Pouring lining lap joint device, tunnel lining trolley and tunnel construction method

Abstract

The invention provides a poured lining lap joint device, a tunnel lining trolley and a tunnel construction method. The poured lining lap joint device comprises a back shore panel, a first lap joint extension piece, a first deformation piece, a second lap joint extension piece, a second deformation piece and a limiting piece, the back shore panel, the first lap joint extension piece, the second lap joint extension piece and the limiting piece are sequentially arranged in the longitudinal direction, the first deformation piece is arranged on the first lap joint extension piece, and the second deformation piece is arranged on the second lap joint extension piece. The second deformation piece is arranged on the second lap joint extension piece, the second deformation piece protrudes out of the first deformation piece, and the elastic deformation capacity of the second deformation piece is better than that of the first deformation piece. The tunnel lining trolley comprises a main frame body and a poured lining lap joint device connected to the main frame body. The tunnel construction method comprises the steps that pressure detection data of the first deformation part are obtained through the pressure sensing device; and when the pressure detection data reaches a preset value, the poured lining lap joint device stops stretching. The quality of the lining section and the quality of the lap joint construction seam of the lining section are effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a poured lining overlapping device, a tunnel lining trolley and a tunnel construction method. Background technique [0002] When the secondary lining layer is poured in the tunnel construction, the existing construction technology uses the secondary lining trolley to carry out the cast-in-place concrete. The lining trolley has a rigid structure as a whole. When the car is pushed in place to position the formwork of the section to be poured and support it, it involves the overlapping operation of the side panel and the end of the poured lining section. [0003] The existing methods of lapping the ends of lining trolleys mainly include rigid lapping and flexible lapping. [0004] Such as figure 1 As shown, the poured first secondary lining section 91 is located in the first area 901 of the lining position 900, and the second area 902 is the area where the second secon...

AI Technical Summary

Problems solved by technology

In the flexible overlapping mode, the flexible rubber part 84 contacts the end of the first secondary lining section 91 to avoid hard contact and solve the problems of concrete cracking and loose overlapping. image 3 and Figure 4 As shown, when there are deviations in the running and positioning of the lining trolley, the flexible rubber part 84 is not completely facing the first secondary lining section 91. After crossing the base surface 90 and entering the second area 902, after pouring concrete in the second area 902 and demoulding, a depression 921 appears on the surface side of the pouring section and irregular pits 922 will be formed at the construction joint, resulting in Defective quality issues

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