Drop-slab construction process for underground concrete structures
A construction technology, concrete technology, applied to underwater structures, infrastructure engineering, artificial islands, etc., can solve problems such as high engineering cost, complex engineering, and low work efficiency, and achieve high automation, good construction quality, and energy saving The effect of duration
Inactive Publication Date: 2013-01-30
NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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Problems solved by technology
[0003] The object of the present invention is to provide a kind of underground concrete structure drop-form construction technology, in order to solve the problems of complex engineering, high engineering cost, low work efficiency and engineering time in the existing underground concrete structure construction
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[0026] The specific construction steps of the underground concrete structure drop form construction process of the present invention are described below with the construction steps under normal circumstances, wherein, the following construction steps take the construction from the first underground floor of the building as an example.
[0027] The steps of a form-reducing construction technique for an underground concrete structure of the present invention include:
[0028] Step 1: Install the mold drop system on the first underground floor;
[0029] figure 1 Shown is the construction system structure diagram of the underground concrete structure reducing formwork construction process of the present invention after installing the formwork reducing system, such as figure 1 As shown in the figure, the lowering system 1 is suspended on the floor of the first floor, and a formwork platform 5 is fixed on the lowering system 1, and the lifting and lowering of the lowering system 1 ...
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The invention discloses a drop-slab construction process for underground concrete structures. The drop-slab construction process for underground concrete structures includes steps of firstly, mounting a drop-slab system; secondly, starting to dig next-tier soil mass to next-tier construction elevation; thirdly, placing down a formwork platform when next-tier soil is dug in place; fourthly, performing horizontal and elevation positioning of the formwork platform after the formwork platform is placed down in place; fifthly, performing binding to next-tier floors and reinforcing steel bars of beams; sixthly, pouring next-tier concrete; and seventhly, starting to dig the tier after the next-tier soil mass, and repeating the steps of one to six until construction reaches the final position. The drop-slab construction process is suitable for underground concrete structures, in particular to the structure of a basement under construction by a top-down method, digging and construction can be performed to a next floor during curing of concrete, and accordingly time for curing of concrete in conventional construction is omitted.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a form-reducing construction process of an underground concrete structure. Background technique [0002] In the existing underground concrete structure construction in my country, the formwork construction technology is still relatively backward. For example, in the construction of the reverse method underground structure, the formwork construction is mostly supported by the scaffolding pipe scattered formwork, and the formwork system of the horizontal beam slab floor structure is generally The scaffolding support system is adopted. Since it is supported on the soil layer of the lower excavation surface, it is necessary to pour a temporary cushion, which increases the cost of construction. After the floor is poured, the formwork must be dismantled and transported out before the earthwork can be excavated downward. Repeat There are many disassembly and assembly procedu...
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IPC IPC(8): E02D29/045
Inventor 李增辉陆云姜向红张瑞章晓鹏
Owner NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP