Construction method of cast-in-place ballastless track monolithic track bed in tunnel and used construction equipment

Abstract

The invention provides a construction method of a cast-in-place ballastless track monolithic track bed in a tunnel and used construction equipment. The construction equipment comprises a hoisting portal frame, rail fine adjustment equipment, a movable concrete pumping machine, a pump pipe, a movable concrete pouring device and a plurality of pump pipe pushing trolleys. The hoisting portal frame issmall and exquisite in structure and can be used for rail material transportation in a narrow space area. In the invention, the concrete pumping machine, the concrete pouring device and the pump pipecan move along a steel rail; a problem of long-distance accurate pouring of concrete in a track transit interval can be solved; and the concrete pouring device can reduce a concrete pumping speed, and 360-degree dead-corner-free material distribution is achieved. Material distribution precision is improved, concrete pollution is avoided, construction efficiency and flexibility of a ballastless track are improved, and the method and the equipment can be applied to special environments such as tunnels with a limited space and complex terrains to carry out ballastless track construction.

Description

technical field [0001] The invention belongs to the field of ballastless track construction, and in particular relates to a construction method and system for an integral ballast bed of cast-in-place ballastless track in a tunnel. Background technique [0002] At present, domestic railways and urban tracks mostly use the method of cast-in-place integral ballast bed for track engineering operations. The construction steps are generally divided into three: one is the entry and transportation of track materials, specifically, rails, fasteners, sleepers, steel bars, etc. The track materials are transported back to the construction area by cranes or flatbed trucks or mobile door cranes, and spliced ​​and installed. The second is the fine adjustment of the track support. Specifically, after the track materials are in place, sleeper layout, fastener installation, rail installation, use of the support frame to lift the rail row, binding steel bars, erecting the formwork, and using m...

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Problems solved by technology

[0004] The present invention aims at the problems existing in the construction of the existing ballastless track, and provides a construction method and the construction equipment used for the integral ballast bed of the cast-in-place ballastless track in the tunnel. The construction method uses a special material transportation device and a concrete pouring device to solve the problem In complex environments such as shield tunnels with complex terrain and limited space, the problems of transportation of track construction materials and pouring of track bed, increase the range and accuracy of concrete distribution, and improve the efficiency of track construction

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