Steel member pre-buried in composite wall during reverse construction of foundation pit and pre-burying process thereof

Abstract

The invention relates to the technical field of foundation pit construction, in particular to a steel member pre-buried in a composite wall during the reverse construction of a foundation pit and a pre-burying process thereof. The steel member is of a rectangular steel pipe type structure, the width of the steel pipe type structure is 70 mm, the height of the steel pipe type structure is equal to the thickness of a laminate plus 30 mm, and the steel pipe type structure is formed by bending and welding a steel plate with the thickness of 5 mm. Therefore, the problems that positioning of a pre-embedded steel bar connector of a reverse construction method construction laminate is difficult to control and the utilization rate of the pre-embedded steel bar connector is low can be solved, the construction time is shortened, manpower resources are saved, and the construction efficiency is improved; and the problem of later waterproof weak points is avoided, so that the long-term use performance of the structure is ensured.

Description

technical field [0001] The invention relates to the technical field of foundation pit construction, in particular to a steel member pre-embedded in a composite wall during foundation pit reverse construction and a pre-embedding process thereof. Background technique [0002] At present, there have been many cases of foundation pits being constructed by the upside-down method in domestic and foreign projects. In the construction process of the upside-down method, each layer slab is connected with the ground wall as a support in the excavation condition. The construction method and control measures are mainly to pre-embed steel bars at the corresponding elevations in the ground wall according to the design drawings, and to connect with the laminate steel bars through connectors later. The steel bars of each layer must pass through the inner waterproof layer of the ground wall. [0003] At present, the pre-embedded steel bars and the waterproof membrane inside the foundation p...

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Problems solved by technology

[0004] The object of the present invention is to aim at the defects and deficiencies of the prior art, to provide a steel member pre-embedded in the compound wall and its pre-embedding process during the upside-down construction of the foundation pit with reasonable design, which can solve the pre-embedding of the laminates in the upside-down construction Difficult to control the positioning of steel bar connectors and the low utilization rate of pre-embedded steel bar connectors shorten the construction time, save human resources and improve construction efficiency; avoid the problem of weak waterproof points in the later stage, so as to ensure the long-term performance of the structure

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