CN113605421A - Method for mounting steel sheet pile - Google Patents
Method for mounting steel sheet pile Download PDFInfo
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- CN113605421A CN113605421A CN202110784718.4A CN202110784718A CN113605421A CN 113605421 A CN113605421 A CN 113605421A CN 202110784718 A CN202110784718 A CN 202110784718A CN 113605421 A CN113605421 A CN 113605421A
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- steel sheet
- sheet pile
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 212
- 239000010959 steel Substances 0.000 title claims abstract description 212
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 16
- 238000009412 basement excavation Methods 0.000 claims description 10
- 239000011435 rock Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 9
- 238000010009 beating Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000014121 butter Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
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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)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The application provides a method for installing a steel sheet pile, which comprises the following steps: slope-laying and excavating around a preset cofferdam area and laying steel sheet piles in a plug-in manner; inserting and driving the steel sheet piles to the corner piles for folding, and adjusting the size of a folding opening of the steel sheet piles; and inserting and driving the folded steel sheet piles to complete the installation of the steel sheet pile cofferdam. The method for installing the steel sheet pile has the advantages of convenience in operation, easiness in controlling the verticality and the position precision of the steel sheet pile and short construction period, ensures the safety and the smooth implementation of projects, completes the projects according to the target construction period, and has good social benefits and economic benefits.
Description
Technical Field
The application relates to the field of construction of bearing platform steel cofferdams, in particular to a method for installing a steel sheet pile.
Background
The steel sheet pile cofferdam is a common sheet pile cofferdam. The steel sheet pile is a section steel with a locking notch, and the section of the steel sheet pile has a straight plate shape, a groove shape, a Z shape and the like, and has various sizes and interlocking forms, and the steel sheet pile is commonly in a Laerson type, a Lakevanna type and the like. The steel sheet pile cofferdam has the advantages that: the strength is high, and the soil can be easily driven into a hard soil layer; the waterproof performance is good, and the construction in deep water can be realized; the cofferdams with various shapes can be formed according to the needs and can be repeatedly used.
However, in the process of constructing the steel sheet pile cofferdam, the problems of difficult driving, slow footage and the like are caused due to the problems of geology and hydrology of the site where the project is located, the material of the steel sheet pile and the like, and the steel sheet pile cannot be smoothly folded due to the fact that the size of a folding opening of the steel sheet pile is too large or too small at the folding position, so that the steel sheet pile needs to be inserted and driven again, and the project progress is seriously influenced.
Disclosure of Invention
The purpose of the application is to provide a steel sheet pile installation method which is simple to operate and high in construction precision of the steel sheet pile.
In order to achieve the above object, the present application provides the following technical solutions:
a method for installing a steel sheet pile comprises the following steps:
slope-laying and excavating around a preset cofferdam area and laying steel sheet piles in a plug-in manner;
inserting and driving the steel sheet piles to the corner piles for folding, and adjusting the size of a folding opening of the steel sheet piles;
and inserting and driving the folded steel sheet piles to complete the installation of the steel sheet pile cofferdam.
Further setting: the method for adjusting the size of the steel sheet pile at the folding opening comprises the following steps:
when the size of the folding opening of the steel sheet pile is overlarge, lifting lugs are arranged on the steel sheet pile on two sides of the folding opening, and the steel sheet pile on two sides of the folding opening is aligned by using a chain block or a turning pulley;
when the size of the folding opening of the steel sheet pile is too small, lifting lugs are arranged on the steel sheet pile on two sides of the folding opening, and a jack is used for abutting against the steel sheet pile on two sides of the folding opening so as to push the folding opening to two sides.
Further setting: under the condition that the size of the folding opening of the steel sheet pile is overlarge,
when the size of the folding opening is large, lifting lugs are arranged in parallel up and down of the steel sheet piles on two sides of the folding opening according to the difference of the sizes of the folding opening;
when the size of the folding opening is small at the top and big at the bottom, the lifting lugs of the steel sheet piles at the two sides of the folding opening are arranged at the lower positions of the steel sheet piles.
Further setting: the locking openings of the steel sheet piles on the two sides of the folding opening are positioned on the same plane.
Further setting: the steel sheet piles on the two sides of the closure opening are arranged in a staggered manner.
Further setting: and (3) excavating the steel sheet pile to the rock surface or not less than the elevation of the bottom sealing concrete, and releasing the slope on the side surface during excavation.
Further setting: before inserting and driving the steel sheet pile, positioning and inserting and driving a guide device at an excavation position, wherein the positioning and inserting and driving of the guide device comprise the following steps:
determining and marking four angular points of the guide device, digging a groove according to the marked position, placing the guide device at an appointed position for temporary fixation by matching with a crane, and welding and fixing the guide device and the anchor pile after adjusting and aligning the guide device.
Further setting: drilling a hoisting hole at the upper end of the steel sheet pile, and lifting the steel sheet pile by using inserting and beating equipment to abut against the guide device for lowering;
and the lower end of the steel sheet pile is provided with a guy rope, and the guy rope is used for controlling the positive and negative directions of the steel sheet pile.
Further setting: and detecting the perpendicularity of the steel sheet pile when the steel sheet pile is placed for 1-2 m every time, and pulling the steel sheet pile up for 1-2 m and placing the steel sheet pile again when the steel sheet pile is inclined so as to correct the deviation of the steel sheet pile.
Further setting: and when the inclination of the steel sheet pile along the axis is larger, correcting the steel sheet pile by adopting a special-shaped pile, wherein the special-shaped pile is a plate-shaped part of which the upper width is larger than that of the standard steel sheet pile and the lower width is smaller than that of the standard steel sheet pile.
Compared with the prior art, the scheme of the application has the following advantages:
the installation method of the steel sheet pile adopts the construction method that the supporting and guiding device is arranged firstly, then the steel sheet pile is excavated and then the steel sheet pile is inserted and driven, the operation is more convenient, the verticality and the position precision of the steel sheet pile are easier to control, the construction period is shorter, the installation method of the steel sheet pile ensures that the project is safe and smooth to implement, the project is finished according to the target construction period, and the installation method has good social benefit and economic benefit.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a process flow diagram of a steel sheet pile installation method of the present application;
fig. 2 is a schematic diagram of slope excavation and steel sheet pile lowering in the steel sheet pile installation method of the present application;
fig. 3a is a schematic diagram illustrating adjustment of the size of a closure opening when the size of the closure opening is large at the top and small at the bottom in the steel sheet pile installation method of the present application;
fig. 3b is a schematic diagram illustrating adjustment of the size of a closure opening when the size of the closure opening is small at the top and large at the bottom in the steel sheet pile installation method of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Please refer to fig. 1 and 2, the present application relates to a method for installing a steel sheet pile, which mainly solves the problems of excessive verticality and too large or too small space between two steel sheets at the closure of the existing steel sheet pile, ensures that the steel sheet pile can be smoothly inserted and driven to complete closure, is convenient to operate, and can effectively improve the closure efficiency of the steel sheet pile.
The steel sheet pile of this application adopts larsen IV level steel sheet pile, and steel sheet pile is before the installation, and constructor need carry out parameters such as apparent surface defect, length, width, thickness, height, end rectangle ratio, straightness and fore shaft shape to steel sheet pile and detect, and the steel sheet pile that discovery is not conform to the requirement needs to correct.
The installation method of the steel sheet pile specifically comprises the following steps:
(1) and (4) slope-laying and excavating around a preset cofferdam area and laying steel sheet piles in an inserting and beating mode.
Because the construction site bottom of this application is cobble layer and stratum, and the steel sheet pile is difficult to be squeezed into the installation, so adopt the percussion drill earlier and punch around the cushion cap, insert the steel pipe in cobble layer and stratum as the stock, pour concrete in order to form the anchor pile. Preferably, the steel pipe of the present embodiment is made of
And the distance between adjacent anchor rods is 6.88 m.
After the construction of the anchor piles is completed, slope releasing excavation of the steel plate pile installation position is carried out, excavation is carried out between adjacent anchor piles by utilizing an excavator, the width of the bottom of excavation in the embodiment is 1.2m, the excavation depth is the height mark of the excavated rock surface or not less than the bottom sealing concrete, and slope releasing is carried out on the side surface while excavation is carried out. Meanwhile, a certain width can be excavated around the anchor pile corresponding to the position where the steel sheet pile is connected with the anchor pile, so that the connection effect of the subsequent concrete pouring is ensured.
Before inserting and driving the steel sheet pile, a guide device can be installed on the basis of the anchor pile, the perpendicularity of inserting and driving the steel sheet pile and the axis position of the steel sheet pile can be effectively controlled through the guide device, and sufficient operation space can be reserved for construction of the bearing platform. Preferably, waivers are adopted as the guiding devices in the embodiment, and the positioning and beating of waivers includes the following steps: determining four angular points of wails by a measuring group, drawing marks, excavating grooves by an operating team according to the positions of the marks of lofting and matching with a crane to place the wails to an appointed position for temporary fixing, and after adjusting and aligning the wails, temporarily supporting and positioning steel bars between key positions of four sides of the wails and the formed anchor piles by welding to fix the wails. After wailing is finished, inserting and beating construction of the steel sheet pile can be carried out.
In the inserting and driving construction process of the steel sheet pile, a reinforcing plate is arranged at the upper end of the steel sheet pile, a hoisting hole is drilled, a cable rope is arranged at the lower end of the steel sheet pile, inserting and driving equipment is adopted to lower the steel sheet pile, and when the steel sheet pile is hoisted to a vertical state or a state close to the vertical state, the cable rope is used for controlling the positive and negative directions of the steel sheet pile so as to ensure the correct inserting and driving direction of the steel sheet pile. When the steel sheet pile is put down, the back of the steel sheet pile abuts against the guide device so that the steel sheet pile is in place and inserted downwards. In addition, in order to facilitate the downward insertion of the steel sheet pile, butter can be coated in the lock catch of the steel sheet pile before the steel sheet pile is inserted and driven.
In the process of putting the steel sheet pile downwards, the steel sheet pile is easy to deflect, and whether the steel sheet pile is straight or not is observed by using a plumb bob in two mutually perpendicular directions, particularly a first steel sheet pile which is the reference of the whole steel sheet pile cofferdam, so that repeated measurement and inspection are needed, and the vertical direction and the accurate position of the steel sheet pile are ensured. After the first steel sheet pile is transferred, the rest steel sheet piles are transferred by taking the first steel sheet as a reference, and the rest steel sheet piles are symmetrically transferred from the first steel sheet pile to two sides one by one.
Specifically, every time the steel sheet pile sinks for 1-2 m, the perpendicularity of the steel sheet pile needs to be detected, and if the steel sheet pile is found to have deflection, the following measures can be taken to correct the deviation: the steel sheet pile is upwards pulled out by 1-2 m at the inclined position, and then is placed again, so that the perpendicularity and the position of the steel sheet pile are corrected, and the inclination of the steel sheet pile is reduced. When the inclination is smaller, a winch or a hoist and a steel cable steel sheet pile can be adopted to reversely pull and then hammer. When the inclination of the steel sheet pile along the axis is larger, the steel sheet pile can be corrected in an auxiliary way by inserting the special-shaped pile downwards along the side edge of the inclined steel sheet pile. The special-shaped pile is a plate-shaped part with the upper width larger than that of the standard steel sheet pile and the lower width smaller than that of the standard steel sheet pile, and the special-shaped pile can be processed on site according to the actual inclination of the steel sheet pile.
In addition, in the embodiment, the inclination of the steel sheet pile which is inserted downwards is less than or equal to 5 thousandths, the deviation of the correct insertion position of each group of steel sheet piles is less than or equal to +/-15 mm, and the distance between the steel sheet piles and wails is not more than 20 mm.
(2) And inserting and driving the steel sheet piles to the preset positions close to the corner piles for folding, and adjusting the size of the folding openings of the steel sheet piles.
The steel sheet pile cofferdam is folded at a position close to the corner piles, and the position which is 4-5 steel sheet pile widths away from the corner piles is specifically selected for folding. When the steel sheet piles are to be folded, constructors need to measure and calculate the linear distance of the bottom of each steel sheet pile, and the number of required steel sheet piles is calculated according to the width of each steel sheet pile, so that the inserting and driving mode of the subsequent steel sheet piles is determined, specifically, the steel sheet piles are added, or the steel sheet piles are inserted and driven to form an outward circular arc.
In order to facilitate the folding of the steel sheet piles, the steel sheet piles on two sides of the folding position are arranged in a staggered mode, the steel sheet piles on two sides of the folding position are ensured to be in a plane, meanwhile, the direction of the corner pile is adjusted, the locking notch on one side of the corner pile is parallel to the locking notch on the steel sheet pile on the opposite side of the corner pile, and the locking notches of the steel sheet piles on two sides of the folding position are enabled to be located in the same plane.
When the size of the folding opening of the steel sheet pile is too large or too small, a constructor can adjust the size of the folding opening according to the following steps.
When the size of the folding opening of the steel sheet pile is overlarge, lifting lugs are arranged on the steel sheet pile on two sides of the folding opening, and the steel sheet pile on two sides of the folding opening is aligned by using a chain block or a steering pulley. Specifically, referring to fig. 3a, when the size of the folding opening is large, lifting lugs are arranged in parallel at the upper and lower ends of the steel sheet piles at the two sides of the folding opening according to the difference of the size of the folding opening, and then the steel sheet piles at the two sides of the folding opening are aligned by the lifting lugs through a chain block or a turning pulley until the folding requirements are met. And when the size of the folding opening is small at the top and big at the bottom, please refer to fig. 3b, the lifting lugs of the steel sheet piles at the two sides of the folding opening are arranged at the lower position of the steel sheet piles, and can be placed underwater for alignment if necessary until the folding requirement is met. The size of the closure opening is adjusted by adopting a chain block or a diverting pulley, the steel sheet piles on two sides of the closure opening are oppositely and parallelly pulled, so that the steel sheet pile lock catches on two sides of the closure opening are ensured to be positioned in the same plane, and the steel sheet piles on the other two sides of the closure opening are connected with good stability by oppositely pulling, thereby facilitating pile insertion and closure.
When the size of the folding opening of the steel sheet pile is too small, lifting lugs are arranged on the steel sheet pile on two sides of the folding opening, a jack is used for connecting the lifting lugs to abut against the steel sheet pile on two sides of the folding opening, so that the folding opening is pushed towards two sides, the vertical size of the steel sheet pile is adjusted, and the locking openings of the steel sheet pile on two sides of the folding opening are ensured to be positioned in the same plane.
(3) And finally, inserting and driving the folded steel sheet piles to complete the installation of the steel sheet pile cofferdam.
After the steel sheet pile cofferdam is installed, a foundation pit can be excavated in an area enclosed by the steel sheet pile cofferdam to construct a bearing platform.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. The method for installing the steel sheet pile is characterized by comprising the following steps of:
slope-laying and excavating around a preset cofferdam area and laying steel sheet piles in a plug-in manner;
inserting and driving the steel sheet piles to the corner piles for folding, and adjusting the size of a folding opening of the steel sheet piles;
and inserting and driving the folded steel sheet piles to complete the installation of the steel sheet pile cofferdam.
2. The method for installing a steel sheet pile according to claim 1, wherein the step of adjusting the size of the steel sheet pile at the closure comprises the steps of:
when the size of the folding opening of the steel sheet pile is overlarge, lifting lugs are arranged on the steel sheet pile on two sides of the folding opening, and the steel sheet pile on two sides of the folding opening is aligned by using a chain block or a turning pulley;
when the size of the folding opening of the steel sheet pile is too small, lifting lugs are arranged on the steel sheet pile on two sides of the folding opening, and a jack is used for abutting against the steel sheet pile on two sides of the folding opening so as to push the folding opening to two sides.
3. The method of installing a steel sheet pile according to claim 2, wherein, in the case where the size of the steel sheet pile closure is excessively large,
when the size of the folding opening is large, lifting lugs are arranged in parallel up and down of the steel sheet piles on two sides of the folding opening according to the difference of the sizes of the folding opening;
when the size of the folding opening is small at the top and big at the bottom, the lifting lugs of the steel sheet piles at the two sides of the folding opening are arranged at the lower positions of the steel sheet piles.
4. The method of installing a steel sheet pile according to claim 2, wherein the locking notches of the steel sheet pile on both sides of the folding notch are located on the same plane.
5. The method for installing the steel sheet pile according to claim 1, wherein the steel sheet piles on both sides of the closure opening are arranged in a staggered manner.
6. The method for installing the steel sheet pile according to claim 1, wherein the steel sheet pile is excavated to a depth of a rock surface or not less than a bottom elevation of the closed bottom concrete, and the side surface is set down during excavation.
7. The method for installing the steel sheet pile according to claim 1, wherein before inserting and driving the steel sheet pile, the guide device is positioned and driven at the excavation position, and the positioning and driving of the guide device comprises the following steps:
determining and marking four angular points of the guide device, digging a groove according to the marked position, placing the guide device at an appointed position for temporary fixation by matching with a crane, and welding and fixing the guide device and the anchor pile after adjusting and aligning the guide device.
8. The method for installing the steel sheet pile according to claim 7, wherein a hoisting hole is drilled at the upper end of the steel sheet pile, and the steel sheet pile is lifted and hoisted by inserting and driving equipment to be abutted against the guide device for lowering;
and the lower end of the steel sheet pile is provided with a guy rope, and the guy rope is utilized to control the positive and negative directions of the steel sheet pile.
9. The method for installing the steel sheet pile according to claim 8, wherein the perpendicularity of the steel sheet pile is detected every time the steel sheet pile is lowered for 1-2 m, and when the steel sheet pile has a deviation, the steel sheet pile is pulled upwards for 1-2 m and lowered again so as to correct the deviation of the steel sheet pile.
10. The method for installing a steel sheet pile according to claim 9, wherein when the inclination of the steel sheet pile along the axis is large, the steel sheet pile is corrected by using a special-shaped pile, which is a plate-shaped member having an upper width larger than that of the standard steel sheet pile and a lower width smaller than that of the standard steel sheet pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784718.4A CN113605421A (en) | 2021-07-12 | 2021-07-12 | Method for mounting steel sheet pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110784718.4A CN113605421A (en) | 2021-07-12 | 2021-07-12 | Method for mounting steel sheet pile |
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| CN113605421A true CN113605421A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110784718.4A Pending CN113605421A (en) | 2021-07-12 | 2021-07-12 | Method for mounting steel sheet pile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838993A (en) * | 2010-05-17 | 2010-09-22 | 中铁二十局集团有限公司 | Construction technology of steel sheet pile cofferdam for Yellow River Channel internal support table construction |
| CN104294835A (en) * | 2014-10-14 | 2015-01-21 | 中国水利水电第四工程局有限公司 | Steel sheet pile cofferdam constructing method |
| CN105040715A (en) * | 2015-07-29 | 2015-11-11 | 黑龙江省龙建路桥第三工程有限公司 | Method for building bridge construction cofferdam through steel sheet piles |
| CN105133627A (en) * | 2015-07-28 | 2015-12-09 | 安徽省新路建设工程集团有限责任公司 | Construction method for single-wall steel sheet pile cofferdam in running water state |
| CN113026782A (en) * | 2021-03-24 | 2021-06-25 | 中铁十六局集团有限公司 | Steel sheet pile cofferdam construction process |
-
2021
- 2021-07-12 CN CN202110784718.4A patent/CN113605421A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838993A (en) * | 2010-05-17 | 2010-09-22 | 中铁二十局集团有限公司 | Construction technology of steel sheet pile cofferdam for Yellow River Channel internal support table construction |
| CN104294835A (en) * | 2014-10-14 | 2015-01-21 | 中国水利水电第四工程局有限公司 | Steel sheet pile cofferdam constructing method |
| CN105133627A (en) * | 2015-07-28 | 2015-12-09 | 安徽省新路建设工程集团有限责任公司 | Construction method for single-wall steel sheet pile cofferdam in running water state |
| CN105040715A (en) * | 2015-07-29 | 2015-11-11 | 黑龙江省龙建路桥第三工程有限公司 | Method for building bridge construction cofferdam through steel sheet piles |
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| 刘磊: "浅谈桥梁水中墩钢板桩围堰施工技术", 《中国新技术新产品》 * |
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Application publication date: 20211105 |
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