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Construction method of concrete supporting structure

A technology of supporting structure and construction method, which is applied in the direction of basic structure engineering, excavation, construction, etc., and can solve problems such as insufficient bearing capacity of soil nails or anchor rods, and insufficient stability of slopes.

Active Publication Date: 2010-06-23
MCC COMM CONSTR GRP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The present invention proposes a construction method of a concrete support structure, which solves the problems of insufficient bearing capacity of soil nails or anchor rods and insufficient stability of slopes in deep foundation pit slopes in the fields of highway engineering and the like. The specific technical scheme is as follows :

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  • Construction method of concrete supporting structure
  • Construction method of concrete supporting structure
  • Construction method of concrete supporting structure

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0023] figure 1 is a flowchart of a specific embodiment of the present invention, figure 2 is the excavation sequence diagram of the foundation pit according to a specific embodiment of the present invention. In this embodiment, the supporting structure adopts a soil nail structure, such as figure 1 Shown, in this embodiment, mainly carry out construction according to the following steps:

[0024] First, carry out the step 101 of excavating the working face, that is, according to the preset construction sequence, construct in layers and sections from top to bottom, the excavation distance of each layer of soil layer is 1-2m, and the section length is 5-20m. And according to the design drawings and excavation slope requirements, calculate the excavation line of the slope and the core soil edge of the foundation pit. The excavation sequence of ...

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Abstract

The invention provides a construction method of a concrete supporting structure, comprising the following steps: step (101) of excavating working surface, step (102) of injecting a first layer of concrete retaining wall, step (103) of arranging hole sites, step (104) of pore-forming, step (105) of borehole cleaning, step (106) of installing a supporting structure, step (107) of pressure slip casting, step (108) of hanging and paving steel mesh sheets, step (109) of injecting a second layer of concrete pavement, step (110) of concrete pavement backside back fill grouting, step (111) of concrete pavement curing, the step of using drilling equipment to drill at preset design positions in the step (104) of pore-forming and the step of using a hole extruding and chambering device to expand bore diameter of boreholes when drilling is to reach preset depth to form a supporting structure with a big-head tail end and with diameter being larger than bore diameter. With the design adopted, reinforcing capacity of the concrete supporting structure can be fully enhanced.

Description

technical field [0001] The method relates to a construction method for a concrete support structure, in particular to a construction method for foundation pit support using soil nails or bolts. Background technique [0002] At present, the soil nail or bolt support structure is in the promotion and development period at home and abroad, and has been widely used in foundation pit support construction in the fields of highway engineering. After using this concrete support structure, it can Reinforce and protect the slope or foundation pit in a timely manner to fully maintain the stability of the slope and prevent the weathering and instability of the mountain. [0003] For the above-mentioned concrete support structure, various construction methods have appeared, and the relatively common construction method mainly includes the following steps: the step of excavating the working face, the step of spraying the first layer of concrete layer, and the step of installing the suppor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D17/02
Inventor 通振远张国梁史生军梁彦伟王占奎
Owner MCC COMM CONSTR GRP CO LTD
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