Tunnel lining trolley and lining concrete pouring method thereof

Abstract

The invention discloses a tunnel lining trolley, which comprises a lining trolley body (1), a lining trolley panel (2) is arranged on the lining trolley body (1), and a lining trolley panel (2) is arranged on the lining trolley body (1). Outside and around the main body of the lining trolley, a plurality of pieced steel end forms are arranged, and the gap between the two adjacent pieced steel end forms is blocked by a pieced wooden formwork (3), and the pieces of the pieced steel end forms The upper end is connected with the initial tunnel support (4), and one side of the segmented steel end form is connected with the lining trolley panel (2) through a connecting mechanism. The panel of the steel end formwork of the present invention is of movable design, so that the adaptability of the steel end formwork to the thickness of the concrete lining is improved. The end formwork is a piece-type steel formwork, which is modularly assembled, and the assembly becomes more convenient, the assembly efficiency is higher, and the formwork is airtight. It has better performance and avoids the occurrence of lining construction quality accidents due to loose formwork during the construction process, which greatly improves the construction progress of concrete lining.

Description

technical field [0001] The invention relates to a tunnel lining trolley and a lining concrete pouring method thereof. Background technique [0002] With the increasing construction of long tunnels in China, TBM roadheaders are used more and more frequently, and the application of TBM synchronous lining technology greatly shortens the tunnel construction period. At present, the tunnel construction process mainly includes the following four steps: excavation→initial support→inverted arch lining construction→arch wall lining construction. The construction of the lining is related to the final construction quality of the project, and its construction progress is also related to the cycle of the entire tunnel construction. [0003] The current lining construction method is mainly as follows: use the integral hydraulic lining trolley, press the rear end of the trolley on the concrete lining that has been poured on the previous slab during lining construction, use the poured concr...

AI Technical Summary

Problems solved by technology

This kind of lining construction method is currently the most advanced method, and it has obvious disadvantages: the front-end formwork needs to be assembled tightly piece by piece by using narrow wooden boards, and the on-site assembly is troublesome, inefficient, and time-consuming.

The assembly effect of the front-end formwork is related to the construction quality. During the on-site construction, the formwork is often not tightly assembled or fixed firmly, resulting in serious grout leakage during the construction process, resulting in honeycomb pockmarks, holes, leaky tendons, and rotten roots on the end face of the lining concrete. Defects. Seriously, the size of the lining under construction does not meet the design requirements due to the running of the formwork, and it has to be scrapped.

These problems will cause the concrete lining construction progress to be slow and seriously delay the construction period.

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