regulator types

7/28/2019 regulator types

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ing to location

d Regulator

mediate Regulator

pe Regulatorersion Regulator

ing to Mater ial (Type of Construction)

onry Arch Regulator

ed Type Regulator (masonry + RC)Regulator

f regulators

ays be located at straight reaches (position a)


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ted within curves in waterways (either silting or scouring is liable to occur causing destruction of the re

)

; location should be chosen 50-200m DS the point of diversion c

ages of Regulators to weirs

or may be fully opened at flood time giving enough water way area to avoid excess heading

S & DS water levels are controlled

ze silting at US

neral Layout Showing Types of Regulators According to Locat

fi le through regulator vents


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er Slopes of Waterways in Egypt:

rth Egypt: 10 cm/kmuth Egypt: 12 cm/km

Fayum Province: ~ 2.0 m/ km

dth of Regulator Vents varies from 5 to 12 meters


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through Regulator Vents

egulator

g to size)

Span (width) of

Regulator Vents (m)

Water Velocity

through Regulator

Vent (m/sec)

ll 1-2 1.0 m/sec

rate 2


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es of Design

ydraulic Designo get the area of water way

Discharge is considered for fully opened

RegulatorDetermination of heading up

Check the velocity through regulator vents


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oor design

To determine the floor lengthTo cover the floor length by regulator floor

To check the percolation lengthTo determine the floor thickness

To make adequate precautions againstundesired percolation

uctural DesignTo determine the dimensions and check the stability of the structural elements which are: Piers;

butments; wing walls Roadway (bridge); gates Cranes and lifting devices

c design of regulators

ctional area =


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wing conditions (l imitations) should be considered

1 m/sec < velocity Vthrough vent < 2.0 m/secCarrying hydraulic design assuming regulator vents are fully opened

Heading Up is always < 10 cm

b.rg / Bcanal : from 0.6 to 1.0

rea of vents Avents; assume Vvent = (2-3) Vcanal

Range of velocity values through

regulator vents


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and S = 2 ; 2.5 ; 3.0 ; 3.5 ; 4.0 m

the value of velocity through regulator to be within the safe limits; Vactual

ading-up caused by the contraction due to regulator vents; hL

=

e coefficient due to contraction & has the values

S < 2.0 m

2 S 4.0 M

S > 4.0 m

s; tp

For pl. concrete piers


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For RC piers

of F low through Diversion Canals


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locity at US canal

ss sectional area at US of regulator


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gulator vents

on angle from US flow direction

te regulator: = 0; cos = 1

ator, =90, cos = 0

ow through Regulators

bove, below or between gates


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e lined with cast iron except emergency grooves

mensions = 0.2 * 0.2m or 0.4 * 0.4m


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f Regulator Piers


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Br idge


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f the abutment

se (dur ing repair of the regulator)


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nts about o

acting forces should lie within the middle third of width at any section

resses are allowed in pl. concrete abutments

of regulator f loor

e enough percolation length

e enough scour length

tribute the wt. of piers and reactions over the under soil


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ulator F loor

oor is treated as a Continuous inverted slab under soil reaction


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gn at working time


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er type:

2 operating wheels for each gate using worn gear

y Henien Type

n operating wheel and a system of gears. One wheel serves more than one gate (up to 3 gates)

gates

ental gatesgatesgates

vices

pended by chains

ed or lowered by: a winch or a gantry

tted to pier: own wt. of winch and crane


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own wt. of gate

friction forces

transmitted dynamic forces

15


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n by Timber Logs

tes

verts & Very small Regulators


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Henein Type gates

0 m

o 3 gates with one common winch


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Double Leaf Gates

teel Plate Gates

S 1.0 m tplate = 6 mm thick


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upporter by horizontal ribs S 8.0 m

e consists of:

horizontal ribsend vertical post

hard wood plankkin plate (as shown in the figure)

S = (1220) m

Supporting girders are d

truss


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gement below Gates


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f r ibs in a steel gate


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de of: I-beamchannel sectionT-section

ween ribs: 40 120 cm


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ross the diagonal

dulus

Gates


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es


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tor , is constructed across a branch canal according to the following data:

Main canal branch canal

(14.10) (13.60)

(13.30) (12.90)


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els (10.60) (11.00)

charge in main canal and branch canal = 50 & 25 m3/ s

dth for main canal and branch canal = 16 & 14 m

both canals = 1:1

ge = 8 m

o :

aulic design of the regulator .

floor of the regulator using lane theory ( C L = 10 )

alculate the case of loading to check the stability of the pier in the transverse direction (DL = 3 t/g

gate thickness of the regulator

LUTION

sign on branch canal (bc) section

c

.6 + (2.6)2 * 1 = 43.16 m2

assume Vr = (2-3) VC = 1.2 m/s > 1

2 = 20.83 = n * S * 2.6


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2 that S = 4 m

8*2.6) = 2 m/s > 1.2 > 1 m/s safe

= 4/4 = 1 ( minimum tp = 1m )

n-1) tp = 2 * 4 + 1 * 1 = .6 (14) < 9 < 14 safe

heading up on us canal cross section

egulator

* 3.5 + (3.5)2 * 1 = 68.25 m2

0 / 68.25 = .73 m/s

C = .92

2/(2*9.8*(.92)2) { (68.25)*.5/(2*4*2.6) }2

m is safe design

gn the floor of the regulator using lane theory ( C L = 10 )


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013.60 = .50

012.90 = .40

011.00 = 3.10


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m

= X /3+ 1+1 X = 21 m

se of loading to check the stability of the pier in the

irection (Mx)


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Mx/Ix) * y < 40 Kg/cm2

hw/3)* Le + 4 * 5 * (tp/4)

0 m & tp = 1.25 m

1 + .5 = 3.6 m

1.25* 3.6 + 4*5 +4* 8 = 151 t

2 * 10 * 3.1/3 + 4 * 5 * (1.25)/4 = 55.9

5)3/12 = 1.62 & y = 1.25/2 = .625

+ (55.9/1.62) * .625 = + 9.48 unsafe increase tp

he gate thickness of the regulator


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hw+.25)

.4)/2 & L = (a2 +b2).5

equation get t


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for corrosion

s = 8 mm, 10, 12 ,30mm

panel

P = w h = (1) (a-.25)

11 = 3.1 & hg = 3.1 + .25 = 3.35 m

4 = 4.4

5 = 14.74 < 16 m2 use single steel gate

1.34 & b = 4.4 /2 = 2.2

= 1.09

9 * (1.34)2 * (2.2)2 /(2t2((1.34)2+(2.2)2)


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mm = 12 mm take tg = 12 mm

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regulator types