Steel rail temporary fixing structure and longitudinal blocking groove block installation and construction method

Abstract

The present invention relates to a steel rail temporary fixing structure and a longitudinal blocking groove block installation and construction method. The steel rail temporary fixing structure comprises a plate body, a steel rail assembly, the temporary fasteners and the noise reduction blocks, the steel rail assembly comprises a steel rail, and the top face of the plate body is provided with a rail bearing groove formed in an inwards-concave manner. The steel rail is arranged in the rail bearing grooveand is fixed to the plate body through the temporary fasteners, the noise reduction blocksare installed between every two longitudinally-adjacent temporary fasteners and at the inner side and the outer side of the steel rail, the bottoms of the noise reduction blocks are embedded between the steel rail assembly and the groove wall of the rail bearing groove, and the tops of the noise reduction blocks extend to the positions below a rail head. The steel rail temporary fixing structure and the longitudinal blocking groove block installation and construction method are suitable for temporarily fixing the steel rail during the construction process of a continuous supporting rail system, after a rail line is stabilized, the temporary fasteners are disassembled, then the longitudinal blocking groove blocks are installed, and a polymer damping material is poured to fix the steel railassembly permanently, so that the steel rail can be supported and locked continuously, the vibration source generated by the steel rail under the external forces can be eliminated basically, the wheelrail contact relation can be improved, the abrasion of a wheel rail is greatly reduced, and the service life of the wheel rail is prolonged.

Description

technical field [0001] The invention relates to the technical field of railway tracks, in particular to a temporary rail fixing structure and a construction method for installing longitudinal groove blocks. Background technique [0002] The track slab refers to a new type of under-rail component whose structure is a slab body, used to support and fix the rail, and distribute the load transmitted by the train through the rail to the sub-slab base. [0003] Double-block ballastless track, CRTS I type, CRTS II type, CRTS III type slab ballastless track are all used in my country's high-speed railway or passenger dedicated line. Among them, the track slabs of CRTS I, CRTS II and CRTS III slab ballastless tracks are all prestressed structures. [0004] The current rail system uses fastener system to support the rail. The fastener system supports the rail discontinuously. The rail has a suspended section. When the train runs on the rail at a certain speed, the rail will produce a...

AI Technical Summary

Problems solved by technology

[0004] The current track system uses fastener system to support the rail. The fastener system supports the rail discontinuously. The rail has a suspended section. When the train runs on the rail at a certain speed, the rail will generate a pinned-pinned vibration mode. The wheel-rail contact relationship is not good, and the rail wears a lot

If the fastener system is canceled and the continuous support track system is adopted, the initial commissioning and later maintenance and replacement of the rails will be very difficult.

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