Separated type tunnel arch-replacement supporting structure and construction method thereof
A support structure and separate technology, applied in the field of support structures of separate tunnels, can solve the problems of time-consuming and laborious erection of support structures, unguaranteed construction period, and incompatibility with construction requirements, etc., so as to improve construction quality and enhance The effect of strength and convenience of construction
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[0031] The present invention will be further described below in conjunction with the accompanying drawings of the specification, but the protection scope of the present invention is not limited to this:
[0032] Such as Figure 1-8 As shown, the split tunnel arch-changing support structure of the present invention includes a support structure body, which is provided with a hollow grouting hole 11, an original steel frame 1, a new steel frame 2, and a small grouting hole. Conduit 4, low side wall 5, temporary invert structure, steel mesh 10, hollow grouting hole 11, invert 12 and secondary lining structure 18. The temporary invert structure is composed of I-shaped steel frame 6 and lock-foot steel pipe 7. It is erected at the middle height of the tunnel and reinforced by wooden wedges; the hollow grouting hole 11 is reserved behind the initial support structure, and the small grouting pipe 4 is arranged at the circumferential position of the tunnel. After replacing the new steel f...
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