Pipe roofing and bamboo reinforcement grouting anchor combined supporting structure and method

Abstract

The invention discloses a pipe roofing and bamboo reinforcement grouting anchor combined supporting structure and method. The supporting structure comprises a plurality of pipe roofing steel tubes and a plurality of horizontal bamboo reinforcement grouting anchors. The pipe roofing steel tubes and the horizontal bamboo reinforcement grouting anchors are alternately arranged. The pipe roofing steel tubes and a reinforced grouting curtain formed by the horizontal bamboo reinforcement grouting anchors are combined to jointly form a high-rigidity joint supporting and stress system. The pipe roofing steel tubes are internally filled with cement concrete. The supporting method comprises the steps that firstly, a pipe-jacking working well and a receiving well are built; secondly, the pipe roofing steel tubes are distributed; thirdly, construction and grouting are performed on the bamboo reinforcement grouting anchors; fourthly, the pipe roofing steel tubes are internally filled with concrete; fifthly, supporting is performed during excavation; and sixthly, an internal structure is built piecewise, and finally an integrated underground structure is formed. The pipe roofing and bamboo reinforcement grouting anchor combined supporting structure and method have the beneficial effects that construction and operation safety is guaranteed, the construction period can be shortened, and the cost can be lowered; and the rigidity of the supporting structure is greatly improved, the ground surface deformation can be effectively controlled, and the safety is good.

Description

technical field [0001] The invention relates to a combined support structure and method, in particular to a combined support structure and method of pipe curtains and bamboo reinforcement grouting bolts. Background technique [0002] At present, with the acceleration of urbanization in China, more and more large underground structures are built under urban roads or important buildings. For shallow-buried urban tunnels with large cross-sections and short distances, it is not economical to use the shield method for construction, and the open-cut method will greatly interfere with urban production and life. When the geological conditions are poor, the burial depth is shallow, and there are sensitive buildings on the upper part, if the shallow buried excavation method is used for construction, the ground subsidence is difficult to control, and once a construction accident occurs, it will cause significant social impact. Therefore, it is very important to find a construction met...

AI Technical Summary

Problems solved by technology

When the geological conditions are poor, the buried depth is shallow, and there are sensitive buildings on the upper part, if the shallow buried underground excavation method is used for construction, the ground subsidence is difficult to control, and once a construction accident occurs, it will cause significant social impact

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