Prefabricated pretensioned prestressed underground continuous wall and construction method thereof

Abstract

The invention discloses a prefabricated pretensioned prestressed underground continuous wall and a construction method thereof. A pretensioned reinforcement is arranged in an underground continuous wall component by full length but not tensioned by full length; and prestress is only applied in a higher tension area, so that the underground continuous wall serving as an envelope enclosure facilitates to exert an advantageous prestress effect under complex support exchange working conditions of a support and a basement floor. Meanwhile, the prefabricated underground continuous wall component adopted by the prefabricated pretensioned prestressed underground continuous wall is assembled in situ, so that the labor cost is greatly reduced while materials are saved, the better construction quality and speed are obtained with lower cost, such advantages as economy, simplicity and durability are achieved, and the application value and the popularization value are higher. The pretensioned prestress application can adopt a straight pulling mode, so that holes can be formed in the section of the underground continuous wall component to save the materials. In sum, the prefabricated pretensioned prestressed underground continuous wall has the advantages of high bearing capacity, high rigidity, high cracking resistance and low steel consumption and concrete consumption.

Description

technical field [0001] The invention relates to a prefabricated pre-tensioned prestressed underground diaphragm wall with high bearing capacity, high rigidity, strong crack resistance, less steel and less concrete, and a construction method thereof, which is especially suitable for the prefabricated underground diaphragm wall as foundation pit enclosure Tension treatment for protection and basement exterior walls. Background technique [0002] There are many problems in the conventional underground diaphragm wall (hereinafter referred to as the ground connection wall). For example, it is easy to cause irregular water seepage on the wall surface, the flatness of the wall surface is difficult to control, and the joints of the two ground connection walls are prone to water seepage, so they cannot be directly used as the basement exterior wall. , Higher engineering costs, etc. In comparison, the prefabricated prestressed underground diaphragm wall has the following advantages: ...

AI Technical Summary

Problems solved by technology

[0002] There are many problems in the conventional underground diaphragm wall (hereinafter referred to as the ground connection wall). For example, it is easy to cause irregular water seepage on the wall surface, the flatness of the wall surface is difficult to control, and the joints of the two ground connection walls are prone to water seepage, so they cannot be directly used as the basement exterior wall. , higher engineering costs, etc.

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