CN106958235B - A kind of Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater - Google Patents
A kind of Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater Download PDFInfo
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- CN106958235B CN106958235B CN201710194587.8A CN201710194587A CN106958235B CN 106958235 B CN106958235 B CN 106958235B CN 201710194587 A CN201710194587 A CN 201710194587A CN 106958235 B CN106958235 B CN 106958235B
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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Abstract
The invention discloses the Hydraulic Design Methods of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater, measure the water drainage runner of pending dissipation and scouring regulation along Cheng Shuishen, runner two sides overcurrent ratio, determine therefrom that water conservancy diversion bank height, water conservancy diversion bank number and baffle wall style, the height of baffle pier and percent opening；Pump house exit velocity, pump house outlet overall width, water outlet pond length are measured, position, arc length and the radius of each road water conservancy diversion bank are calculated according to the Hydraulic Design formula provided；Flow velocity before measurement baffle pier pier calculates each road baffle wall style position according to the Hydraulic Design formula provided；Final design goes out water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater, to solve the problems, such as the dissipation and scouring in abnormity water drainage channel.
Description
Technical field
The invention belongs to hydraulic structure flood-discharge energy-dissipating fields in hydraulic and hydroelectric engineering, and in particular to water conservancy diversion bank-baffle pier-
The Hydraulic Design Method of beam column construction baffle wall style combined energy dissipater.
Background technique
Urban Waterlogging is a vital task of water conservancy, and especially " General Office of the State Council prevents waterlogging about municipal drainage is carried out
The notice of Facilities Construction work " since (Office of the State Council send out [2013] No. 23) publication, national Main Towns accelerate Urban Waterlogging facility
Planning construction process highlights the importance of new period Urban Waterlogging.However, being limited to the land used condition and planning limit in city itself
The factors such as system, the water drainage channel in building and actually using often and have some setbacks, and dissipation and scouring outstanding problem transports engineering itself
Row safety and people life property safety constitute a threat to.Especially coastal Main Towns, mostly by tropical storm and typhoon influence, flood
Damage caused by waterlogging evil takes place frequently, and is located in tidal reach in addition, and complicated hydraulic characteristic is that Urban Waterlogging increases unfavorable factor, and conventional energy dissipating is anti-
The technology of punching is difficult to meet abnormity water drainage channel dissipation and scouring requirement.Dissipation and scouring research at present is applied to lock and dam, such as Wen Heng more
Deng " downstream scour during gate opening " research, Hu Ming " low water head, large discharge per unit flood-discharge energy-dissipating form test grind
Study carefully ", the Y type flaring gate pier of Dong Baoshun etc. falls bank stilling pond combined energy dissipation mode；The research of Urban Waterlogging ambit then collects mostly
In in terms of Urban Waterlogging systematic planning, water drainage countermeasure, Urban Waterlogging, such as wait quietly proposing to establish store,
The modern city water drainage system that stagnant, row combines；Dissipation and scouring research for abnormity water drainage channel is then seldom.Since city is
Politics, economy, cultural center, the design superiority and inferiority of Urban Waterlogging, are directly related to urban development and people life property safety, row
Flood station once have an accident, caused by lose the destructive power for often substantially exceeding and being generally located at remote mountain areas gate dam damaged or destroyed by flood.Therefore,
The dissipation and scouring new technology for exploring adaptation city abnormity water drainage channel is particularly important.
Summary of the invention
It is intended to provide for the status and deficiency, the purpose of the present invention of the hydraulic structure Energy dissipation of flood discharging design of the prior art
A kind of Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater.The combined energy dissipation engineering is compared to normal
Rule dissipation and scouring facility has small hydraulics limitation, flexible arrangement and has both the advantages such as diversion function, can effectively solve different
The dissipation and scouring problem in shape water drainage channel, ensures engineering safety.
Survey calculation arranges water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater, and specific step is as follows:
Step 1 (1): measure the water drainage runner of pending dissipation and scouring regulation along Cheng Shuishen, measure left and right side runner
Mean velocity in section and cross-section average depth acquire runner left and right sides overcurrent ratio α, determine water conservancy diversion bank height, water conservancy diversion bank number, with
And the height and percent opening of baffle wall style, baffle pier, specific design method are as follows: energy dissipating or water conservancy diversion step by step by several times near bend are led
1/2~2/3 of mean depth before energy dissipater, water conservancy diversion bank number are added in the height control of stream bank, baffle pier and baffle wall style at this
For 1/ α -- (1/ α+1), and in diversion section equidistant placement, the shape of water conservancy diversion bank be it is arc-shaped, water conservancy diversion bank is connected by its head and root
Line and concave bank arrange that the arc radius of water conservancy diversion bank is by -60 ° of settings in 50 ° of center of arc angle at 30 °；
The pier clear spacing and pier center of the percent opening of baffle wall style and baffle pier away from the ratio between be 0.3-0.6, before baffle pier pier
Flow rate of water flow is higher, ratio selection is bigger, and flow rate of water flow is bigger at baffle wall style, and percent opening is chosen bigger；
(2): measurement pump house exit velocity, pump house outlet overall width, water outlet pond length calculate the cloth set of each road water conservancy diversion bank
It sets, arc length and radius；
First road water conservancy diversion bank the Hydraulic Design formula:
L1=0.874 × L×
In formula: L×Headed by road water conservancy diversion bank starting point to discharge bay RightWall distance, B0Overall width, L are exported for pump house0For water outlet
Pond length, V0For pump house exit velocity, g is acceleration of gravity, L1For water conservancy diversion bank arc length, the L1In subscript 1 be water conservancy diversion bank compile
Number, hereinafter L2、L3And L4Meaning can be analogized, R1For water conservancy diversion bank radius, the R1In subscript 1 be water conservancy diversion bank number, hereinafter
R2、R3And R4Meaning can be analogized；
Second water conservancy diversion bank the Hydraulic Design formula:
L2=1.0 × L1
R2=1.0 × R1
Third road water conservancy diversion bank the Hydraulic Design formula:
L3=0.776 × L1
R3=0.619 × R1
4th water conservancy diversion bank the Hydraulic Design formula:
L4=1.0 × L1
R4=1.0 × R1
(3): flow velocity before measurement baffle pier pier calculates each road baffle wall style position:
First of baffle wall style is away from baffle pier distance d1For
Second baffle wall style is away from baffle pier distance d2For
Third road baffle wall style is away from baffle pier distance d3For
In formula, V1For mean flow rate before baffle pier pier.
(4): baffle wall style uses beam column construction pattern, and lower part is connect using cylindrical body with basis, and top passes through wide cross
Each cylinder is linked to be entirety by beam, the ratio of pillar height and beam thickness according to test effect determination, water conservancy diversion bank, baffle wall style width and disappear
The thickness of power pier is determined according to structural strength.
Detailed description of the invention:
Fig. 1 is waterpower of Foochow somewhere Water logged area according to this water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater
The structural schematic diagram for the water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater that design method is designed；
Fig. 2 is waterpower of the Jiangxi somewhere water drainage lock according to this water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater
The structural schematic diagram for the water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater that design method is designed；
Fig. 3 is that Fujian somewhere river is set according to the waterpower of this water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater
The structural schematic diagram for the waterway regulation works that meter method is designed.
In figure: 1, Water logged area pump house, 2, pump house outlet, 3 discharge bays, 4, water conservancy diversion bank, 5, water outlet box culvert vertical pillars, 6, go out
Water tank is contained, 7, baffle pier, 8 new five hole locks, 9, beam column construction baffle wall style, 10, nine hole locks, 11, water drainage lock, 12, tributary bend.
Specific embodiment:
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
It according to described in Fig. 1, is calculated according to the design method, Fujian somewhere Water logged area is discharged box culvert 6 under the most unfavorable processing condition
Section mean depth about 1.64m, measures the mean velocity in section and cross-section average depth of left and right side runner, acquires runner left and right sides
Overcurrent ratio is 1/3, water conservancy diversion bank 4 of the project using the arc of 4 0.9m high, roughly equidistant arrangement.It is 30 ° that water conservancy diversion bank 4, which chooses angle, in
Heart angle is 51 °.Mean water about 1.62m between new five hole lock 8 and nine hole locks 10, flow velocity about 4~6m/s, water outlet box culvert 6 export
Place's flow velocity is maximum 6.09m/s.Project disappears totally in the baffle pier 7 of 19 high 1m, wide 0.8m of water outlet 6 exit of box culvert arrangement
7 clear spacing of power pier and center away from the ratio between be 0.56, lock 8 sluicing in new five hole is carried between new five hole lock 8 and nine hole locks 10
Flow direction arrangement 2 high 0.8m, percent opening 0.44 beam column construction baffle wall style 9, the beam column knot of 1 high 0.8m, percent opening 0.34
Structure baffle wall style 9.
It is 6.91m/s that Water logged area pump house, which exports 2 flow velocitys, and pump house exports 2 overall width 25m, 3 length 17m of discharge bay, according to upper
Formula is stated, first 4 start point distance of road water conservancy diversion bank is calculated and separates out 3 RightWall 22m of pond, arc length 19.3m, 4 radius of water conservancy diversion bank is
20.5m, Practical Project take 21m.Second water conservancy diversion bank 4 arc length 19.3m, radius 21m；4 arc length 15.0m of third road water conservancy diversion bank, half
Diameter 13m；4th water conservancy diversion bank 4 arc length 19.3m, radius 21m.
9 lower part of Water logged area beam column construction baffle wall style uses the cylindrical body and protection-apron of the equidistant placement of diameter 0.8m, high 0.5m
Each cylinder is linked to be entirety by the crossbeam of width 0.8m, thickness 0.3m by connection, top, so that forming high, width is disappearing for 0.8m
Power bank.
Embodiment 2
It according to described in Fig. 2, is calculated according to the design method, lock is drained flooded fields similar to S type in Jiangxi somewhere, average water between two bent angles
Deep 2.12m measures the mean velocity in section and cross-section average depth of left and right side runner, and acquiring runner left and right sides overcurrent ratio is
0.5, which arranges the water conservancy diversion bank 4 of the arc of 2 1.4m high, and choosing angle is 30 °, and central angle is 60 °.Second corner average water
Deep 2.09m, flow velocity about 5.1m/s, main flow area maximum flow rate 7.2m/s, region arrangement 1 totally 10 high 1.4m, width 0.8m
Baffle pier 7, clear spacing and center away from the ratio between for 0.6 and 1 high 1.1m, percent opening 0.5 beam column construction baffle wall style 9.
For this engineering, it is the 11 lockage maximum flow rate 7.3m/s of lock that drains flooded fields, pump house outlet 2 that pump house, which exports 2 flow velocitys,
Beam overall is lock chamber overall width 20m, and 3 length of discharge bay is distance about 21m of the lock chamber to the first bend, according to above-mentioned formula,
First 4 start point distance of road water conservancy diversion bank is calculated and separates out 3 RightWall 18.7m of pond, arc length 16.4m, 4 radius of water conservancy diversion bank is 15.7m,
Practical Project takes 15.5m.Second water conservancy diversion bank 4 arc length 16.4m, radius 15.5m.
In the engineering before 7 pier of baffle pier mean flow rate be 5.6m/s, according to above-mentioned formula calculate beam column construction baffle wall style 9 away from
The distance of baffle pier 7 is respectively 14.4m.
The engineering beam column construction baffle wall style 9, lower part use the cylindrical body and protection-apron of the equidistant placement of diameter 0.8m, high 0.8m
Connection, each cylinder is linked to be entirety by the crossbeam of width 0.8m, thickness 0.3m by top, to form high 1.1m, width 0.8m disappears
Power bank.
Embodiment 3
It is located at Heavenly Stems and Earthly Branches stream intersection according to Fujian somewhere waterway regulation works described in Fig. 3, tributary mainstream is biased on the left of river
Confluence is concentrated, intersection's mainstream effluent speed is larger, is unfavorable for opening the navigation or air flight.It is calculated by the design method, under design conditions, tributary
The outlet section depth of water about 2.2m measures the mean velocity in section and cross-section average depth of left and right side runner, acquires runner left and right sides mistake
For stream than being 0.5, which arranges the water conservancy diversion bank 4 of the arc of 2 1.1m high, and choosing angle is 30 °, and central angle is 60 °.Branch outflux is set
Maximum flow rate 5.5m/s, Heavenly Stems and Earthly Branches stream intersection mean depth 2.5m are counted, 1 totally 27 high 1.1m, width of arrangement in tributary exit
The baffle pier 7 of 2.1m, clear spacing and center away from the ratio between for 0.3,1 high 1.7m, percent opening 0.6 beam column construction baffle wall style 9.
For this engineering, it is tributary upstream velocity in curve 5.5m/s that pump house, which exports 2 flow velocitys, and pump house exports 2 beam overalls
Degree is tributary width 50m, and water outlet pond length is tributary upstream turning distance about 10m, and 3 RightWall of discharge bay is on tributary
Bend left bank is swum, according to above-mentioned formula, first 4 starting point of road water conservancy diversion bank is calculated apart from bend left bank 49.4m, arc length 43.1m,
4 radius of water conservancy diversion bank is 41.1m, and Practical Project takes 41m.Second water conservancy diversion bank 4 arc length 43.1m, radius 41m.
Mean flow rate is 5.5m/s before 7 pier of baffle pier in this engineering, calculates baffle wall style away from baffle pier according to above-mentioned formula
Distance is 13.8m.
This engineering beam column construction baffle wall style 4, lower part use the cylindrical body and protection-apron of the equidistant placement of diameter 1.5m, high 1.2m
Connection, each cylinder is linked to be entirety by the crossbeam of width 1.5m, thickness 0.5m by top, to form high 1.7m, width 1.5m disappears
Power bank 4.
The present embodiment not makes any form of restriction shape of the invention, material, structure etc., all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, belong to the technology of the present invention side
The protection scope of case.
Claims (3)
1. a kind of Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater, it is characterised in that: packet
Include following steps:
(1): measure the water drainage runner of pending dissipation and scouring regulation along Cheng Shuishen, the section for measuring left and right side runner is average
Flow velocity and cross-section average depth acquire runner left and right sides overcurrent ratio α, determine water conservancy diversion bank height, water conservancy diversion bank number, and the power that disappears
Bank, the height of baffle pier and percent opening, specific design method are as follows: energy dissipating or water conservancy diversion, water conservancy diversion bank disappear step by step by several times near bend
The control of the height of power pier and baffle wall style adds 1/2~2/3 of mean depth before energy dissipater at this, and water conservancy diversion bank number is 1/ α --
(1/ α+1), and in diversion section equidistant placement, the shape of water conservancy diversion bank be it is arc-shaped, water conservancy diversion bank by its head and root line with it is recessed
Bank arranges that the arc radius of water conservancy diversion bank is by -60 ° of settings in 50 ° of center of arc angle at 30 °；
(2): measurement pump house exit velocity, pump house outlet overall width, water outlet pond length, calculate each road water conservancy diversion bank position,
Arc length and radius；
First road water conservancy diversion bank the Hydraulic Design formula:
L1=0.874 × L×
In formula: L×Headed by road water conservancy diversion bank starting point to discharge bay RightWall distance, B0Overall width, L are exported for pump house0It is long for discharge bay
Degree, V0For pump house exit velocity, g is acceleration of gravity, L1For water conservancy diversion bank arc length, the L1In subscript 1 be water conservancy diversion bank number,
Hereinafter L2、L3And L4Meaning is analogized, R1For water conservancy diversion bank radius, the R1In subscript 1 be water conservancy diversion bank number, hereinafter R2、R3
And R4Meaning is analogized；
Second water conservancy diversion bank the Hydraulic Design formula:
L2=1.0 × L1
R2=1.0 × R1
Third road water conservancy diversion bank the Hydraulic Design formula:
L3=0.776 × L1
R3=0.619 × R1
4th water conservancy diversion bank the Hydraulic Design formula:
L4=1.0 × L1
R4=1.0 × R1
(3): flow velocity before measurement baffle pier pier calculates each road baffle wall style position:
First of baffle wall style is away from baffle pier distance d1For
Second baffle wall style is away from baffle pier distance d2For
Third road baffle wall style is away from baffle pier distance d3For
In formula, V1For water flow mean flow rate before baffle pier pier；
(4): baffle wall style uses beam column construction pattern, and lower part is connect using cylindrical body with basis, and top will by wide crossbeam
Each cylinder is linked to be entirety, and the ratio of pillar height and beam thickness is determined according to test effect, the width and baffle pier of water conservancy diversion bank, baffle wall style
Thickness according to structural strength determine.
2. a kind of the Hydraulic Design of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater according to claim 1
Method, it is characterised in that: the pier clear spacing of the baffle pier and pier center away from the ratio between be 0.3-0.6, water flow stream before baffle pier pier
Speed is higher, ratio selection is bigger.
3. a kind of the Hydraulic Design of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater according to claim 1
Method, it is characterised in that: the percent opening of the baffle wall style is 0.3-0.6, and flow rate of water flow is bigger at baffle wall style, and percent opening selection is got over
Greatly.
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| CN201710194587.8A CN106958235B (en) | 2017-03-29 | 2017-03-29 | A kind of Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater |
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| CN201710194587.8A CN106958235B (en) | 2017-03-29 | 2017-03-29 | A kind of Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater |
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| CN109629507B (en) * | 2019-01-04 | 2020-01-17 | 河海大学 | Method for improving hydraulic flow state of diffusion type diversion pool |
| CN109797715B (en) * | 2019-01-21 | 2020-07-17 | 河海大学 | Method for optimizing hydraulic flow state of diffusion section of aqueduct |
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| CN201933472U (en) * | 2010-12-29 | 2011-08-17 | 福建省水利水电勘测设计研究院 | Dam structure utilizing flaring piers and dam face small flip buckets to jointly discharge flood and dissipate energy |
| WO2014205527A1 (en) * | 2013-06-24 | 2014-12-31 | Sccap Engenharia Ltda | A system for monitoring the quality of execution of excavated piles and tunnel bores |
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