Pre-added axial force based circular support system in shield tunnel and construction method of system
A shield tunneling and support system technology, applied in tunnels, earthwork drilling, mining equipment, etc., can solve the problems of impassable construction vehicles, difficult operation of prestress, and large space occupation, so as to ensure normal traffic and save construction period , the effect of saving investment
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[0037] The present invention will be described in detail below in conjunction with specific embodiments.
[0038] The invention relates to a circular support system in a shield tunnel based on pre-added axial force, which uses a combination of section steel and steel plate welded, connected by connecting steel plates and bolts, and then formed into a continuous, rigid, and pre-stressed structure by a jack. The overall support system of stress, so as to achieve the purpose of forming an effective reinforcement support for the segment.
[0039] The structure specifically includes an annular section steel and steel plate assembly in the shield tube segment 1, and a support 11 perpendicular to the shield tube segment 1 is arranged between the section steel and steel plate assembly and the shield tube segment 1. The profile steel and steel plate assembly is divided into multiple sections in the circumferential direction, each section includes arc-shaped section steel, and each section o...
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