Construction method of foot looking opening pull type self-stabilization large-formwork wall

Abstract

The invention relates to the technical fields of wall construction of underground comprehensive pipe galleries, down-traversing tunnels and expressway culverts of municipal engineering, in particularto a construction method of a foot looking opening pull type self-stabilization large-formwork wall. Self stabilization can be achieved, external force for supporting is not needed, operation is convenient, manpower and material resources are saved, and the work efficiency and construction quality are improved. The method comprises the following steps of (1) construction preparation; (2) survey and setting out, wherein a, a provided control point is retested and checked, b, the provided control point is adopted as a first-stage control point, control point encryption is carried out, and c, a GPS static distribution and control scheme is made, the GPS dynamic position technology is utilized for field setting out, and pale grey is used for making excavation line marks; (3) foundation pit excavation; (4) macadam cushion layer pavement; (5) foundation formwork mounting; (6) foundation concrete pouring; (7) steel bar binding; (8) inner formwork and outer formwork mounting, wherein a, formworks are in place, and b, the formworks are fastened; (9) wall concrete pouring; and (10) formwork demounting and maintenance.

Description

technical field [0001] The invention relates to the technical field of construction of underground comprehensive pipe corridors, underpass tunnels, and expressway culvert walls of municipal engineering, in particular to a construction method for locking feet and opening self-stabilizing large formwork walls. Background technique [0002] As one of the important infrastructures of the city, the comprehensive pipe gallery is of great significance in the process of urban development. Since the comprehensive pipe gallery is an underground structure, there are many types of pipelines laid in it, including electricity, fire protection, gas, water supply and drainage, etc. The waterproof performance of the integrated pipe gallery itself is in accordance with the national regulations "Technical Specifications for Urban Integrated Pipe Gallery Engineering" GB50838-2015. Efforts should be made to improve the waterproof construction technology of the comprehensive pipe gallery to ensur...

AI Technical Summary

Problems solved by technology

[0003] In the past, the conventional construction of the wall of the underground comprehensive pipe gallery mostly used the construction technology of steel pipe brackets and double-drawn screws to fix the inner and outer formwork. To ensure that the formwork is not easy to deform, the construction process is cumbersome and consumes a lot of manpower and physics. After the concrete pouring is completed, there are many scars and holes on the surface of the steel reinforcement. The self-waterproof performance is poor and the decoration is very difficult. It is difficult to achieve the desired effect.

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