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A steel cofferdam caulking treatment method in the construction process of a sea-crossing bridge

A treatment method and a technology of the construction process, which are applied in the fields of construction, infrastructure engineering, climate change adaptation, etc., can solve problems such as difficulty in waterproofing and sealing foundation pit protection structures, unsatisfactory practicability, and rubber strips being washed away, etc., so as to avoid disadvantages Influence, reduce drilling resistance, ensure the effect of water blocking effect

Active Publication Date: 2022-07-05
CHINA RAILWAY 20 BUREAU GRP CORP LTD
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  • Claims
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Problems solved by technology

[0005] However, further studies have shown that for construction scenarios such as bay tidal flat areas, they usually have the characteristics of abundant groundwater and obvious fluctuations in tidal water. In addition, as the buried depth increases, the lower water pressure is extremely high, and the protection structure of the foundation pit is getting deeper and deeper. The more difficult it is to block waterproofing at the bottom, the rubber strips grouted or filled in the above method will often be washed away by the water flow, the practicability is still not ideal and there are problems that the process is difficult to control

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  • A steel cofferdam caulking treatment method in the construction process of a sea-crossing bridge
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  • A steel cofferdam caulking treatment method in the construction process of a sea-crossing bridge

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[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0031] figure 1 It is a schematic diagram for demonstrating the connection when the locking steel pipe pile is water-proof and plugged, figure 2 It is a schematic diagram showing the positional relationship between the yin and yang locks of the lock steel pipe pile and the elastomer water barrier. The following will combine figure 1 and figure 2 , to specifically explain the entire processing process according to the present invention.

[0032] First, on the opposite side of the outer wall of the steel pipe pile body, such as a threaded welded pipe, an open-type steel pipe as the fem...

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Abstract

The invention belongs to the technical field related to bridge construction, and discloses a method for caulking a steel cofferdam during the construction of a sea-crossing bridge. The method comprises: respectively welding a female lock and a male lock on the main body of a steel pipe pile, and making The outer end of the female lock is processed into a pointed shape; a layer of viscous elastomer water-repellent slurry is arranged on the inner wall of the female lock by means of mold injection; Pipe pile cofferdam; concrete bottom sealing operation for foundation pit, and sealing treatment for other possible leakage. The invention can not only significantly improve the water-stopping effect of the steel pipe pile cofferdam, but also facilitate quality control and high-efficiency process operation, so that the water-stopping requirements of the cofferdam during the construction of the sea-crossing bridge can be better met.

Description

technical field [0001] The invention belongs to the technical field related to bridge construction, and more particularly relates to a method for caulking a steel cofferdam during the construction of a sea-crossing bridge. Background technique [0002] As a temporary protective structure widely used in bridge foundation construction, cofferdams include earth-rock cofferdams, double-wall steel-jacketed box cofferdams, steel sheet pile cofferdams, steel pipe pile cofferdams, reinforced concrete caisson, etc. . Among them, the steel pipe pile cofferdam has received more and more attention in recent years due to its stable structure, strong adaptability and high recovery rate. [0003] The water-stop effect of the steel pipe pile cofferdam directly affects the efficiency and even the quality of the cap construction. The existing steel pipe pile cofferdams mostly use CT-type locks to connect with each other. In order to ensure the water-stop effect, the conventional treatment m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04E02D5/04E02D5/06
CPCE02D19/04E02D5/04E02D5/06Y02A10/11
Inventor 杨星智屈家奎李栋任高峰仲维玲王锋李宏强张华林雷建明王维军石新朋刘杰唐学杰杨泽杨凯
Owner CHINA RAILWAY 20 BUREAU GRP CORP LTD
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