Section steel-concrete combined underground continuous wall structure and construction method thereof

Abstract

The invention discloses a section steel-concrete combined underground continuous wall structure and a construction method thereof. The section steel-concrete combined underground continuous wall structure consists of a reinforced concrete underground continuous wall with reserved holes, section steel and grouting solidification retainers. A construction method of a basement based on a combined underground continuous wall comprises the following steps of placing a precast concrete underground continuous wall on site; inserting the section steel into the reserved holes; carrying out grouting ingaps for filling; carrying out basement construction; and after the completion of the basement construction, pulling out the section steel for recovery, and grouting for filling. According to the section steel-concrete combined underground continuous wall structure, the underground continuous wall is prefabricated, the section steel is inserted into the reserved holes after the underground continuous wall is placed at a proper position, the section steel is recovered after the completion of the basement construction, a concrete part is continually used as a permanent structure together with abasement outer wall or used as the basement outer wall after grouting treatment, and no rigid barriers exist under the basement after recovery of the section steel, so that resources are saved, and conditions are reserved for 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,...

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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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