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Floorslab construction method used during reverse building method construction

A technology of construction method and reverse method, applied in excavation, artificial islands, water conservancy projects, etc., can solve the problems of long construction period and high cost, and achieve the effect of simple operation, saving construction period and cost, and good promotion value.

Active Publication Date: 2016-02-24
NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for floor slab construction in reverse construction, which is used to solve the problems of long construction period and high cost caused by the construction of a large number of underground cast-in-place beams and slabs in traditional reverse construction

Method used

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  • Floorslab construction method used during reverse building method construction
  • Floorslab construction method used during reverse building method construction
  • Floorslab construction method used during reverse building method construction

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Embodiment 1

[0028] In this embodiment, the construction method of the floor slab in the reverse method construction of the present invention is described in detail by taking the construction of the third underground floor (ie when N=4) by the reverse method as an example.

[0029] Please refer to Figure 1 to Figure 5 , a floor construction method in reverse construction, the floor includes the beam-slab unit on the first floor (i.e. the roof of the basement) to the beam-slab unit on the Nth floor (i.e. the floor of the basement) from top to bottom, wherein, N is greater than or equal to 3 integer. Considering the integrity of the basement, only the beam-slab units on the first floor to the N-1th floor are prefabricated, and the beam-slab units on the Nth floor are constructed with cast-in-place concrete. This construction method comprises the following steps:

[0030] S001: Prefabricate the beam-slab units of each floor before excavation of the foundation pit for backup: starting from ...

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Abstract

The invention relates to a floorslab construction method used during reverse building method construction and belongs to the technical field of building engineering. The floorslab construction method used during reverse building method construction is used for solving the problems that during traditional reverse building method construction, a large number of underground cast-in-place beam slabs are constructed, and consequently, the construction period is long and cost is high. The construction method includes the steps that firstly, beam slab units in various layers are prefabricated before excavation of a foundation pit, and therefore a temporary prefabricated combined body which is vertically connected in a stacked manner is formed; secondly, the temporary prefabricated combined body is hoisted to the position above soil of the foundation pit and is placed on temporary supporting bases of latticed columns; thirdly, the soil of the foundation pit is excavated till a first layer of space is formed, the first layer of beam slab unit is fixedly installed, and meanwhile, pouring is conducted on beam column joints of the first layer of beam slab unit; fourthly, excavation continues till a second layer of space is formed, the remaining portion of the temporary prefabricated combined body is hoisted and fixed to latticed columns of the second layer of space, the second layer of beam slab unit is fixedly installed, and pouring is conducted on beam column joints at the position; and the steps are executed in a circulating manner in this way till the soil of the whole foundation pit is excavated and the Nth layer of beam slab unit is formed through pouring.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a floor slab construction method in reverse construction. Background technique [0002] With the continuous shrinking of urban land, the cramped construction site and the increase of excavation depth, the upside-down method, as a method of deep foundation pit support and underground engineering construction, has unique advantages compared with the traditional straight-up method. Superiority. The superiority of the upside-down method is mainly reflected in the control of the deformation effect of the foundation pit, the reduction of material waste, the high degree of civilized construction, and the overcoming of the narrow construction site. [0003] The traditional upside-down construction method generally first constructs the supporting structure and engineering piles, and then directly constructs the roof of the underground structure or excavates to a certain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D17/02
CPCE02D17/02E02D29/045
Inventor 龙莉波马跃强高伟李成刘龙戚建文赵波
Owner NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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