A kind of underwater platform construction method
A construction method and construction preparation technology, applied in the direction of basic structure engineering, construction, etc., can solve the problems such as the difficulty of water sealing in the steel sleeve assembly gap, increase the construction cost, and prolong the construction period, so as to optimize the construction plan, reduce manpower, and protect the environment. Effect
Active Publication Date: 2017-02-08
HANGZHOU HUANENG SAFETY ENG POLYTRON TECH CO LTD
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Problems solved by technology
However, the entire cap is below the water surface during construction, and the cap is relatively large in size. Steel casings are generally used for construction. Due to the high water pressure in deep water operations, it is difficult to stop water in the gaps assembled by steel casings. In order to overcome the buoyancy of water, steel casings The amount of steel input into the box is large, the recovery rate is low, and there are many diving operations, and the construction period is prolonged and the construction cost is increased.
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Embodiment Construction
[0036] The invention relates to a construction method of an underwater cap, the technological principle of which is to realize the manufacture and reinforcement of the underwater cap through processes such as measurement and lofting, foundation pit excavation, underwater mud suction, cushion construction, cap construction and the like.
[0037] This construction method requires the following materials:
[0038] 1. C30 concrete (sand and gravel, cement, fly ash, admixture), talcum powder, grade II steel bar, mixed oil.
[0039] 2. Machinery and equipment: concrete transport vehicles, electric welding machines, pump trucks, cranes, vibratory hammers, excavators, ramming machines, air compressors, high-pressure water guns, total stations, levels, water pumps, steel bending machines, pile drivers, water Lower suction dredge, cooling pipe, conduit, storage hopper.
[0040] This construction method includes the following steps (such as Figure 1 to Figure 4 shown):
[0041] (1) C...
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The invention discloses an underwater bearing platform construction method. The underwater bearing platform construction method includes the following steps of (1) construction preparation, (2) steel plate coffering, (3) water pumping, (4) staking out in survey, (5) excavation of foundation pit, (6) pile head removing by chiseling, (7) underwater slush pumping, (8) cushion construction, (9) bearing platform construction, (10) concrete pouring, (11) concrete maintaining and form removal and (12) cofferdam removal. By means of the underwater bearing platform construction method, a bearing platform is stable and firm, meanwhile, a construction scheme is optimized, the construction period is further shortened, manpower and material resources are greatly reduced, economic benefits are remarkable, flying dust can not occur during construction, environment protection can be achieved, the accuracy during construction is effectively improved by the aid of secondary setting out of the bearing platform, the deviation is reduced, construction qualities are improved, and a whole pier column is stable.
Description
technical field [0001] The invention relates to a construction method of an underwater bearing platform. Background technique [0002] In recent years, the large-diameter pillar-type bridge piers that have been popularized and applied in bridge construction mostly adopt the form of one pile and one column. The water level is lower than the normal water level. If the caps are all above the construction water level during construction, the construction can be carried out according to the conventional method; if a part of the caps is underwater, the steel casing method is usually used for construction. However, the entire cap is below the water surface during construction, and the cap is relatively large in size. Steel casings are generally used for construction. Due to the high water pressure in deep water operations, it is difficult to stop water in the gaps assembled by steel casings. In order to overcome the buoyancy of water, steel casings The amount of steel input into t...
Claims
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IPC IPC(8): E02D27/14
Inventor 蔡伟姜骏骏刘学应
Owner HANGZHOU HUANENG SAFETY ENG POLYTRON TECH CO LTD