Concave-convex jointing method of lining gilled tube and inner lining for shield tunnel
A technology of lining segment and connection method, applied in the field of tunnels, can solve the problems of large volume consumption and increased engineering cost, and achieve the effects of increasing shear resistance, reducing structural thickness and considerable economic benefits.
Inactive Publication Date: 2007-08-08
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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Problems solved by technology
In the above case, only pressure and partial shear force can be transmitted between the inner and outer layers, so lining segments and inner linings with relatively large thickness are required, and the volume of components with large thickness is large. With the increase of tunnel length, Will directly lead to a significant increase in engineering costs
Method used
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Embodiment
[0015] Embodiment: This embodiment involves a concave-convex connection method between the lining segment and the inner lining in a shield tunnel using the following steps: first, the lining segment 1 is prefabricated. At this time, the lining segment steel Concave-convex grooves are set on the inner arc surface of the mold, so that the inner arc surface of the poured outer lining segment 1 has a concave-convex tenon-groove structure 4; then the lining segment 1 is assembled; after the outer lining segment is assembled , the integral pouring construction of the inner layer lining 2 is carried out, and the inner layer lining 2 is connected and fixed with the inner arc surface of the lining segment 1 through integral pouring.
[0016] The concave-convex grooves are distributed continuously, sequentially and evenly along the inner arc surface of the lining segment
[0017] The concavo-convex tenon-groove structure 4 is continuously formed by the groove 5 and the tenon 6 in sequen...
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The invention relates to a convex-concave connecting method for lining segment and inner lining in shield-tunnel, belonging to the tunnel kind. The method makes the lining segment and inner lining connect together effectively by setting tenon slot on the connecting surface of lining segment and inner lining. The connecting surface can transfer pressure, shear force and bending moment. As folding components bear forces in common, the structure thickness can be decreased. The merit of invention is that tensile resistance and shear resistance abilities of connecting surface of outer lining and inner lining can be increased; it is guaranteed that inner lining and outer lining are used as an integral folding component to work to a certain extent; not only the structure thickness can be decreased but also there is considerable economical benefit.
Description
technical field [0001] The invention relates to tunnels, in particular to a concave-convex connection method for lining segments and inner linings in shield tunnels. Background technique [0002] Shield method tunnels have been widely used in large-depth underground projects. With the application of shield method in urban large-scale sewer pipelines and pressure water tunnels, the stress conditions of lining structures are becoming more and more complicated. Pressure, but also to withstand the internal water pressure. The single-layer prefabricated lining can no longer meet the structural force requirements, and the cast-in-place secondary integral lining must be used together as the load-bearing structure. In the shield tunneling project under internal pressure, in order to meet the technological requirements, correct construction errors and the needs of structural stress, it is generally necessary to adopt a double-layer lining structure. The joint surface of the outer l...
Claims
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IPC IPC(8): E21D11/04
Inventor 沈秀芳曹文宏杨志豪陈正杰乔宗昭狄永媚许熠
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE