Buoy type deepwater single-wall steel cofferdam construction method
A construction method, the technology of steel cofferdam, applied in the direction of basic structure engineering, construction, etc., can solve problems such as rectification of subsidence, and achieve the effect of reducing workload, simple construction steps and reasonable design
Inactive Publication Date: 2014-07-23
湖南顺天建设集团有限公司
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Problems solved by technology
[0003] In view of the unfavorable conditions such as lack of medium and large power transport ships in deep water areas, the present invention provides a construction method of deep water single-wall steel cofferdam buoy method, which can effectively solve the problems of single-wall steel cofferdam assembly site, equipment transportation and single-wall steel cofferdam Problems encountered such as sinking deviation correction when positioning sinking
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[0054] The present invention is described in further detail in conjunction with accompanying drawing now.
[0055] as attached Figures 1 to 6 Shown, a kind of construction method of deepwater single-wall steel cofferdam buoy method, this construction method comprises the following steps:
[0056] Step 1. Single-wall steel cofferdam design: According to the stress characteristics of the single-wall steel cofferdam construction process, it can be divided into two stages: the bottom concrete construction stage and the stage of pumping water in the single-wall steel cofferdam to the maximum water level difference inside and outside the single-wall steel cofferdam. The calculation content includes: lateral force calculation; panel, vertical support and horizontal internal support design; back cover concrete thickness design.
[0057] Step 2. Steel buoy and counterweight design: according to the buoyancy F of the steel buoy 浮 Greater than the sum of steel cofferdam weight and buo...
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The invention discloses a buoy type deepwater single-wall steel cofferdam construction method which comprises the steps of (1) design of a single-wall steel cofferdam, (2) design of a steel buoy and a balance weight, (3) manufacturing and water testing of the steel buoy, (4) manufacturing and assembly of the single-wall steel cofferdam, (5) diving floating transportation of the single-wall steel cofferdam, (6) positioning and sinking of the single-wall steel cofferdam, (7) foundation clearing and bottom sealing of the single-wall steel cofferdam, (8) installation of an inner supporting framework of the single-wall steel cofferdam, (9) dewatering and leaking stoppage, and (10) dismantling of the single-wall steel cofferdam. The method can effective solve the problems of the assembly site of the single-wall steel cofferdam, equipment transportation, sinking deviation rectification during positioning and sinking of the single-wall steel cofferdam.
Description
technical field [0001] The invention relates to the technical field of cofferdam construction, in particular to a construction method of a deep-water single-wall steel cofferdam buoy method. Background technique [0002] Under the condition of water depth of 6-10 meters, when constructing the bridge foundation, the economic index obtained by using single-wall steel cofferdam is better, but in the river section where there are no large and medium-sized power transport ships, it is necessary to solve the problem of single-wall steel cofferdam Issues such as assembly site, equipment transportation, and sinking deviation correction when the single-wall steel cofferdam is positioned and sinking. Contents of the invention [0003] In view of the unfavorable conditions such as lack of medium and large power transport ships in deep water areas, the present invention provides a construction method of deep water single-wall steel cofferdam buoy method, which can effectively solve th...
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IPC IPC(8): E02D19/04E02D15/08
Inventor 蔡军陈方红康慧文
Owner 湖南顺天建设集团有限公司