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Construction method of support structure of deep foundation pit

A construction method and supporting structure technology, which is applied in basic structure engineering, excavation, construction, etc., can solve the problems of no support for the enclosure structure, deformation of the enclosure structure, etc., and achieve the effect of ensuring stability and reducing deformation

Pending Publication Date: 2018-11-06
TENGDA CONSTR GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a construction method for a support structure of a deep foundation pit to solve the problem in the prior art that the enclosure structure is deformed due to no support or insufficient support during the construction of a deep foundation pit

Method used

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  • Construction method of support structure of deep foundation pit
  • Construction method of support structure of deep foundation pit
  • Construction method of support structure of deep foundation pit

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Embodiment 1

[0036] Such as figure 1 Shown is the cross-sectional view of the deep foundation pit support of this embodiment, please refer to figure 1 , the present embodiment provides a construction method for a support structure of a deep foundation pit, comprising the following steps:

[0037] S1: Erection of steel supports for temporary support of the enclosure structure of the deep foundation pit;

[0038] S2: A reinforced concrete support is set near the steel support to support the enclosure structure of the deep foundation pit.

[0039] Such as figure 1 As shown, a total of 5 supports are set up, observe figure 1 It can be seen from the figure that according to the positional relationship from top to bottom, the first and fourth supports are set as reinforced concrete supports, and the middle three supports are set as steel support structures.

[0040] Because the reinforced concrete support needs a certain curing time to play a supporting role, during the first and fourth supp...

Embodiment 2

[0048] Such as figure 2 As shown, the difference between the second embodiment and the first embodiment is that the connection between the steel support and the enclosure structure is no longer through the pre-embedded steel plate inside the enclosure structure, but by setting the enclosure purlin 1 outside the enclosure structure, and the steel The support 40 is supported on the purlin 1, and the movable end 403 and the fixed end 401 of the three temporary steel supports in the middle are connected to the enclosure structure reinforcement bar 801 in the enclosure structure 80 through the enclosure purlin 1, and other structural connection methods are the same as in the first embodiment.

[0049] Wherein, the steel support construction steps for setting purlins are: 1. construction preparation → 2: measuring and setting out the line to locate support points on the enclosure structure → ③ digging out the enclosure at the position corresponding to the support points on the enclo...

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Abstract

The invention provides a construction method of a support structure of a deep foundation pit. The construction method comprises the following steps that, before the reinforced concrete support is constructed, a temporary steel support is additionally arranged at the position, close to the upper portion of the reinforced concrete support, of the reinforced concrete support; the reinforced concretesupport construction comprises the steps of steel bar binding, template erection, concrete pouring, maintenance and template removal, wherein the steel support consists of a steel pipe joint, a movable end and a fixed end, the steel supports are connected through pre-buried steel plates or steel bars in the enclosure structures; construction of the concrete support is carried out at the corresponding place; after the strength of the concrete support reaches the design requirement, the steel support is dismounted. According to the method, the condition that the enclosure structure is not effectively supported during supporting construction of the reinforced concrete can be overcome, and deformation of the enclosure structure during supporting construction of the reinforced concrete is reduced; after the reinforced concrete support meets the design requirements, the temporary steel support is disassembled, therefore, the stability and effectiveness of the deep foundation pit enclosure system are guaranteed, and a powerful guarantee is provided for deep foundation pit construction.

Description

technical field [0001] The invention relates to a construction method of a deep foundation pit, in particular to a construction method of a supporting structure of a deep foundation pit. Background technique [0002] As we all know, in the prior art, steel support is the most commonly used form of support for deep foundation pits. The self-weight of the steel support is small, it can be dug and supported at any time, the construction is convenient, it can be recycled and reused, and it is economical and environmentally friendly. However, the rigidity of the steel support is small and the overall deformation is large. In more complicated cases, only steel support systems will not be able to meet the requirements of deep foundation pit excavation for support systems. [0003] Therefore, there is a need for a construction method for the support structure of the deep foundation pit that can meet the high requirements of the deep foundation pit excavation on the support system. ...

Claims

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Application Information

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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 孙九春薛武强杨柳唐俊华曹虹
Owner TENGDA CONSTR GROUP CORP
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