Sectional Steel and Concrete Combined Underground Diaphragm Wall Structure and Its Construction Method

Abstract

The invention discloses a section steel and concrete combined underground diaphragm wall structure and a construction method thereof. The section steel and concrete combined underground diaphragm wall consists of three parts: a reinforced concrete underground diaphragm wall with reserved holes, section steel, and a grouting solidification retaining ring. The basement construction steps based on the combined underground diaphragm wall are as follows: lower the prefabricated concrete underground diaphragm wall on site, insert section steel in the reserved hole, fill the gap with grouting, basement construction, remove the recovered section steel and fill it with grout after the basement construction is completed. The underground continuous wall of the present invention is prefabricated. After the ground continuous wall is placed in place, section steel is inserted into the reserved cavity. After the construction of the basement structure is completed, the section steel is recycled. The outer wall of the basement is used as a permanent structure. After the section steel is recycled, there will be no rigid obstacles below the basement, which not only saves resources, but also reserves conditions for the subsequent development of deep underground space.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a low-cost recyclable section steel combined section steel and concrete underground continuous wall structure and a construction method thereof, which can meet the requirements of foundation pit overall stability, pit bottom uplift and anti-overturning. Background technique [0002] When designing the underground diaphragm wall, in order to meet the requirements of the overall stability of the foundation pit, the uplift of the pit bottom and the anti-overturning requirements, the current common practice is to penetrate the underground diaphragm wall to a certain depth below the basement floor. After the construction of the underground structure is completed, the underground below the basement floor The continuous wall is left directly in the ground, and the extended part loses its original use function, thus causing a certain degree of waste; in addition,...

AI Technical Summary

Problems solved by technology

[0002] When designing the underground diaphragm wall, in order to meet the requirements of the overall stability of the foundation pit, the uplift of the pit bottom and the anti-overturning requirements, the current common practice is to penetrate the underground diaphragm wall to a certain depth below the basement floor. After the construction of the underground structure is completed, the underground below the basement floor The continuous wall is left directly in the ground, and the extended part loses its original use function, thus causing a certain degree of waste; in addition, the part below the floor is usually regarded as an obstacle, which is permanently buried under the basement, affecting the follow-up Development of Deep Underground Spaces

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