CN105369818B - Comb teeth trench type division and closure construction method of double-row steel sheet-piled cofferdam of coast - Google Patents
Comb teeth trench type division and closure construction method of double-row steel sheet-piled cofferdam of coast Download PDFInfo
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- CN105369818B CN105369818B CN201510868265.8A CN201510868265A CN105369818B CN 105369818 B CN105369818 B CN 105369818B CN 201510868265 A CN201510868265 A CN 201510868265A CN 105369818 B CN105369818 B CN 105369818B
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- steel sheet
- pile
- cofferdam
- storehouse
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Revetment (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention provides a comb teeth trench type division and closure construction method of a double-row steel sheet-piled cofferdam of a coast. According to the technical scheme, the method comprises the following steps: a, determining the location and prepared width of a closure gap; b, constructing all double-row steel sheet-piled cofferdams, excepting the double-row steel sheet-piled cofferdams at the outsides of a closure chamber and a division chamber; c, constructing a steel sheet-pile wall of the division chamber and a diaphragm steel sheet-pile wall; d, cutting the steel sheet-pile wall of the division chamber at intervals of one or a plurality of steel sheet piles; e, pulling up the division chamber, and cutting an upper part structure of the steel sheet pile to form a comb teeth trench flowing channel; f, constructing a steel sheet-pile wall of the closure chamber; g, cutting the division chamber, and inserting back an upper component of the steel sheet pile. According to the method, the characteristics of the structure of the double-row steel sheet-piled cofferdam is fully utilized to solve the problem of division in the closure of the double-row steel sheet-piled cofferdam, and the cofferdam closure risk and the construction difficulty can be reduced; secondary cofferdams cannot be additionally constructed during the closure of the double-row steel sheet-piled cofferdam, so that the cofferdam construction is sped up, and the total cost of the cofferdam can be decreased.
Description
Technical field
The present invention relates to a kind of cofferdam river closure construction method in construction project field, double more particularly, to a kind of strand
Steel sheet-pile cofferdam river closure construction method.
Background technology
At present, the coastal region engineering construction on the ground such as Zhejiang, Shanghai, Guangdong can use double steel sheet-pile cofferdam.Double steel
Sheet-pile cofferdam is to connect to form two row's steel sheet-pile walls using the U-shaped steel sheet pile of multi-disc both sides belt lock catch, and in two row's steel sheet-pile walls
Between Cast-in-situ Piles in Sand-filling or soil formed.Cofferdam has that Stability Analysis of Structures, floor space are little, speed of application is fast, environmental protection and investment reduction
The advantages of.
It is accelerating construction progress during double steel sheet pile cofferdam construction, needs two construction teams and groups or multiple teams and groups
Construction.For linear double steel sheet-pile cofferdam using two ends progressively to the arrangement and method for construction of middle propulsion, for annular double steel plate
The arrangement and method for construction that pile cofferdam is advanced from a starting point to terminal, both schemes finally can all run into steel sheet pile closure opertation.
Under the conditions of littoral environment, can be affected by tidewater fluctuation during closure, cause Longkou cofferdam both sides produce certain water-head and
Larger flow velocity so that last several closures steel sheet pile produces huge swing, causes Longkou both sides steel sheet pile not in one plane,
So that closure cannot be smoothed out.At present conventional construction method is to fill son by sandstone charging pipe bag on the outside of the closure section of cofferdam
Dike, after small dike's closure double steel sheet-pile cofferdam river closure construction is carried out again.The subject matter that this kind of construction method is present is：In shore
Sea is coordinated by under tidewater influence condition due to lacking water conservancy diversion, and small dike's closing construction has greater risk and difficulty, and needs to wait for son
Double steel sheet-pile cofferdam river closure construction is carried out again after the completion of dike construction, small dike is finally also removed, and construction period length, investment are big.
The content of the invention
The purpose of the present invention is for above-mentioned problem, there is provided a kind of mutually to fit with double steel sheet pile cofferdam structure feature
Cofferdam river closure construction method answer, easy construction, reduces technical difficulty and risk, reduces dam project total cost, contracting
Short cofferdam closure total lever factor.
The technical solution adopted in the present invention is：A kind of double steel sheet-pile cofferdam comb groove in strand leads river closure construction method,
Its step is as follows：
A, the Longkou position for determining double steel sheet-pile cofferdam and reserved width, the section arrangement closure storehouse in Longkou, in closure storehouse
Both sides arrangement water conservancy diversion storehouse；
B, construction complete remaining the double steel sheet-pile cofferdam in addition to closure storehouse and water conservancy diversion storehouse；
C, water conservancy diversion storehouse steel sheet-pile wall and tabula steel sheet-pile wall are set, purlin and pull bar are enclosed in installation, the backfill design in water conservancy diversion storehouse
Implant；
D, by water conservancy diversion storehouse steel sheet-pile wall according to the order for being spaced one or more steel sheet pile, leading at cutting setting elevation
Stream storehouse steel sheet-pile wall cutting is divided into that water conservancy diversion storehouse cuts open steel sheet pile upper component and water conservancy diversion storehouse cuts open steel sheet pile lower member；
E, pull up water conservancy diversion storehouse and cut open steel sheet pile upper component, make water conservancy diversion storehouse steel sheet-pile wall form comb groove flow channels；
F, closure storehouse steel sheet-pile wall is set, purlin and pull bar are enclosed in installation, and backfill in closure storehouse designs implant to design altitude；
G, water conservancy diversion storehouse is cut open steel sheet pile upper component turn back to, and by the steel sheet-pile wall otch welding of water conservancy diversion storehouse at low tide
Reinforcement, backfill design implant completes double steel sheet-pile cofferdam river closure construction to design altitude in water conservancy diversion storehouse.
The water conservancy diversion storehouse and closure storehouse are to be separated double steel cofferdam using tabula steel sheet-pile wall.
One or more water conservancy diversion storehouses are arranged in closure storehouse both sides.
The cutting setting elevation is more than mean tide tlevel.
Backfill design implant in the water conservancy diversion storehouse, is filled to below water conservancy diversion storehouse cutting setting elevation.
Beneficial effects of the present invention：
(1) present invention makes full use of double steel sheet-pile cofferdam own structural characteristics, creatively solves double steel sheet pile
Water conservancy diversion problem when cofferdam joins the two sections of a bridge, etc, reduces cofferdam closure risk and difficulty of construction；
(2) present invention eliminates double steel sheet-pile cofferdam join the two sections of a bridge, etc when another facility brigade cofferdam, accelerate cofferdam construction speed,
Reduce cofferdam total cost.
Description of the drawings
Fig. 1 is closure frontal plane schematic diagram in cofferdam Longkou in the embodiment of the present invention；
Fig. 2 is closure front water conservancy diversion storehouse comb groove excessively stream floor map in cofferdam in the embodiment of the present invention；
Fig. 3 is water conservancy diversion storehouse comb groove excessively stream floor map after cofferdam closure in the embodiment of the present invention；
Fig. 4 is floor map after water conservancy diversion storehouse closure in the embodiment of the present invention；
Fig. 5 is water conservancy diversion storehouse comb groove elevational schematic view in the embodiment of the present invention.
In figure：1 Longkou；2 water conservancy diversion storehouses；3 closure storehouses；4 enclose purlin；5 pull bars；21 water conservancy diversion storehouse steel sheet-pile walls；22 tabula steel sheet piles
Wall；31 closure storehouse steel sheet-pile walls；211 water conservancy diversion storehouses retain steel sheet pile；212 water conservancy diversion storehouses cut open steel sheet pile superstructure；213 water conservancy diversion storehouses
Cut open part-structure under steel sheet pile.
Specific embodiment
Lead river closure construction method to a kind of double steel sheet-pile cofferdam comb groove in strand of the invention below in conjunction with the accompanying drawings to say
It is bright.
To be circular layout, cofferdam axis total length about 1500m is enclosed for double steel sheet-pile cofferdam general arrangement in the embodiment of the present invention
Enclose the foundation ditch gross area and be about 140,000 m2.During double steel sheet-pile cofferdam dams, 1 Longkou, Longkou length 30m are set.It is logical
Setting water conservancy diversion storehouse is crossed, outside flow channels in foundation ditch have been got through, outside water level and closure closures current speed in foundation ditch is reduced, is had
Effect ensures smoothly damming for double steel sheet-pile cofferdam.
The concrete construction method of the present embodiment is as follows：
A, determine the position of Longkou 1 and reserved width；Longkou section selects less straightway, stormy waves, current smooth-going, tide dynamic force
Relatively weak position, its width determines according to cofferdam closure hydraulics and construction requirement；Longkou section arrangement closure storehouse 3, closure
2 water conservancy diversion storehouses 2 are respectively arranged in the both sides of storehouse 3, and the quantity and width in water conservancy diversion storehouse 2 is true according to cofferdam closure hydraulics and construction requirement
It is fixed；Water conservancy diversion storehouse 2 and closure storehouse 3 are to be separated double steel cofferdam using tabula steel sheet-pile wall 22；
B, construction complete remaining the double steel sheet-pile cofferdam in addition to closure storehouse 3 and water conservancy diversion storehouse 2；
C, water conservancy diversion storehouse steel sheet-pile wall 2-1 and tabula steel sheet-pile wall 2-2 is set using ship play or erection construction platform method, pacified
Dress encloses purlin 4 and pull bar 5, the backfill design implant in water conservancy diversion storehouse 2, is filled to 0.5m under water conservancy diversion storehouse cutting setting elevation, and cutting sets
Elevation is determined in mean tide tlevel above 0.5m；
D, by water conservancy diversion storehouse steel sheet-pile wall 21 according to interval a piece steel sheet pile order, cutting setting elevation at water conservancy diversion storehouse
The cutting of steel sheet-pile wall 21 is divided into water conservancy diversion storehouse and cuts open partial component 212 and water conservancy diversion storehouse on steel sheet pile and cuts open steel sheet pile lower member 213；
E, pull up water conservancy diversion storehouse and cut open steel sheet pile upper component 212, make water conservancy diversion storehouse steel sheet-pile wall 21 form comb groove and cross circulation
Road；
F, set closure storehouse steel sheet-pile wall 31, installation enclose purlin 4 and pull bar 5, cofferdam closure storehouse in backfill design implant
To design altitude；
G, water conservancy diversion storehouse is cut open steel sheet pile upper component 212 turn back to, and cut water conservancy diversion storehouse steel sheet-pile wall 21 at low tide
Mouth weld reinforcement, backfill design implant completes double steel sheet-pile cofferdam river closure construction to design altitude in water conservancy diversion storehouse 2.
Claims (5)
1. a kind of double steel sheet-pile cofferdam comb groove in strand leads river closure construction method, it is characterised in that：It is comprised the following steps：
A, Longkou (1) position for determining double steel sheet-pile cofferdam and reserved width, section arrangement closure storehouse (3) in Longkou, in closure
Storehouse (3) both sides arrangement water conservancy diversion storehouse (2)；
B, construction complete remaining the double steel sheet-pile cofferdam in addition to closure storehouse (3) and water conservancy diversion storehouse (2)；
C, water conservancy diversion storehouse steel sheet-pile wall (21) and tabula steel sheet-pile wall (22) are set, purlin (4) and pull bar (5) are enclosed in installation, in water conservancy diversion storehouse
(2) backfill design implant in；
D, by water conservancy diversion storehouse steel sheet-pile wall (21) according to the order for being spaced one or more steel sheet pile, leading at cutting setting elevation
Stream storehouse steel sheet-pile wall (21) cutting is divided into that water conservancy diversion storehouse cuts open steel sheet pile upper component (212) and water conservancy diversion storehouse cuts open steel sheet pile bottom structure
Part (213)；
E, pull up water conservancy diversion storehouse and cut open steel sheet pile upper component (212), make water conservancy diversion storehouse steel sheet-pile wall (21) form comb groove and cross circulation
Road；
F, closure storehouse steel sheet-pile wall (31) is set, purlin (4) and pull bar (5) are enclosed in installation, backfill in closure storehouse and design implant to setting
Meter elevation；
G, water conservancy diversion storehouse is cut open steel sheet pile upper component (212) turn back to, and cut in water conservancy diversion storehouse steel sheet-pile wall (21) at low tide
Mouth weld reinforcement, backfill design implant completes double steel sheet-pile cofferdam river closure construction to design altitude in water conservancy diversion storehouse (2).
2. a kind of double steel sheet-pile cofferdam comb groove in strand according to claim 1 leads river closure construction method, and its feature exists
In：The water conservancy diversion storehouse (2) and closure storehouse (3) are to be separated double steel cofferdam using tabula steel sheet-pile wall (22).
3. a kind of double steel sheet-pile cofferdam comb groove in strand according to claim 1 leads river closure construction method, and its feature exists
In：One or more water conservancy diversion storehouses (2) are arranged in closure storehouse (3) both sides.
4. a kind of double steel sheet-pile cofferdam comb groove in strand according to claim 1 leads river closure construction method, and its feature exists
In：The cutting setting elevation is more than mean tide tlevel.
5. a kind of double steel sheet-pile cofferdam comb groove in strand according to claim 1 leads river closure construction method, and its feature exists
In：Backfill design implant in water conservancy diversion storehouse described in step c (2), is filled to below water conservancy diversion storehouse (2) cutting setting elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868265.8A CN105369818B (en) | 2015-12-02 | 2015-12-02 | Comb teeth trench type division and closure construction method of double-row steel sheet-piled cofferdam of coast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510868265.8A CN105369818B (en) | 2015-12-02 | 2015-12-02 | Comb teeth trench type division and closure construction method of double-row steel sheet-piled cofferdam of coast |
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| Publication Number | Publication Date |
|---|---|
| CN105369818A CN105369818A (en) | 2016-03-02 |
| CN105369818B true CN105369818B (en) | 2017-04-12 |
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| CN201510868265.8A Active CN105369818B (en) | 2015-12-02 | 2015-12-02 | Comb teeth trench type division and closure construction method of double-row steel sheet-piled cofferdam of coast |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109024637B (en) * | 2018-07-21 | 2020-07-14 | 四川启创建设工程有限公司 | Combined cofferdam and construction method thereof |
| CN113417303B (en) * | 2021-07-10 | 2022-06-07 | 乐清市大禹水利水电工程有限公司 | Coastal double-row steel sheet pile cofferdam diversion and interception structure and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101892632B (en) * | 2009-05-19 | 2012-05-30 | 上海市基础工程有限公司 | Construction method of structural system of river under no-cutoff working condition |
| KR100936161B1 (en) * | 2009-07-31 | 2010-01-12 | 현대엔지니어링 주식회사 | Nature friendly polygon cell type coffering method for harbor, river and dam construction |
| KR101038598B1 (en) * | 2009-09-02 | 2011-06-03 | 한창헌 | A Retaining Wall And Method For It |
| JP2015129372A (en) * | 2014-01-06 | 2015-07-16 | 五洋建設株式会社 | Sheet pile and cutoff method |
| CN104452785B (en) * | 2014-11-06 | 2016-01-06 | 中铁十五局集团有限公司 | Larsen steel sheet pile cofferdam folding construction method |
| CN104805854B (en) * | 2015-04-29 | 2017-03-08 | 中铁四局集团第二工程有限公司 | A kind of Deep Water Ultra-long steel sheet pile cofferdam construction method under tide environment |
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Address after: 310002, No. 66, Funing lane, Shangcheng District, Zhejiang, Hangzhou Patentee after: Zhejiang water resources and Hydropower Survey and Design Institute Co.,Ltd. Address before: 310002, No. 66, Funing lane, Shangcheng District, Zhejiang, Hangzhou Patentee before: ZHEJIANG DESIGN INSTITUTE OF WATER CONSERVANCY & HYDROELECTRIC POWER |