Construction structure and construction method for open caisson

Abstract

The invention provides a construction structure and a construction method for an open caisson. According to the steel pipe column and cast-in-place pile guide type controllable construction structurefor the open caisson, the top part of each two-way jack is connected with a pipe joint column, steel brackets are erected on the pipe joint columns and serve as important guide components in the sinking process of the open caisson, when sinking of the open caisson is needed, soil in a foundation pit in space defined by steel pipe columns can be continuously excavated, meanwhile, the steel bracketsA erected at the bottommost parts on the pipe joint columns are disassembled, and then the open caisson can sink to the position where the steel brackets B on the upper parts of the steel brackets Aare erected on the pipe joint columns by virtue of the gravity of the open caisson; and in addition, in the sinking process of the open caisson, if inclination occurs, the height of the pipe joint columns can be adjusted through the jacks, so that the vertical state is always kept in the sinking process of the open caisson, and therefore the perpendicularity and the stability in the sinking process of the open caisson are effectively controlled, construction is facilitated, the construction risk is reduced, and cost is reduced.

Description

technical field [0001] The invention relates to a caisson construction structure and a construction method thereof. Background technique [0002] Caisson is a construction technique for building deep foundations and underground structures. During construction, a reinforced concrete well body with openings is first made on the ground or in the foundation pit. After it reaches the specified strength, the soil is excavated and transported out in layers inside the well body. With the excavation and soil surface lowering, the caisson well body is Overcome the frictional resistance between the soil wall and the counterforce of the blade foot with the help of self-weight or other measures, and continue to sink until the design elevation is in place, and then seal the back. [0003] The advantages of caisson construction technology are: deep (up to 50 meters) underground works can be constructed in a narrow site, and the impact on the surrounding environment is small; construction ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a caisson construction structure and its construction method, which can solve the problems of low verticality control accuracy, inclination, sudden subsidence when encountering extremely soft soil layers, and complicated operation platform erection in caisson sinking engineering

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