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Underground diaphragm wall construction method

A technology of underground diaphragm wall and construction method, applied in artificial islands, sheet pile walls, water conservancy projects, etc., can solve problems such as inability to completely solve the problem of water leakage, and achieve the effect of solving the problem of water leakage

Active Publication Date: 2015-07-22
SHANGHAI YUANFANG GROUNDWORK ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in most cases, no matter how good the joint structure is, the water leakage problem cannot be completely solved

Method used

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] The present invention is illustrated by setting an underground continuous wall around the foundation pit as an example. A method for constructing an underground diaphragm wall, comprising the steps of:

[0032] 1), such as figure 1 As shown, a groove 10 is formed; a groove 10 is formed at a position where an underground continuous wall needs to be installed, and the groove 10 has groove walls 11 on both sides. In this step, a special trenching machine is used for construction, and it is equipped with wall protection mud.

[0033] 2), such as figure 1 , figure 2 As shown, the joint 20 and the steel bar 30 are hung and placed in the groove 10 . Joints 20 are arranged at one or both ends of the reinforcement cage 30 , depending on the shape of the underground continuous wall and the position of the reinforcement cage 30 . If the underground continuous wall...

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Abstract

The invention discloses an underground diaphragm wall construction method. The underground diaphragm wall construction method is characterized by comprising the steps that 1, grooving is performed, wherein a groove is provided with groove walls; 2, connectors and steel reinforcement cages are placed in the groove, and the connectors are arranged at one end or the two ends of each steel reinforcement cage; 3, concrete is filled, the concrete is wrapped around steel reinforcement cages, and an underground diaphragm wall is formed after the concrete is solidified; isolating devices are arranged between all or parts of the steel reinforcement cages and the groove walls of the groove, and the two ends of each isolating device are connected to the ends of the steel reinforcement cages or the connectors respectively; the isolating devices seal at least one side of each steel reinforcement cage and is used for stopping the concrete filled in one steel reinforcement cage to perform detour flow from the side to the other steel reinforcement cages or the concrete poured in the adjacent steel reinforcement cage to perform the detour flow to the section of steel reinforcement cage. According to the underground diaphragm wall construction method, the wall is arranged outside the steel reinforcement cages in an isolated mode, the detour flow when the concrete is poured in the section of steel reinforcement cage can be effectively prevented, the concrete poured in the section is prevented from performing the detour flow to another adjacent section of steel reinforcement cage, the concrete respectively poured in the adjacent steel reinforcement cages can not make contact, a seam can not be generated, and therefore the water leakage problem is solved.

Description

technical field [0001] The invention relates to a construction method of an underground continuous wall. Background technique [0002] The underground diaphragm wall is a foundation project. During construction, a trenching machine is used on the ground to excavate a narrow and long deep trench along the peripheral axis of the deep excavation project under the condition of mud retaining walls. After clearing the tank, hang the reinforcement cage in the tank, and then use the conduit method to pour underwater concrete to form a unit tank section. This is done section by section, and a continuous reinforced concrete wall is built underground as a water interception, anti-seepage, load-bearing, and water-retaining structure. The underground diaphragm wall is suitable for pumping stations, pools; building foundation pits; underground oil depots and warehouses; municipal pipe trenches and culverts; shafts of shield tunneling and other projects; various deep foundations and pile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/02
CPCE02D5/20
Inventor 刘忠池梁艳文
Owner SHANGHAI YUANFANG GROUNDWORK ENG
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