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A platform for research: civil engineering, architecture and urbanism
Top shield launching structure and construction method thereof
The invention discloses a top shield starting structure and a construction method thereof. The top shield starting structure comprises a working well foundation pit, an inner supporting system and a counter-force seat system. The counter-force seat system is arranged on the back face, in the tunneling direction of the top shield machine, of the working well foundation pit, the counter-force seat system comprises a top shield counter-force seat bearing platform and a prestress reinforcing structure, the prestress reinforcing structure comprises a fastening block and a prestress steel strand, the first end of the prestress steel strand is fixed to the top shield counter-force seat bearing platform through the fastening block, and the second end of the prestress steel strand is fixed to the top shield counter-force seat bearing platform through the fastening block. The second end is fixed on a bottom plate of the working well foundation pit through a fastening block, and the prestressed steel strand is used for connecting the counter-force seat system with the working well foundation pit to form an integral stress system. According to the top shield launching structure, the top shield counter-force base bearing platform transmits force to the working well foundation pit bottom plate through the prestressed steel strands to form an overall stress system, and shield launching jacking thrust is provided, so that the problem that in top shield construction, the jacking thrust at the back near water or the free position is insufficient is solved.
本发明公开了一种顶盾始发结构及其施工方法，所述顶盾始发结构包括工作井基坑、内支撑系统和反力座系统；反力座系统设于所述工作井基坑沿顶盾机的掘进方向的背面，所述反力座系统包括顶盾反力座承台和预应力加强结构，所述预应力加强结构包括紧固块和预应力钢绞线，预应力钢绞线的第一端通过紧固块固定在顶盾反力座承台上，第二端通过紧固块固定在工作井基坑的底板上，预应力钢绞线用于将反力座系统与工作井基坑连接形成整体受力体系。本发明的顶盾始发结构的顶盾反力座承台通过预应力钢绞线将力传递至工作井基坑底板形成整体受力体系，提供盾构始发顶进推力，从而解决顶盾施工中存在的后背临水或临空处顶推力不足的问题。
Top shield launching structure and construction method thereof
The invention discloses a top shield starting structure and a construction method thereof. The top shield starting structure comprises a working well foundation pit, an inner supporting system and a counter-force seat system. The counter-force seat system is arranged on the back face, in the tunneling direction of the top shield machine, of the working well foundation pit, the counter-force seat system comprises a top shield counter-force seat bearing platform and a prestress reinforcing structure, the prestress reinforcing structure comprises a fastening block and a prestress steel strand, the first end of the prestress steel strand is fixed to the top shield counter-force seat bearing platform through the fastening block, and the second end of the prestress steel strand is fixed to the top shield counter-force seat bearing platform through the fastening block. The second end is fixed on a bottom plate of the working well foundation pit through a fastening block, and the prestressed steel strand is used for connecting the counter-force seat system with the working well foundation pit to form an integral stress system. According to the top shield launching structure, the top shield counter-force base bearing platform transmits force to the working well foundation pit bottom plate through the prestressed steel strands to form an overall stress system, and shield launching jacking thrust is provided, so that the problem that in top shield construction, the jacking thrust at the back near water or the free position is insufficient is solved.
本发明公开了一种顶盾始发结构及其施工方法，所述顶盾始发结构包括工作井基坑、内支撑系统和反力座系统；反力座系统设于所述工作井基坑沿顶盾机的掘进方向的背面，所述反力座系统包括顶盾反力座承台和预应力加强结构，所述预应力加强结构包括紧固块和预应力钢绞线，预应力钢绞线的第一端通过紧固块固定在顶盾反力座承台上，第二端通过紧固块固定在工作井基坑的底板上，预应力钢绞线用于将反力座系统与工作井基坑连接形成整体受力体系。本发明的顶盾始发结构的顶盾反力座承台通过预应力钢绞线将力传递至工作井基坑底板形成整体受力体系，提供盾构始发顶进推力，从而解决顶盾施工中存在的后背临水或临空处顶推力不足的问题。
Top shield launching structure and construction method thereof
顶盾始发结构及其施工方法
FU XIONG (author) / XIAO XIANGNAN (author) / XIAO HONGBO (author) / CHEN JINGZHI (author) / LU SHIDE (author) / LEE CHANG-RIN (author) / ZHANG QIAOMING (author) / TAN KE (author)
2024-11-22
Patent
Electronic Resource
Chinese
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