Paving method of CRTS I type plate type ballastless track slab in severe cold region

Abstract

The invention provides a paving method of a CRTS I type plate type ballastless track slab in a severe cold region, which sequentially comprises the following steps of: building a roadbed and a CPIII control network, processing the surface of the roadbed, measuring during construction, constructing a base, constructing a convex baffling table, processing the surface layer of the base, paving a CA mortar pouring bag, paving a track slab, precisely adjusting the track slab, pouring CA mortar, arranging a resin pouring bag around the convex baffling table, pouring resin around the convex baffling table, and cleaning a work surface. The step of precisely adjusting a track slab adopts a prism frame method. The prism frame method comprises the following steps of: arranging two measuring frames at positions of screw bolt holes at the two ends of each track slab after building a CPIII control point; measuring a spherical prism on the frame after freely stationing a total station, wherein measured data represents a practical three dimensional coordinate of the track slab; counting the difference value between a theoretic three dimensional coordinate value and a practically-measured three dimensional coordinate value; precisely adjusting the track slab with a bidirectional adjustor untill that the difference value meets the criterion requirement. The CRTS I type plate type ballastless track slab which is paved with the method can meet the characteristic of the climate in the severe cold region.

Description

technical field [0001] The invention relates to a construction method for laying CRTS I-type slab ballastless track slabs in severe cold regions. Background technique [0002] CRTS (China Railway Track System, that is, China Railway Track System) I-type slab ballastless track structure is composed of figure 1 As shown, from top to bottom are: rail 1, elastic split fastener 2, track slab 3, cement emulsified asphalt mortar (hereinafter referred to as CA mortar) filling layer 4 and concrete base 5, and the end of track slab 3 has a convex Shape block 6, convex block 6 functions such as positioning, fixing, anti-floating, and the periphery of convex block 6 is filled with resin. [0003] Usually, the CRTS I-type slab ballastless track slab laying method includes the following steps in turn: establishment of subgrade and CPIII control network, base surface treatment, construction survey, base construction, convex abutment construction, base surface treatment, CA mortar filling ...

AI Technical Summary

Problems solved by technology

[0004] In severe cold areas, the annual temperature difference is large, and the seasonal snow damage and freezing damage are extremely serious. There are higher requirements for the accuracy and quality of CRTS I-type slab ballastless track slab laying. Using the conventional CRTS I-type slab ballastless track slab laying method Unable to meet the special requirements of severe cold regions

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