Column supported underground continuous wall

Abstract

The invention relates to a post underground continuous wall which is constructed via basement reverse method. It comprises: the underground wall along the basement, which is formed by shallow wall and deep wall, while the shallow is at the upper part of underground continuous wall, with general structure to form the closed wall as baffling sand, water and filtration; and said deep wall is under the shallow wall which is a post support wall whose rock embedded sections are distantly arranged, to support the shallow wall and be used as the vertical support element, to effectively control the vertical distortion of upper part pf underground continuous wall. The shallow wall can reduce the height of underground continuous wall and the deep wall can reduce the number of rock-embedded sections with high cost and hard construction. The invention can reduce the cost and shorten the construction time.

Description

technical field [0001] The invention relates to an underground continuous wall of a building, in particular to a column-supported underground continuous wall constructed by a basement inverse method. Background technique [0002] The underground diaphragm wall of a building is a foundation pit support system of a water-retaining and soil-retaining structure applied to the construction of the reverse-method basement structure. One of the most commonly used support techniques. [0003] In the prior art, the multi-storey basement and other multi-storey underground structures of high-rise buildings are often constructed by the reverse method, that is, the floor structure of the basement, including beams, slabs, columns, etc., and the external wall structure are used as the level of the foundation pit envelope. For the support system and the enclosure system, the reverse method takes the base layer as the boundary, the basement of each layer below the base layer is constructed f...

AI Technical Summary

Problems solved by technology

[0005] (1) Since the construction of the underground diaphragm wall requires large-scale special machinery, the groove section is generally formed by drilling and punching, and the wall is protected by mud, so the construction cost is relatively high

[0006] (2) It is difficult for the diaphragm wall to excavate into grooves in hard soil and rock layers, especially when the rock layers are buried shallowly, that is, when the geological conditions are good, and in the case of a multi-layer basement, the increased cost of entering the rock is very large. Larger increase in project cost

[0007] (3) Due to the close connection between the underground diaphragm wall and the reverse method technology, the high cost of the diaphragm wall directly affects the application and promotion of the basement reverse method technology. How to ensure the safety of the foundation pit project can shorten the construction period and at the same time control the project cost , has become a key issue affecting the development of reverse technology

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