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Assembly construction method for large-cross-section prefabricated structure in deep and large foundation pit in soft soil area

A technology of prefabricated structures and construction methods, which is applied in basic structure engineering, excavation, construction, etc., can solve problems such as transportation difficulties, large-scale prefabricated components with large sections, and difficult assembly of large-section prefabricated structures, so as to reduce the cost of urban traffic effect of influence

Inactive Publication Date: 2017-06-13
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the prefabrication and assembly technology has been partially applied in construction fields such as shallow-buried small municipal pipe galleries under soft soil foundation pit conditions or small tunnels under non-soft soil foundation pit conditions in China. However, for deep and large foundation pit conditions in urban soft soil areas The large-section pipe gallery or tunnel structure or subway section below is faced with the shortage of land for urban roads, and it is impossible to use on-site ground hoisting, which makes the assembly of large-section prefabricated structures difficult. There are many columns and the large volume of large-section prefabricated components leads to difficulties in transportation. The existing prefabricated structure assembly technology has no effective solution

Method used

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  • Assembly construction method for large-cross-section prefabricated structure in deep and large foundation pit in soft soil area
  • Assembly construction method for large-cross-section prefabricated structure in deep and large foundation pit in soft soil area
  • Assembly construction method for large-cross-section prefabricated structure in deep and large foundation pit in soft soil area

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Experimental program
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Effect test

Embodiment 1

[0042] like figure 1Shown, a specific embodiment of the present invention, a kind of assembly construction method of large-section prefabricated structure in deep and large foundation pit in soft soil area, such as figure 1 As shown, there is an internal support system in the deep and large foundation pit in the soft soil area. The internal support system includes three sections of horizontal support, namely the first horizontal support 1, the second horizontal support 2 and the third horizontal support 3, and two vertical columns Support 4, the two side walls of the deep and large foundation pit are also provided with enclosure structures 5, and in this embodiment, the prefabricated structure 8 will be assembled and installed in the deep and large foundation pit.

[0043] Firstly, a block design should be carried out according to the overall prefabricated structure 8 to form a block design scheme. Prefabricated structures 8 such as figure 2 , 3 shown. The height of the p...

Embodiment 2

[0056] In this embodiment, the layout of the support system in the deep foundation pit is the same as that in Embodiment 1. figure 1 As shown, but the height of the prefabricated structure 13 in this embodiment is higher than that of the prefabricated structure 8 in Embodiment 1, and the overall height of the prefabricated structure 13 is slightly lower than the height of the first lateral support 1 . Therefore, the horizontal supports that the prefabricated structure 13 may encounter when moving longitudinally in the deep and large foundation pit are the third horizontal support 3 and the second horizontal support 2, so the prefabricated structure 13 needs to determine two prefabricated structure horizontal dividing lines 83, two horizontal The height of the dividing line 83 is slightly lower than the height of the second transverse support 2 and the third transverse support 3 respectively, and divides the prefabricated structure 13 into the bottom prefabricated structure laye...

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Abstract

The invention discloses an assembly construction method of a large-section prefabricated structure in a deep and large foundation pit in a soft soil area. The large-volume prefabricated structure with a huge volume is divided into parts by the method of the invention, and the method of longitudinal transportation in the deep and large foundation pit is adopted. This method not only solves the difficulty in transportation and assembly of large-section prefabricated structures in deep and large foundation pits in soft soil areas due to the large number of lateral supports and columns, but also does not occupy the road surface for construction, and can quickly return the road to the people, thereby reducing the impact of construction on urban traffic. Impact.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an assembly construction method for a large-section prefabricated structure in a deep foundation pit in a soft soil area. Background technique [0002] With the rapid development of construction industrialization in our country, prefabrication and assembly technology has been deeply studied in the field of urban municipal engineering. Compared with the cut-and-cast structures commonly used in China, the construction quality of the prefabricated structure is better, and the assembly construction can significantly shorten the construction period, reduce labor, reduce energy consumption, and be green and environmentally friendly, which can achieve a win-win economic and social benefit. At present, the prefabrication and assembly technology has been partially applied in construction fields such as shallow-buried small municipal pipe galleries under soft soil foundation ...

Claims

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Application Information

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IPC IPC(8): E02D17/02E02D17/04
CPCE02D17/02E02D17/04
Inventor 伍永飞张银屏嵇中姜弘林咏梅王寿生陈鼐基袁自鸣欧阳文彪
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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