A construction method for the repair structure of the upper arch of a ballastless track railway tunnel

Abstract

Disclosed is a ballastless track railway tunnel upper arch repairing structure and a construction method. According to the ballastless track railway tunnel upper arch repairing structure and the construction method, tunnel upper arch deformation repairing and the long-term maintaining effect are achieved, and the characteristics of good economy, convenient construction and environmental protection and the like are achieved. The ballastless track railway tunnel upper arch repairing structure comprises a tunnel arch ring structure and a tunnel base structure located at the bottom of the tunnel arch ring structure and further comprises pressure releasing holes and grouted anchor rods, wherein the pressure releasing holes are formed in the position, below the waists of the two sides of the tunnel arch ring structure, of a rock mass at intervals, and closing plugs are fixedly arranged in the interiors, close to the side of the tunnel arch ring structure, of the pressure releasing holes; and the grouted anchor rods are arranged in a foundation rock mass at the bottom of a tunnel at intervals, and the upper ends of the grouted anchor rods are fixedly connected with connecting rebars buried in the tunnel base structure.

Description

technical field [0001] The invention relates to geotechnical engineering, in particular to repair and reinforcement of an arch on the bottom plate of a ballastless track railway tunnel. Background technique [0002] Due to the influence of terrain and adverse geology, mountain railways have a large number of tunnel projects. When a tunnel project passes through areas with unknown geological conditions such as special uncertain ground stress, tunnel arch deformation may occur in the constructed tunnel project. There are also many related cases in actual projects, which have an impact on ballastless track railways. Very large, the resulting arching deformation is very difficult to repair and the deformation may be dynamic. Therefore, it is of great significance to propose a feasible tunnel arch repair structure and construction method. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a construction method for the ...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a construction method for the repair structure of the upper arch of the ballastless track railway tunnel, so as to solve the problem of repairing the deformation of the upper arch of the tunnel and having a long-term maintenance effect, and has better economy, convenient construction, Environmental protection and other characteristics

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