CN105421474A - Integral construction method of pile planting cofferdam platform used for rock strata low-pile cap - Google Patents
Integral construction method of pile planting cofferdam platform used for rock strata low-pile cap Download PDFInfo
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- CN105421474A CN105421474A CN201510735718.XA CN201510735718A CN105421474A CN 105421474 A CN105421474 A CN 105421474A CN 201510735718 A CN201510735718 A CN 201510735718A CN 105421474 A CN105421474 A CN 105421474A
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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
Abstract
The invention discloses an integral construction method of a pile planting cofferdam platform used for a rock strata low-pile cap and relates to the field of construction of rock stratum low-pile caps. The integral construction method comprises the following steps that S1, a lifting platform and a drilling platform are constructed on a rock stratum at the same time, and a cofferdam construction channel is reserved between the lifting platform and the drilling platform in the lifting platform and the drilling platform construction process; and S2, cofferdam construction is conducted on the drilling platform in the cofferdam construction channel, and pile foundation drilling is conducted on the drilling platform at the same time; during the cofferdam construction, after steel sheet piles required by a cofferdam are planted into the rock stratum through a static-pressure pile planting machine, a steel sheet pile cofferdam inner supporting structure is installed, water drawing is conducted in the cofferdam, and an excavator is lifted into the cofferdam for conducting no-water excavation.. According to the integral construction method, underwater blasting is changed into no-water excavation, the construction period is short, required manpower and material resources are few, and construction requirements can be met.
Description
Technical field
The present invention relates to lithostratigraphy low pile cap construction field, be specifically related to a kind ofly plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap.
Background technology
At present, tradition to the construction method of the low pile cap of lithostratigraphy is: first carry out underwater demolition, then construction drill platform and cofferdam.But, very fast for flow velocity and cannot implement underwater demolition stake position for, when adopting traditional construction method to construct to stake position, not only need to drop into huge man power and material, and construction period is longer, is difficult to meet construction requirement.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide and a kind ofly plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap.Underwater demolition is changed into anhydrous excavation operation by the present invention, and not only excavation area and side measure less, and construction period is shorter, and required man power and material is less, and is convenient to control absolute altitude and planeness at the bottom of cushion cap, can meet construction requirement.
For reaching above object, provided by the inventionly planting pile cofferdam platform integral construction method for lithostratigraphy low pile cap, comprising the following steps:
S1: simultaneously construct on lithostratigraphy hoisting platform and drilling platform, hoisting platform is positioned at around drilling platform; In the process of constructing hoisting platform and drilling platform, between hoisting platform and drilling platform, reserved and cofferdam construction passage, forwards S2 to;
S2: carry out cofferdam construction to drilling platform in cofferdam construction passage, meanwhile, drilling platform carries out pile foundation boring operation; When carrying out cofferdam construction, after the steel sheet pile needed for cofferdam being implanted lithostratigraphy by static-pressure pile planting machine, in cofferdam, carry out drawing water operation, excavator is hung in cofferdam and carry out anhydrous excavation operation.
On the basis of technique scheme, by static-pressure pile planting machine, the steel sheet pile needed for cofferdam is implanted in the process of lithostratigraphy in S2, high and the water level conditions according to steel sheet pile top mark, is welding cofferdam construction operating platform with the upper strata of the corresponding part of steel sheet pile below static-pressure pile planting machine; According to the height of steel sheet pile, at the lower floor's weldable steel sheet pile limiting platform with the corresponding part of steel sheet pile below static-pressure pile planting machine.
On the basis of technique scheme, the idiographic flow of hoisting platform of constructing in S1 is: by vibrating hammer after the inserted to play steel pipe pile of installation site, timely welded steel pipe pile connects system, forms overall stress system, at stress system top construction lifting stake top distribution beam and hoisting platform panel.
On the basis of technique scheme, in S1, the idiographic flow of construction drill platform is: inserted to play steel pipe pile within the scope of cushion cap, connects as one all steel pipe piles; At top construction steel pile tube top distribution beam and the drilling platform panel of steel pipe pile, reserve the installation site of main body drilled pile steel pile casting in work progress and steel pile casting guide frame is set in installation site; After steel pipe pile top distribution beam and drilling platform panel have been constructed, by steel pile casting guide frame construction steel casing; For preventing inclined rock base on the impact of steel pile casting verticality, do not consider that main body drilled pile steel pile casting bears working load.
On the basis of technique scheme, described in S1 between hoisting platform and drilling platform reserved with cofferdam construction passage after, further comprising the steps of: on cofferdam construction passage, to lay cofferdam platform panel, as cofferdam construction platform and drilling platform; In cofferdam construction passage, set up static-pressure pile planting machine described in S2 comprise the following steps: during erection static-pressure pile planting machine, remove the cofferdam platform panel of cofferdam construction platform corresponding part according to the decorating position of static-pressure pile planting machine.
On the basis of technique scheme, described in S1, between hoisting platform and drilling platform, idiographic flow that is reserved and cofferdam construction passage is: between hoisting platform and drilling platform, according to the type of static-pressure pile planting machine that need use and the size in cofferdam, reserved cofferdam construction passage.
On the basis of technique scheme, S2 is further comprising the steps of: after cofferdam construction completes, and repairs drilling platform.
Compared with prior art, the invention has the advantages that:
(1), after the present invention constructs hoisting platform and drilling platform, construction drill cofferdam in the cofferdam construction passage between hoisting platform and drilling platform, carries out anhydrous excavation operation in cofferdam.Compared with carrying out underwater demolition with low pile cap of constructing in prior art, underwater demolition is changed into anhydrous excavation operation by the present invention, and not only excavation area and side measure less, and required man power and material is less, and be convenient to control absolute altitude and planeness at the bottom of cushion cap, can construction requirement be met.
(2) the present invention carries out cofferdam construction to drilling platform on cofferdam construction platform, meanwhile, drilling platform carries out pile foundation boring operation; Construction is carried out in bore operation and cofferdam operation simultaneously can accelerate the construction period.
(3), when the present invention carries out cofferdam construction, cofferdam construction operating platform is being welded with the upper strata of the corresponding part of steel sheet pile below static-pressure pile planting machine, lower floor's weldable steel sheet pile limiting platform.Cofferdam construction operating platform and the steel sheet pile limiting platform of upper and lower two-layer layout take full advantage of platform space, avoid cross-operation, can not only accelerate construction period, and can save manpower.Meanwhile, cofferdam construction operating platform and steel sheet pile limiting platform can reduce the free height of steel sheet pile when static-pressure pile planting machine is constructed, and rocking when static-pressure pile planting machine drill is entered is controlled, and improve the operating efficiency of static-pressure pile planting machine.
Accompanying drawing explanation
Fig. 1 is the floor map of planting pile cofferdam platform integral construction method for lithostratigraphy low pile cap in the embodiment of the present invention;
Fig. 2 is the elevational schematic view of planting pile cofferdam platform integral construction method for lithostratigraphy low pile cap in the embodiment of the present invention.
In figure: 1-hoisting platform, 2-drilling platform, 3-cofferdam construction passage, 4-static-pressure pile planting machine, 5-cofferdam construction operating platform, 6-steel sheet pile limiting platform.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Shown in Figure 1, plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap in the embodiment of the present invention, comprise the following steps:
S1: simultaneously construct on lithostratigraphy hoisting platform 1 and drilling platform 2, hoisting platform 1 is positioned at drilling platform 2 around; In the process of constructing hoisting platform 1 and drilling platform 2, between hoisting platform 1 and drilling platform 2, reserved and cofferdam construction passage 3, cofferdam construction passage 3 is laid cofferdam platform panel, as cofferdam construction platform and drilling platform, forwards S2 to.
S2: carry out cofferdam construction to drilling platform 2 on cofferdam construction platform, meanwhile, drilling platform 2 carries out pile foundation boring operation.When carrying out cofferdam construction, in cofferdam construction passage 3, set up static-pressure pile planting machine 4, during erection, remove the cofferdam platform panel of cofferdam construction platform corresponding part according to the decorating position of static-pressure pile planting machine 4.After the steel sheet pile needed for cofferdam being implanted lithostratigraphy by static-pressure pile planting machine 4, steel sheet-pile cofferdam inner supporting structure is installed, after cofferdam construction completes, drilling platform 2 is repaired.In cofferdam, carry out drawing water operation, excavator is hung in cofferdam and carry out anhydrous excavation operation.
The idiographic flow of hoisting platform 1 of constructing in S1 is: by vibrating hammer after the inserted to play steel pipe pile of installation site, and timely welded steel pipe pile connects system, forms overall stress system, at stress system top construction lifting stake top distribution beam and hoisting platform panel.
In S1, the idiographic flow of construction drill platform 2 is: inserted to play steel pipe pile within the scope of cushion cap, connects as one all steel pipe piles, forms overall stool structure.At top construction steel pile tube top distribution beam and the drilling platform panel of steel pipe pile, reserve the installation site of main body drilled pile steel pile casting in work progress and steel pile casting guide frame is set in installation site.After steel pipe pile top distribution beam and drilling platform panel have been constructed, by steel pile casting guide frame construction steel casing; For preventing inclined rock base on the impact of steel pile casting verticality, do not consider that main body drilled pile steel pile casting bears working load.
In S1, between hoisting platform 1 and drilling platform 2, idiographic flow that is reserved and cofferdam construction passage 3 is: between hoisting platform 1 and drilling platform 2, according to the type of static-pressure pile planting machine 4 that need use and the size in cofferdam, reserved cofferdam construction passage 3.
Shown in Figure 2, by static-pressure pile planting machine 4, the steel sheet pile needed for cofferdam is implanted in the process of lithostratigraphy in S2, according to steel sheet pile top mark high (namely cofferdam top mark is high) and water level conditions, welding cofferdam construction operating platform 5 with the upper strata of the corresponding part of steel sheet pile below static-pressure pile planting machine 4; According to the height of steel sheet pile, at the lower floor's weldable steel sheet pile limiting platform 6 with the corresponding part of steel sheet pile below static-pressure pile planting machine 4.
Cofferdam construction operating platform 5 and steel sheet pile limiting platform 6 can reduce the free height of steel sheet pile when static-pressure pile planting machine 4 is constructed, and rocking when static-pressure pile planting machine 4 is crept into is controlled, and improve the operating efficiency of static-pressure pile planting machine 4.
The present invention is not limited to above-mentioned embodiment, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. plant a pile cofferdam platform integral construction method for lithostratigraphy low pile cap, it is characterized in that, comprise the following steps:
S1: simultaneously construct on lithostratigraphy hoisting platform (1) and drilling platform (2), hoisting platform (1) is positioned at drilling platform (2) around; In the process of constructing hoisting platform (1) and drilling platform (2), between hoisting platform (1) and drilling platform (2), reserved and cofferdam construction passage (3), forwards S2 to;
S2: carry out cofferdam construction to drilling platform (2) in cofferdam construction passage (3), meanwhile, drilling platform (2) carries out pile foundation boring operation; When carrying out cofferdam construction, after the steel sheet pile needed for cofferdam being implanted lithostratigraphy by static-pressure pile planting machine (4), in cofferdam, carry out drawing water operation, excavator is hung in cofferdam and carry out anhydrous excavation operation.
2. as claimed in claim 1 plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap, it is characterized in that: by static-pressure pile planting machine (4), the steel sheet pile needed for cofferdam is implanted in the process of lithostratigraphy in S2, high and the water level conditions according to steel sheet pile top mark, welds cofferdam construction operating platform (5) on the upper strata of the corresponding part of steel sheet pile with static-pressure pile planting machine (4) below; According to the height of steel sheet pile, in lower floor's weldable steel sheet pile limiting platform (6) of the corresponding part of steel sheet pile with static-pressure pile planting machine (4) below.
3. as claimed in claim 1 plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap, it is characterized in that: the idiographic flow of hoisting platform of constructing in S1 (1) is: by vibrating hammer after the inserted to play steel pipe pile of installation site, timely welded steel pipe pile connects system, form overall stress system, at stress system top construction lifting stake top distribution beam and hoisting platform panel.
4. as claimed in claim 1 plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap, it is characterized in that: in S1, the idiographic flow of construction drill platform (2) is: inserted to play steel pipe pile within the scope of cushion cap, connects as one all steel pipe piles; At top construction steel pile tube top distribution beam and the drilling platform panel of steel pipe pile, reserve the installation site of main body drilled pile steel pile casting in work progress and steel pile casting guide frame is set in installation site; After steel pipe pile top distribution beam and drilling platform panel have been constructed, by steel pile casting guide frame construction steel casing; For preventing inclined rock base on the impact of steel pile casting verticality, do not consider that main body drilled pile steel pile casting bears working load.
5. as claimed in claim 1 plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap, it is characterized in that: described in S1 between hoisting platform (1) and drilling platform (2) reserved with cofferdam construction passage (3) after, further comprising the steps of: at cofferdam construction passage (3) upper laying cofferdam platform panel, as cofferdam construction platform and drilling platform; Described in S2, in cofferdam construction passage (3), erection static-pressure pile planting machine (4) comprises the following steps: during erection static-pressure pile planting machine (4), removes the cofferdam platform panel of cofferdam construction platform corresponding part according to the decorating position of static-pressure pile planting machine (4).
6. as described in any one of claim 1 to 5, plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap, it is characterized in that: described in S1, between hoisting platform (1) and drilling platform (2), idiographic flow that is reserved and cofferdam construction passage (3) is: between hoisting platform (1) and drilling platform (2), according to the type of static-pressure pile planting machine (4) that need use and the size in cofferdam, reserved cofferdam construction passage (3).
7. as described in any one of claim 1 to 5, plant pile cofferdam platform integral construction method for lithostratigraphy low pile cap, it is characterized in that: S2 is further comprising the steps of: after cofferdam construction completes, drilling platform (2) is repaired.
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| CN201510735718.XA CN105421474B (en) | 2015-11-03 | 2015-11-03 | For the plant pile cofferdam platform integral construction method of lithostratigraphy low pile cap |
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| CN201510735718.XA CN105421474B (en) | 2015-11-03 | 2015-11-03 | For the plant pile cofferdam platform integral construction method of lithostratigraphy low pile cap |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839907A (en) * | 2017-02-07 | 2017-06-13 | 中铁二十三局集团第三工程有限公司 | Underwater demolition construction method |
| CN107905244A (en) * | 2017-12-12 | 2018-04-13 | 中交公局第二工程有限公司 | A kind of three side combined cofferdam construction method of offshore region |
| CN109707307A (en) * | 2018-12-11 | 2019-05-03 | 中铁五局集团贵州工程有限公司 | At the construction method of polygon annular groove on a kind of rock stratum under water |
| CN112609591A (en) * | 2020-12-22 | 2021-04-06 | 中铁建大桥工程局集团第一工程有限公司 | Construction method for deep-water shallow-covering-layer fully-socketed bridge foundation |
| CN113737790A (en) * | 2021-06-28 | 2021-12-03 | 中交第二航务工程局有限公司 | Bridge pile and steel sheet pile synchronous construction method |
| CN114411780A (en) * | 2021-12-29 | 2022-04-29 | 中铁十九局集团有限公司 | Construction method of Larsen steel sheet pile cofferdam of static pressure pile planting machine for deep water rock stratum foundation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429761A (en) * | 2008-11-18 | 2009-05-13 | 中铁大桥局集团第二工程有限公司 | Deep sea bare rock pier protection barrel, positioning pile, underwater cofferdam integrated platform and construction method |
| CN103015446A (en) * | 2012-08-10 | 2013-04-03 | 中铁大桥局股份有限公司 | Method for constructing bearing platform on deepwater and rigid impermeable layer |
| JP5510692B1 (en) * | 2013-09-04 | 2014-06-04 | 東洋建設株式会社 | Steel temporary deadline installation method and low-air mobile crane carrier used therefor |
| CN103882881A (en) * | 2014-04-11 | 2014-06-25 | 山东黄河工程集团有限公司 | Underwater construction method for bearing platform deeply embedded in rock |
-
2015
- 2015-11-03 CN CN201510735718.XA patent/CN105421474B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429761A (en) * | 2008-11-18 | 2009-05-13 | 中铁大桥局集团第二工程有限公司 | Deep sea bare rock pier protection barrel, positioning pile, underwater cofferdam integrated platform and construction method |
| CN103015446A (en) * | 2012-08-10 | 2013-04-03 | 中铁大桥局股份有限公司 | Method for constructing bearing platform on deepwater and rigid impermeable layer |
| JP5510692B1 (en) * | 2013-09-04 | 2014-06-04 | 東洋建設株式会社 | Steel temporary deadline installation method and low-air mobile crane carrier used therefor |
| CN103882881A (en) * | 2014-04-11 | 2014-06-25 | 山东黄河工程集团有限公司 | Underwater construction method for bearing platform deeply embedded in rock |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839907A (en) * | 2017-02-07 | 2017-06-13 | 中铁二十三局集团第三工程有限公司 | Underwater demolition construction method |
| CN107905244A (en) * | 2017-12-12 | 2018-04-13 | 中交公局第二工程有限公司 | A kind of three side combined cofferdam construction method of offshore region |
| CN109707307A (en) * | 2018-12-11 | 2019-05-03 | 中铁五局集团贵州工程有限公司 | At the construction method of polygon annular groove on a kind of rock stratum under water |
| CN112609591A (en) * | 2020-12-22 | 2021-04-06 | 中铁建大桥工程局集团第一工程有限公司 | Construction method for deep-water shallow-covering-layer fully-socketed bridge foundation |
| CN113737790A (en) * | 2021-06-28 | 2021-12-03 | 中交第二航务工程局有限公司 | Bridge pile and steel sheet pile synchronous construction method |
| CN113737790B (en) * | 2021-06-28 | 2023-02-24 | 中交第二航务工程局有限公司 | Bridge pile and steel sheet pile synchronous construction method |
| CN114411780A (en) * | 2021-12-29 | 2022-04-29 | 中铁十九局集团有限公司 | Construction method of Larsen steel sheet pile cofferdam of static pressure pile planting machine for deep water rock stratum foundation |
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| CN105421474B (en) | 2018-07-03 |
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Inventor after: Han Bo Inventor after: Zhang Jinhao Inventor after: Yang Jie Inventor after: Wang Xiangqiao Inventor after: Zhang Zhiyong Inventor after: Li Yanzhe Inventor after: Zhou Yanfei Inventor after: Tang Ming Inventor after: Zhang Hongqiang Inventor after: Zhang Chaoliang Inventor after: Quan Jianxi Inventor after: Wu Yanhui Inventor after: Zhang Shuai Inventor before: Han Bo Inventor before: Zhang Jinhao Inventor before: Yang Jie Inventor before: Wang Xiangqiao Inventor before: Zhang Zhiyong Inventor before: Li Yanzhe Inventor before: Zhou Yanfei Inventor before: Tang Ming Inventor before: Zhang Hongqiang Inventor before: Zhang Chaoliang Inventor before: Quan Jianxi Inventor before: Wu Yanhui Inventor before: Zhang Shuai |
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