Tunnel bottom prefabricated assembly type tunnel structure and construction method thereof

Abstract

The invention relates to the technical field of tunnel engineering and discloses a tunnel bottom prefabricated assembly type tunnel structure. The tunnel bottom prefabricated assembly type tunnel structure comprises a primary support, a secondary lining, a drainage system and a filling layer. Six protrusions are arranged on the secondary lining, and the six protrusions are arranged at intervals in the transverse direction of a tunnel. Each protrusion extends in the extending direction of the tunnel. A box type plate prefabricated block and two T type plate prefabricated blocks located on the two sides of the box type plate prefabricated plate and connected with the box type plate prefabricated block are adopted for the filling layer. The box type plate prefabricated block comprises a top plate, a left vertical plate and a right vertical plate, wherein the left vertical plate and the right vertical plate are arranged on the two sides of the lower portion of the top plate. The left vertical plate, the right vertical plate, vertical plates of the two T type plate prefabricated blocks and the ends, away from the box type plate prefabricated block, of the two T type plate prefabricated blocks are correspondingly and fixedly connected with the six protrusions. By the adoption of the tunnel structure, the diseases of the delamination, cracking, bottom bulging, sinking, mud pumping and the like of the tunnel foundation can be solved effectively, the construction pollution is reduced, and the labor production efficiency is improved. The invention further discloses a construction method of the tunnel structure.

Description

Technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a prefabricated tunnel structure at the bottom of a tunnel, and also relates to a construction method of the above-mentioned prefabricated tunnel structure at the bottom of the tunnel. Background technique [0002] The bottom structure of a railway tunnel is one of the main components of the tunnel structure, and it is the foundation of the tunnel structure. The solid and stable bottom structure is the primary condition to ensure a good track operation. Under the current design system, there are defects in the construction process of the drainage system and the main bearing structure of the railway tunnel, the construction quality is not easy to control, and it is difficult to carry out daily maintenance and repair. Because the bottom of the tunnel is affected by natural and man-made factors such as repeated power of trains and groundwater erosion, the base structure is pro...

AI Technical Summary

Problems solved by technology

Under the current design system, there are defects in the construction process of the drainage system at the bottom of the railway tunnel and the main load-bearing structure, the construction quality is difficult to control, and it is difficult to carry out daily maintenance and repairs

Images