Ballastless track construction method with sleepers arranged firstly and rail panel assembled later

Abstract

A ballastless track construction method with sleepers arranged firstly and rail panel assembled later comprises the steps of construction layout, installation of steel bars at a bottom layer of a track bed, dispersion of the sleepers and spacing adjustment, assembly of hoisted rail panel frames, coarse adjustment of rail panels, installation of steel bars at top layers of track bed boards, installation of longitudinal and transverse formworks, comprehensive grounding welding, insulating property test, fine adjustment of the rail panels, concrete pouring construction, concrete curing and removal of bent frame molds. According to the construction method, a method that a gantry crane is used for assembling the rail panels on a mobile assembly platform is changed, a method that the sleepers are arranged firstly and the rail panels are assembled later on a construction operation surface is adopted directly, the usage of the mobile assembly platform is canceled, the problem of land occupation of the mobile assembly platform is solved, and the field change efficiency of other machines, tools and equipment is improved, in addition, a crane instead of the gantry crane is used for matching assembly, so that the gantry crane is mainly used for transferring other light machines, tools and equipment, the safety of transferring hoisting is improved, the continuous construction is guaranteed, the effective utilization rate of the gantry crane is increased, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to a construction method of a ballastless track, in particular to a ballastless track construction method of a CRTS Ⅰ type double-block ballastless track, which first lays sleepers and then assembles rail rows. Background technique [0002] The current double-block ballastless track generally adopts the simple rail arrangement method (tool rail method), the double-beam rail arrangement frame method, and the single-beam rail arrangement frame method for construction. Among them, the latter two are more commonly used. The single-girder type rail row frame method is to use a steel horizontal single beam to connect two standard tool rails into a whole frame, use a screw adjuster supported on the rails to adjust the elevation and level, and pour concrete after fine adjustment to form a ballastless track Whole track bed. The difference between the double-beam rail-bar frame method and the single-beam rail-bar frame method is that the ...

AI Technical Summary

Problems solved by technology

Setting up a mobile assembly platform occupies a large site, which not only affects the storage of other machinery and equipment, but also affects the construction efficiency due to the long distance of logistics organization and operation. In addition, the door crane is required for the assembly and lifting process of the rail bent frame, which requires high safety control. , which also increases the difficulty of construction

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