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Construction method of caisson in underground space of muddy soil

A technology for underground space and silty soil, applied in caisson, infrastructure engineering, construction, etc., can solve the problems of difficult to control the subsidence speed of caisson, easy to occur sudden subsidence, etc., to achieve stable subsidence, reduce processes, and speed up construction effect of speed

Active Publication Date: 2021-01-19
GEOTECHN TECH
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Problems solved by technology

[0003] The invention provides a caisson construction method in the underground space of silty soil, which solves the problem that the sinking speed of the caisson is not easy to control and prone to sudden sinking when the existing caisson construction method is constructed in silt soil

Method used

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  • Construction method of caisson in underground space of muddy soil
  • Construction method of caisson in underground space of muddy soil
  • Construction method of caisson in underground space of muddy soil

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] see figure 1 and figure 2 , a caisson construction method in the underground space of silty soil parts, the first step is to pre-embed the blade foot 2 made of steel plates on the ground where the caisson needs to be formed, and the cross section of the blade foot is an inverted triangle. Then the first caisson 1 is formed on the blade foot, and the first caisson is located directly above the blade foot. The first caisson includes a reinforced concrete structure caisson wall 11 and several caissons located in the space surrounded by the caisson wall. Inner wall 12, the inner wall isolates a number of wells 13 extending up and down in the space enclosed by the caisson wall; the lower ends of the caisson wall and the inner wall are provided with the blade feet. , each side wall of the caisson wall (specifically 4 side walls in this embodiment) i...

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Abstract

The invention relates to a mucky soil position underground space open caisson construction method. The method comprises the steps that 1, a first open caisson section provided with a plurality of grids is manufactured; 2, hydraulic valves are installed in the grids; 3, the first open caisson section sinks under action of the self weight; 4, the opening quantity of the hydraulic valves in the firstopen caisson section is controlled so that the sinking speed of an open caisson can be controlled, and sudden sinking of the open caisson is prevented, and if the open caisson inclines, deviation rectifying is conducted through the hydraulic valves; and 5, after the first open caisson section sinks in place, all the hydraulic valves are closed, a second open caisson section is formed at the top of the first open caisson section, after the second open caisson section sinks in place, all the hydraulic valves are closed, a third open caisson section is installed at the top of the second open caisson section, then, in the same mode, manufacturing and sinking of all open caisson sections are completed, and accordingly, an open caisson is formed. Through the method, the problems that accordingto an existing open caisson construction method, when construction is conducted in mucky soil, the sinking speed of the open caisson is difficult to control, and sudden sinking is prone to occurring are solved.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a caisson construction method in the underground space of muddy soil. Background technique [0002] Ordinary caisson construction method, first make a caisson on the surface, and then under the enclosure of the well wall, continuously excavate soil from the well to make the caisson gradually sink under the action of its own weight, and then seal the bottom after reaching the predetermined design elevation , to build the internal structure. However, when the construction soil is relatively thick silt soil, the caisson mainly uses its own weight for subsidence construction, and appropriate control measures need to be taken to prevent problems such as sudden subsidence and offset. Construction in silt soil, adopting the undrained sinking method, the sinking speed of the caisson is difficult to control, and problems of sudden sinking and eccentricity are prone to occur. In add...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D23/02E02D23/08
CPCE02D23/02E02D23/08
Inventor 潘金龙杜晓飞李宝学叶剑平卢灿宏
Owner GEOTECHN TECH
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