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Foundation pit inclined support system and foundation pit inner support construction method

A technology of oblique support and construction method, which is applied in the direction of basic structure engineering, excavation, construction, etc., can solve the problem that the support structure is not allowed to enter the surrounding underground soil, so as to reduce the difficulty of excavating the reserved soil and reduce the construction cost , the effect of reduced correlation

Pending Publication Date: 2021-10-01
中铁一局集团厦门建设工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] b. The support structure is not allowed to enter the surrounding underground soil;

Method used

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  • Foundation pit inclined support system and foundation pit inner support construction method
  • Foundation pit inclined support system and foundation pit inner support construction method

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Embodiment Construction

[0031] Please check figure 1 and figure 2 , a foundation pit oblique support system, which includes a side wall enclosure structure 100 of the foundation pit, a crown beam 200 connected to the side wall enclosure structure, steel pipe diagonal braces, and corbels; the corbels are fixed on the foundation pit floor, The steel pipe diagonal brace is between the side wall enclosure structure 100 and the foundation pit floor. One end of the steel pipe diagonal brace is fixedly connected to the crown beam 200 and the other end is fixedly connected to the corbel. Usually, a steel plate is pre-embedded on the corbel, and the steel pipe diagonal brace The support is fixedly connected with the corbel through the embedded steel plate.

[0032] For the steel pipe diagonal brace with a large support span, in order to prevent the steel pipe diagonal brace from being unstable due to excessive axial center pressure, a column 12 and a horizontal connecting rod are provided. One end of the co...

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Abstract

The invention discloses a foundation pit inclined support system and a foundation pit inner support construction method. The foundation pit inclined support system comprises a side wall enclosure structure of a foundation pit, a top beam connected with the side wall enclosure structure, a steel pipe inclined strut and a bracket, wherein the bracket is fixedly arranged on a foundation pit bottom plate, the steel pipe inclined strut is arranged between the side wall enclosure structure and the foundation pit bottom plate in an inclined strut mode, one end of the steel pipe inclined strut is fixedly connected with the top beam, and the other end of the steel pipe inclined strut is fixedly connected with the bracket. The foundation pit inner support construction method is based on the foundation pit inclined support system and comprises the following steps of (1) mounting a long type inclined strut; (2) excavating reserved soil and constructing a residual bottom plate; (3) mounting a short type replacement support and removing the long type inclined strut; and (4) constructing a main body structure and removing the short type inclined strut. The foundation pit inclined support system and the foundation pit inner support construction method have the advantages that supporting materials can be recycled, so that the supporting rigidity is increased; and the support construction period is short, the reserved soil excavation difficulty is reduced, the construction cost is reduced, and the construction safety is improved.

Description

technical field [0001] The invention relates to a support structure for a foundation pit, in particular to an oblique support system for a foundation pit and an internal support construction method for the foundation pit. Background technique [0002] The function of the foundation pit support system should ensure that the foundation pit excavation and structural construction can be successfully completed according to the established plan under the condition of no water. It is necessary to keep the side wall stable and limit the deformation of the soil layer to ensure that the existing buildings and For the normal use of the facilities, it is necessary to keep the soil at the bottom of the pit stable, so as to ensure that the soil at the bottom of the pit and the foundation are not damaged in terms of structure and function. [0003] In the coastal and riverside areas, soft soil with a certain thickness generally exists within the depth range affected by engineering construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 徐建宁曾凡福王志刚周诗风吴斌徐斗国孙华金胡红亮潘鹏
Owner 中铁一局集团厦门建设工程有限公司
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