.2fcbh
A 10.5.3
Aw T I Aw=A
Ash
sv
42
@
: =M/(Vh0) 2.2
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50010-2002
=2.2 M V
h0/2 h0/2
V (10.5.5)
10.5.10 10.5.12 10.5.6 :
V 00 13.05.05.0
1h
s
Af
A
ANbhf
v
sh
yv
w
t +
(10.5.6)
fyv=v
sh
s
Ah0 fyv=
v
sh
s
Ah0
N V
10.5.5
10.5.7 7.2
7.5.1 ln/h>2.5
:
V 007.0 hs
Afbhf svyvt + (10.5.7)
: ln/h 2.5
10.5.8
4 12mm
2 16mm 6mm
250mm
2 12mm
9.3.1
43
@
10.5.9 sh( sh=v
sh
bs
Asv
)
sv( sv= h
sv
bs
A
sh
)
0.2%
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10.5.10 8mm
300mm
10.5.11 160mm
160mm
6mm 600mm
10.5.12 10d d
15d
10.5.13
10.5.13 1.2la
500mm
1.2la
10.5.14 6mm
150mm
150mm
10.5.15
10.6
10.6.1
7 8
10.6.2 10.6.13
44
@
10.6.4 10.6.5
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h1/h
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50010-2002
V=V1G+V2G+V2Q (10.6.4-2)
V1G
V2G
V1Q
V2Q
Vcs
Vp=0
10.6.5 10.2.10 10.2.11 10.6.14
:
V 00 85.02.1 hs
Afbhf svyvt + (10.6.5-1)
ft
10.6.15
:
0bh
V0.4 (N/mm2) (10.6.5-2)
10.6.6
ftk
:
01
1
W
M kck = (10.6.6-1)
0
2
01
1
W
M
W
MkGk
ck += (10.6.6-2)
46
@
M1Gk
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50010-2002
M1k
M1k=M1Gk+M1Qk M1Qk
M2k M2k=M2Gk+M2Qk M2Gk
M2Qk
W01
W0
10.6.7 8.1.5
8.1.6
10.6.8
:
sk 0.9fy (10.6.8-1)
sk= s1k+ s2k (10.6.8-2)
M1Gk s1k:
01
1
187.0 hA
M
s
Gk
ks = (10.6.8-3)
h01
M2k s2k
:
0
21
2 87.0
15.0
hA
Mh
h
s
k
ks
+
= (10.6.8-4)
M1Gk
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50010-2002
wmax
:
+
+=
1
21
max 8.09.1)(
2.2
te
eq
s
ksksd
cE
(10.6.9-1)
kstekste
tkf
211
165.01.1
+
= (10.6.9-2)
deq 8.1.2
te1 te
8.1.2
ftk1 4.1.3
10.6.10 8.2.1
:
2
1
1
2 )1(
s
kqGk
s
s
k B
MMMB
B
MB
++
=
(10.6.10-1)
Mk=M1Gk+M2k (10.6.10-2)
Mq=M1Gk+M2Gk+qM2Qk (10.6.10-3)
8.2.5
Mk
Mq
Bsl 10.6.11
Bs2 10.6.11
q
10.6.11
:
1
1)Bs1 (8.2.3-1)
2):
48
@
f
E
ss
s
h
h
hAEB
+++
=
5.31
5.46.07.0
1
2
0
2 (10.6.11-1)
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E : E=Es/Ec2
2
1)Bs1 (8.2.3-2)
2):Bs2=0.7Ec1I0 (10.6.11-2)
Ecl
I0
10.6.12
Bs2 (8.2.3-1) E=Es/Ecl
10.6.13
1.75
10.6.14 :
1
10d(d )
2 6mm
3 100mm
C20
10.6.15 4mm
C20
10.7
10.7.1 l0/h
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10.7.3 :
M fyAsz (10.7.3-1)
z= d(h0-0.5x) (10.7.3-2)
hl
d004.080.0 += (10.7.3-3)
l0 h z=0.6l0.
x (7.2.1-2) x2 as
10.7.4 :
hw/b 4
V 00 )/10(60
1bhfhl cc+ (10.7.4-1)
hw/b 6
V 00 )/7(60
1bhfhl cc+ (10.7.4-2)
4 hw/b 6
V
l0 l0
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75%)
:
V 00
0
0
06
)/5(
3
)2/(
1
75.1h
s
Af
hlh
s
Af
hlbhf
v
sh
yh
h
sv
yvt
+
+
+
(10.7.5-2)
: l0/h 2.0 =0.25 2.0 l0/h 5.0 =/h0
(0.92l0/h-1.58)
(0.42l0/h-0.58)
l0/h l0/h
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52
@
10.7.10
( 10.7.9-1) 9.3.1 la
1.1
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la
10.7.11 8mm
200mm
600mm 0.4h 0.4h ( 10.7.9-1 10.7.9-2 )
10.7.12
200mm
3/4
s
( 10.7.12a)
h1 hb/2
s=bb+hb (10.7.12-1)
h1>hb/2
s-=bb+2h1 (10.7.12-2)
bb
hb
h1
53
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Asv (10.2.13)
fyv 0.8
10.7.13 ( =bh
As) sh(
sh=v
sh
bsA sv ) sv( sv=
h
sv
bsA sh
) 10.7.13
10.7.13 ( )
HPB235 0.25 0.25 0.20
HRB335 HRB400 RRB400 0.20 0.20 0.15
1/4 l0/ h 1.5
0.05
10.7.14
10.8
10.8.1 ( h0 )( 10.8.1):
1
54
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50010-2002
Fvk
0
0
5.0
5.01
h
bhf
F
F tk
vk
hk
+
(10.8.1)
Fvk
Fhk
: 0.65 0.80
20mm
20mm =0
b
h0 :h0=h1- s+c tan >45
=45 c
2 h1 h/3 200mm
3 Fvk 0.75fc
10.8.2
:
55
@
Asy
h
y
v
f
F
hf
aF
2.185.0 0 + (10.8.2)
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Aszf
M
f
N
f
V
ybrybyvr 3.18.0++ (10.9.1-1)
Aszf
M
f
N
ybryb 4.08.0+ (10.9.1-2)
2
:
Aszf
NzM
f
NV
ybryvr 3.1
4.03.0 +
(10.9.1-3)
Aszf
NzM
ybr4.0
4.0 (10.9.1-4)
M0.7 v=0.7
d
tb 25.06.0 += (10.9.1-6)
b=1.0
fy 4.2.3-1 300N/mm2
V
N 0.5fcA A
57
@
M
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r : 1.0 0.9
0.85
v
d b
t
z
10.9.2 ( 10.9.2)
Asb :
Asb svy
AfV 25.14.1 (10.9.2)
v 10.9.1 As=0
: 15 45
10.9.3 HPB235 HRB335 HRB400
10.9.4 4 4 8mm
25mm 2
10.9.5 Q235 T
20mm 20mm
6mm 0.5d(HPB235 )
0.6d(HRB335 HRB400 ) d
58
@
10.9.6 0.6
b/8 b ( 10.9.1) 2d 20mm
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b b1 c c1
3d 45mm( 10.9.1)
bb1 300mm b1 6d 70mm
c1 6d 70mm b c 3d 45mm( 10.9.1)10.9.7 9.3.1
HPB235 9.3.1
15d d
10.9.8 HPB235
30d
2 50N/mm2
4 3
10.10
10.10.1
10.10.2
10.10.3
10.10.4
1.3 1.5 ()
59
@
10.10.5
10.4.1
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10.10.6
C30
80mm C20
10.10.7 20m
C20
30mm
20m
60
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11
11.1
11.1.1 1 10
GB50011
11.1.2 :
1 6 ( )
2 6 7 7
11.1.3 11.1.3
11.1.3 (m)
6 7 8 9
60 55 45 25
130 120 100 50
140 120 100 60
120 100 80
150 130 100 70
180 150 120 80
1 ()
2
3
4 9
5
11.1.4
11.1.4
61
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11.1.4
6 7 8 9
(m) 30 30 30 30 30 30 25
(m) 60 60 60 60 60 60 50
(m) 80 80 80 80 80 80 60
1
GB50011
2 I 6
3
50
4
11.1.5
1/8 15m
1/8
15m
11.1.6
RE RE 11.1.6
RE=1.0
62
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11.1.6
RE 0.75 0.8 0.85 0.85 0.85 1.0
1. 0.15 RE=0.75
2. RE 1.0
11.1.7
9.3 9.4 :
1 laE :
laE=1.15la (11.1.7-1)
laE=1.05la (11.1.7-2)
laE=la (11.1.7-3)
la 9.3.1
2 llE :llE= laE (11.1.7-4)
9.4.3
3 :
4
50%
11.1.8 135 10
0.25 5 100mm
11.2
11.2.1 :
63
@
1 9 C60 8
C70
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2
C30 C20
11.2.2 HRB400 HRB335
HRB335 HRB400 HPB235
11.2.3
:
1 1.25
2 1.3
11.3
11.3.1 7.2
RE
:
x 0.25h0 (11.3.1-1)
x 0.35h0 (11.3.1-2)
2.5%
11.3.2 Vb :
1 9
Gb
n
r
bua
l
bua
b Vl
MMV +
+=
)(1.1 (11.3.2-1)
(11.3.2-2) Vb
2
Gb
n
r
b
l
b
b Vl
MMV +
+=
(3.1 (11.3.2-2)
64
@
Gb
n
r
b
l
b
b Vl
MM
V +
+
=
(
2.1 (11.3.2-3)
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Gb
n
r
b
l
b
b Vl
MMV +
+=
(1.1 (11.3.2-4)
lbuaMr
buaM
l
bMr
bM
VGb
ln
(11.3.2-1) lbuaM rbuaM
Mbua 7.2
(11.3.2-2)(11.3.2-4) lbM r
bM
11.3.3 l0/h>2.5
:
Vb )20.0(1
0bhfccRE
(11.3.3)
c : C50 c=1.0
C80 c=0.8
11.3.4 T I :
1
Vb
+ 00 25.142.0
1h
s
Afbhf svyvt
RE(11.3.4-1)
2 (
75%)
65
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Vb
+
+00
1
05.11h
s
Afbhf svyvt
RE (11.3.4-2)
= /h0
3 =3
11.3.5 :
1 200mm
2 4
3 4
11.3.6 :
1 11.3.6-1
11.3.6-1 ( )
0.4 80ft / fy 0.3 65ft /fy
0.3 65ft / fy 0.25 55ft / fy
0.25 55ft / fy 0.2 45ft / fy
2
0.5 0.3
3 11.3.6-2
2% 2mm
11.3.6-2
(mm) (mm)
(mm)
2h 500
6 1 4
100 10
8
1 4 100
8
8
1 4 150 8
1.5h 500
8
1 4 150 6
h
66
@
11.3.7
14mm
1/4 12mm
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11.3.8 : 200mm 20
250mm 20
300mm
11.3.9 50mm 2 sv :
sv 0.30yv
t
f
f(11.3.9-1)
sv 0.28yv
t
f
f(11.3.9-2)
sv 0.26yv
t
f
f(11.3.9-2)
11.4
11.4.1 7
RE
11.4.2
:
1
1)9
= buac MM 2.1 (11.4.2-1)(11.4.2-2) Mc
2)
cM =1.4 (11.4.2-2) bM
cM =1.2 (11.4.2-3) bM
cM =1.1 (11.4.2-4) bM
67
@
Mc
(11.4.2-1)(11.4.24)
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Mbua
Mbua 11.3.2
Mb
1.4 1.2 1.1
0.15
2
11.4.3
1.5 1.25 1.15
:
11.4.4 Vc :
1 9
n
b
cua
t
cua
cH
MMV
)(2.1
+= (11.4.4-1)
(11.4.4-2) Vc
2
Vc=1.4n
b
c
t
c
H
MM )( +(11.4.4-2)
Vc=1.2n
b
c
t
c
H
MM )( +(11.4.4-3)
68
@
Vc=1.1n
b
c
t
c
H
MM )( +(11.4.4-4)
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tcuaMb
cuaM
t
cM
b
cM Hn
(11.4.4-1) tcuaM b
cuaM
tcuaM 11.4.1 b
cuaM
N
(11.4.4-2)(11.4.4-4) tcM
bcM
bcMb
cM 11.4.2 11.4.3
11.4.5 10
20% 10
2%
11.4.6
1.5 1.2
11.4.7 11.4.2
11.4.4 1.1
11.4.8 :
>2
Vc )2.0(1
0bhfccRE
(11.4.8-1)
2
Vc )15.0(1
0bhfccRE
(11.4.8-2)
11.4.9
:
69
@
Vc
++
+
Nh
s
Afbhf svyvt
RE
056.0
1
05.1100
(11.4.9)
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=M/(Vh0) M
V M h0
=Hn/(2h0)
Hn 3.0 =3.0N N>0.3fcA
N=0.3fcA
11.4.10
:
Vc
+
+Nh
s
Afbhf svyvt
RE
2.01
05.1100
(11.4.10)
fyvs
Asv h0 fyvs
Asv h0 fyvs
Asv h0
0.36ftbh0
N
11.4.11 :
1 300mm 350mm
2 2
3 3
11.4.12 :
1 11.4.12-1
0.2
0.1
11.4.12-1 ( )
1.0 0.8 0.7 0.6
1.2 1.0 0.9 0.8
HRB400
0.1 C60 0.1
2
11.4.12-2
70
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11.4.12-2
(mm)
(mm)
6 100 10
8 100 8
8 150( 100) 8
8 150( 100) 6( 8)
1/3 500mm
3 2
100mm
4 10mm 200mm
150mm
400mm 6mm 2
8mm
11.4.13 5%
400mm 200mm
2 1.2%
11.4.14 ()
1/6 500mm
11.4.15 : 200mm
250mm 20 300mm
11.4.16 N/(fcA)
11.4.16
11.4.16
0.7 0.8 0.9
0.75 0.85 0.95
0.6 0.7
71
@
1 N (fcA) N A fc
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2 C65~C70 0.05
C75~C80 0.10
3 2 0.05 1.5
4 100mm 200mm 12mm 100mm 200mm
12mm 80mm 200mm
10mm 0.10 v
11.4.17
5
0.8 0.05 4
0.15 v 0.10
6 1.05
11.4.17 :
1 :
v
yv
c
vf
f (11.4.17)
v 7.8.3
fc C35 C35
fyv
v 11.4.17
11.4.17 v
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.05
0.10 0.11 0.13 0.15 0.17 0.20 0.23
0.08 0.09 0.11 0.13 0.15 0.18 0.21
0.08 0.09 0.11 0.13 0.15 0.17 0.19 0.22 0.24
0.06 0.07 0.09 0.11 0.13 0.15 0.17 0.20 0.22
0.06 0.07 0.09 0.11 0.13 0.15 0.17 0.20 0.22
0.05 0.06 0.07 0.09 0.11 0.13 0.15 0.18 0.20
72
@
1
2 0.8
3
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0.8 0.6 0.4 0.4
4 C60
0.6 0.02
0.6 0.03
2 11.4.17
0.02 1.5%
3 2
1.2% 9 1.5%
11.4.18
10d
15d d
11.5
11.5.1
11.4 9
10 11.1 11.2
11.5.2 :
1
1) 500mm
2) 300mm
3) 500mm
4)
5) 30 mm0
2 100mm 11.5.2
11.5.2 (mm)
73
@
10 8
10 8 8
8(10) 8 6
10
10 10 8
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11.5.3 l
(:l 2h :l 2b)
:
1 h
h/2 300mm
2 e0 h/6 h/4
: 1.2% 1.0%
0.8%
11.5.4
10
:
1
