A construction method for an assembled slab track structure

Abstract

The invention discloses a fabricated and board formed track structure. The fabricated and board formed track structure comprises steel tracks (1), fasteners (2), a track board (3), a viscoelastic cushion layer (4), a base (5), a track foundation (6), isolation layers (7) and limit pins (8), wherein the base (5) is located on the track foundation (6), the viscoelastic cushion layer (4) is located between the track board (3) and the base (5), and a post-pouring levelling layer is not arranged on the track board (3); and structures are arranged at the two sides of the track board (3), and in each structure, a drainage ditch is arranged or concrete is filled to be level with the track board (3), and one isolation layer (7) is arranged between the track board (3) and the structure. Track construction organization is flexible, the number of track-laying bases can be reduced, a track-laying construction period can be reasonably shortened to reduce the total construction period pressure of construction of a track transportation project, and progress acceleration is facilitated on the premise of ensuring the quality of the track project under special circumstances. The fabricated and board formed track structure has obvious social benefits and economic benefits.

Description

technical field [0001] The invention relates to the technical field of rail transit engineering, including rail structures of high-speed railways, national railways, urban railways and urban rail transits, in particular to a construction method for assembling a slab-type rail structure. Background technique [0002] Large-capacity, energy-saving, environmentally friendly, safe and fast rail transportation. The track is the foundation of the transportation equipment. The track directly bears the load of the train and guides the train to run. The track structure must have sufficient strength and stability. Track laying is one of the key links in the construction of rail transit projects. The start of track engineering and the milestone node goal of rail transit, the start of track laying marks the phased results of rail transit construction, and the various "points" of civil engineering in stations and intervals Connecting the track projects connecting the previous and the nex...

AI Technical Summary

Problems solved by technology

This traditional upside-down track construction method has a high labor intensity for the cast-in-place ballast bed, and there are many links that affect the track construction progress.

Even if prefabricated track slabs are used, although cast-in-place concrete is not used to construct the track bed, filling self-compacting concrete or CA mortar between the slab and the foundation is also a reverse track construction method, which is also subject to the transportation conditions of filling materials in the tunnel and the fluidity of filling materials with fast curing requirements

Images