항만구조물설계 사례모음.pdf

20071203 PTRL,KoreaMaritimeUniversityPTRL,KoreaMaritimeUniversity 1

JoongWooLee,Professor

DivisionofCivilandEnvironmentalEngineeringKoreaMaritimeUniversity

Breakwater

Port&HarborEngineering


DesignExampleofHarborStructures

1.1

m = 0.02 ( = 1 : 50 ) 4) L 0 = 189 m ( = 1.56*T^2 ) T 1/3 = 11 sec H 1/3 = 2.59 m

3)

ds = DL.(-) 3.00 m 2) App. H. H. W DL.(+) 0.348 H. W. O. S. T DL.(+) 0.251

1)

cot 1.5, cot 0.67 q q = =

1) : H.W.O.S.T + 1.0H 1/3 C.L = H.W.O.S.T + 1.0H 1/3 ( 0.6H 1/3 )

= 0.251 + 1.0 x 2.59 = 2.84m

DL.(+) 3.50m

- (, 1999), p.701

1.2

(1~2)H 1/3



1.2

)

= 1 :1.5 (ds) : 0.251 + 3.00 = 3.251

ds/L 0 = 3.251 / 189 = 0.017 H 1/3 /H 0 ' = 1.271 (S.P.M II, Table C-1 )

H 0 ' = 2.59 / 1.271 = 2.04m (6.69ft) H 0 '/gT 2 = 2.04 / 9.8x11 = 0.0017

ds/H 0 ' = 3.251 / 2.04 = 1.594 < 3

- , p.105 4-29, 30 R/H 0 ' = 3.50

(cot) 1.5 (K) 1.206 (r) 0.51

R = R/H 0 ' x H 0 ' x K x r = 3.50 x 2.04 x 1.206 x 0.51 = 4.39m

2) - , p.113

R/Ho =3.20

2.00 0.80

R/Ho =4.10 3.91

1.594

1.271 0.017

=> H/Ho' => ds/Lo

S.P.M Vol,II, Appendix Table C-1

(2.0-0.8): (2.0-1.594) = (4.1-3.2) : x

1.2x =0.406(0.9) x=0.3045

3.2+x=3.5045



4.10

Ho'/gT= 0.0017

cot = 1.5



3.20

Ho'/gT= 0.0017

cot = 1.5



0.67

1.166 1.206

(k)

1.206 H=4.0~12.0' (1.22~3.65m)

1.166 H=1.5~4.5' (045~1.37m)

cot 1.5, cot 0.67 q q = =



DL.(+) 3.50 m .

0.2 < 0.50 ( ) )

c = 0.51 - 0.11B/h = 0.375 (Seeling,1980) Kt 0 = c(1-F b /R) = 0.098

(Hs)t = Kt 0 x Hs = 0.098 x 2.04 = 0.2m

- , p.114 4-36~37

B = 8.00m h = 6.50m

F b = 3.5-HWOST=3.249 m R = 4.39m

B/h =8.00 / 6.50 = 1.231 F b /R =3.249 / 4.39 =0.74

)

S.P.M Vol,II, p.7-62~ 7-67

0.5m 0.5m , , 1.0m 1.0m : :



.

1) H 0 ' /gT 2 = 2.04 / 9.8x11 = 0.0017

m = 0.02 H b /H 0 ' = 1.40 ( S.P.M II, p.7-7 Figure 7-3)

H b = 1.40 x 2.04 = 2.86m H b /gT 2 = 2.86 / 9.8x11 = 0.0024

d b /H b ) max = 1.50 ( S.P.M II, p.7-6 Figure 7-2) d b /H b ) min = 1.22

d b ) max = 1.50 x 2.86 = 4.29m > d=(-)3.00m d b ) min = 1.22 x 2.86 = 3.5m > d=(-)3.00m

(d) 3.18 ~ 4.26m . -->

2 . 3 0

x

2 . 5 9



Hb/H 0 '

Ho'/gT= 0.0017

1.40

m=0.02



1.50

m=0.02

Hb/gT= 0.0024

1.224



. 2)



.

1) (Mp)

(Mt) : 85.029 4.133 20.573 (Wt)

79.040 4.000 8.00x1/2 19.760 8.00x1.90x1.30 1.114 6.83 6.50+0.50x2/3 0.163 0.50x0.50x1/2x1.30 ()

4.875 7.500 7.00+1.00x1/2 0.650 1.00x0.50x1.30 ()

Wi*Xi (t.m/) Xi(m) Wi(ton/)

2)

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DesignofBreakwaters

1) (sliding)

:

: : (W1:, W2: BCD) : BC : ,

P: Fs: , F0 =1.2

2) (overturning moment)

x : W y : P F0 : , F0 =1.2

3)

b : d : w : ( t/m 3 )qa : ( t/m 3 )

-

s

WF

P m

( ) { } ( )

1 2

1 2

cos sin

sin cos sW W P

FW W P

m q q q q

+ -

+ +W q m m =0.6~0.8

0

W xF

P y

' aW

w d qb d

+ +



.

3)



.

4)

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DesignofBreakwaters

26

1e W

pb b

= -

1

61

e Wp

b b = +

3

23

2

Wp

be

= -

'Mt Mp

xWt -

=

'2b

e x = -



.

5)



.

5)

O.K 5.91 O.K 3.03

O.K 2.382 O.K 11.069 O.K 1.928



.

5)



DL.(+) 3.5

DL.(+) 1.4 DL.(+) 1.1

W1 P

1.5

1

W2

DL.(-) 3.0

8.0 3.5

DL.(+) 1.10

DL.(+) 3.50

W

CONC.

P H

8.0



: . (1999), p.103 1.3 to 3.0 0.36 curved risers " 1.3 to 3.0 0.75 vertical risers N.A (stepped slopes) 1.3 to 3.0 0.33 (uniform) 1 (gobi blocks) 1.3 to 3.0 0.5 (uniform) 1 " 1.3 to 3.0 0.45 (random) 2 (Tribar)

1.3 to 3.0 0.51 (uniform) 2 " 1.3 to 3.0 0.45 (random) 2 (Tetrapod) 1.3 to 3.0 0.51 (random) 2 (Quardipod)

3 0.55 (uniform) 1 " 2 0.73 (uniform) 1 "

1.5 0.62 (uniform) 1 " 1.3 to 3.0 0.48 (random) 2 (modified cube) 1.3 to 3.0 0.45 (random) 2 (Dolos)

(cot ) r (4-6)



: . (1999), p.146 15.0 12.0 1 (Tribar) 22.0 *11.0 1 (Toskane) 9.5 *8.0 2 (Hexapod) 7.5 *6.5 2

(Modified Cube)

2.0~ 3.0 31.8 15.8 2 (Dolos)

1.5 ~ 3.0 10.0 *9.0 2 (Tribar) (Quadripod)

10.3 1.5 ~ 3.0 10.3 8.3 2 (Tetrapod)

*8.5 ~ 24.0

7.0 ~ 20.0 2

7.0 5.8 2 " 4.5 *2.2 > 3 "

1.5 ~ 3.0 4.0 2.0 2 *3.2 *1.6 > 3 "

1.5 ~ 3.0 2.4 *1.2 2

n

(5-3) Kd



.

: 3

(5% )

(2%) Kd 50% .

1:2 Dolos .

.

1:1.5 1:3 .

Kd Kd

n

: * Kd

.

1:1.5 1.5 .



25.6 58.88 64.0 20.0 46.00 50.0 16.0 36.80 40.0 12.5 28.75 32.0 10.0 23.00 25.0 8.0 18.40 20.0 6.3 14.49 16.0 5.0 11.50 12.5 4.0 9.20 10.0 3.2 7.36 8.0 2.5 5.75 6.3 2.0 4.60 5.0 1.6 3.68 4.0 1.3 2.88 3.2 0.8 1.84 2.0 0.4 0.92 1.0 0.2 0.46 0.5

(m^3) (ton) (ton )

T.T.P



1.490

m=0.02

Hb/gT= 0.0019

1.110

d b /H b)max & d b /H b)min

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항만구조물설계 사례모음.pdf