Underground diaphragm wall and construction method thereof

Abstract

The invention discloses an underground diaphragm wall. The underground diaphragm wall comprises a barrier pile and wall bodies located on the two sides of the barrier pile. The barrier pile serves as a connector for the wall bodies on the two sides of the barrier pile. The connection positions of the wall bodies on the two sides and the barrier pile and the outer side of the barrier pile are provided with a plurality of high-pressure jet grouting piles. Supporting steel bars are arranged in the high-pressure jet grouting piles on the outer side of the barrier pile. The barrier pile during underground diaphragm wall construction serves as the connector, the plane position of the underground diaphragm wall does not need to be moved, the barrier pile does not need to be pulled out, and high cost and project delay caused by pile pulling are avoided under the situation that the building area and space usage are not influenced; and meanwhile, by means of the construction method, the waterproof performance and the protection performance of the underground diaphragm wall cannot be influenced, and the construction quality is ensured.

Description

technical field [0001] The invention relates to a deep foundation pit project of a construction project, in particular to a method for treating obstacle piles encountered in the construction of an underground continuous wall. Background technique [0002] With the continuous development of our country's economy and the process of urbanization, the land use in large and medium-sized cities is becoming increasingly tense. Old buildings are demolished and new buildings are constructed. encountered some unforeseen circumstances. [0003] During the construction of the underground diaphragm wall in the foundation pit project, obstacle piles left over from the original site are often encountered. There are two conventional processing methods. One is to move the plane position of the underground diaphragm wall, which often affects the construction area. and space use. For some projects with high building area and space use requirements, another method is often used to remove the o...

AI Technical Summary

Problems solved by technology

[0003] During the construction of the underground diaphragm wall in the foundation pit project, obstacle piles left over from the original site are often encountered. There are two conventional processing methods. One is to move the plane position of the underground diaphragm wall, which often affects the construction area. and space use. For some projects with high building area and space use requirements, another method is often used to remove the obstacle piles. The removal of the obstacle piles requires the use of large mechanical equipment, which costs a lot, and the obstacle piles It takes a long time to pull out, which will have a certain impact on the construction period

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