Template system for building concrete structure at earth-taking opening in top-down construction method, and construction method

Abstract

The invention discloses a template system for building a concrete structure at an earth-taking opening in a top-down construction method, and a construction method, relates to the technical field of top-down method construction of constructional engineering, and aims at a problem of slowing down the engineering progress because a template needs to be set at a conventional earth-taking opening layer by layer, and floor concrete needs to be poured layer by layer. The template system comprises at least two suspended steel beams which are disposed at the top layer and at two sides of the earth-taking opening. Two adjacent suspended steel beams are fixedly connected with each other through a connection beam. Each suspended steel beam is connected with at least two groups of hanging bars. A plurality of template assemblies which are arranged longitudinally in the earth-taking opening are sequentially connected with the hanging bars in a movable connection. The template assemblies abut against structural columns located at two sides of the template assemblies, and the upper surface of the template assembly is aligned with the lower surface of a corresponding floor slab. The construction method comprises the steps: installing the above system at the earth-taking opening; binding steel bars in the template assemblies at the same time, and obtaining a plurality of connection boards through pouring concrete, wherein each connection board is fixedly combined with the corresponding floor slab; removing the template system after the connection boards are hardened, and completing the complemented construction of the floor slabs.

Description

technical field [0001] The invention relates to the technical field of reverse construction in construction engineering, in particular to a formwork system for constructing a concrete structure at a soil intake in the reverse method and a construction method thereof. Background technique [0002] Underground engineering construction or deep foundation pit engineering construction can be divided into two types: straight approach and reverse approach. The straight approach constructs the foundation pit by setting horizontal supports and retaining structures to stabilize the foundation pit. After digging to the design depth, the underground main body is constructed from bottom to top Structural part; the reverse method is to construct the underground diaphragm wall or other supporting structures along the axis of the basement of the building first, as a support for the self-weight and construction load of the upper structure before the base plate is sealed, and then construct th...

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Problems solved by technology

[0004] Aiming at the problem that in the existing upside-down method construction, the formwork support needs to be erected layer by layer at the soil intake and the floor concrete is poured layer by layer, and the setting of the concrete takes a lot of time, thereby delaying the progress of the project. The purpose of the present invention is to provide a In the upside-down method, the formwork system of the concrete structure is constructed at the soil intake. The formwork components used to pour the floor slabs of each underground floor are fixed on the hanging steel beams through the hanging bars, and are erected on the top floor through the hanging steel beams, so that multiple formworks can be realized. The positioning of components is easy to disassemble and assemble, and the operation is quick and convenient; moreover, it also provides a construction method for constructing concrete structures at the soil intake in the reverse method. One-time pouring construction of the concrete structure at the joint, thus improving work efficiency and shortening the construction period

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