Underground structure outer wall superposed wall adopting HCMW construction method and construction method thereof

Abstract

The invention discloses an underground structure outer wall superposed wall adopting the HCMW construction method. The underground structure outer wall superposed wall adopting the HCMW construction method comprises a cement-soil mixed pile wall, a levelling course and an underground structure outer wall. The cement-soil mixed pile wall comprises multiple cement-soil mixed piles which are continuously and mutually engaged. Reinforced concrete precast piles are inserted in the multiple cement-soil mixed piles at intervals or continuously. The levelling course is arranged on the inner wall of the cement-soil mixed pile wall. The underground structural outer wall is arranged on the inner wall of the levelling course and comprises reinforcing steel bars and concrete mixed with a waterproof compacting agent. The cement-soil mixed pile wall and the underground structural outer wall constitute an integrated force bearing component through a connection structure. The invention further provides a construction method of the underground structure outer wall superposed wall adopting the HCMW construction method. In this way, the underground structure outer wall superposed wall adopting the HCMW construction method is simple and reasonable in structure, a foundation pit is omitted, a series of defects of the foundation pit are avoided, the waterproof performance is improved, a support wall and a underground structure wall are connected into the force bearing integrated body, the strength is improved, the procedure is simplified, construction is convenient and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an HCMW composite wall for an exterior wall of an underground structure and a construction method thereof. Background technique [0002] Traditional underground structure external wall construction process: support, excavation (enlarging fertilizer tank), cushion, base plate waterproofing, binding base plate reinforcement and wall panel reinforcement, pouring base plate concrete, binding external wall and column reinforcement, underground structure external wall External formwork, pouring of exterior wall concrete, pasting of exterior wall waterproof membranes, waterproof protection, backfilling of fertilizer tanks, burial of outdoor pipelines, and floor construction, the following problems generally exist during the construction process: [0003] 1. It is difficult to construct the vertical formwork of the external wall [0004] The excavation space of the foundat...

AI Technical Summary

Problems solved by technology

[0003] 1. It is difficult to construct the vertical formwork of the external wall

[0004] The excavation space of the foundation pit is limited, and the width of the fertilizer tank generally reserved for construction is less than 1.2 meters. The construction of the external wall formwork of the underground structure in the narrow space is difficult, the working environment of the workers is poor, the work progress is slow, the scaffolding is dismantled twice, and the waste of turnover materials is serious;

[0005] 2. It is difficult to compact the fertilizer tank backfill soil

If there is partial membrane damage and water leakage, the entire membrane waterproof system will gradually fail;

[0009] 4. After the foundation pit is backfilled, the support structure system is scrapped, which causes serious waste and creates permanent obstacles

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