Track slab fine adjustment method and track laying method based on this method

Abstract

The invention provides a track slab fine adjustment method for China railway track system (CTRS) I-type ballastless track laying. A CTRS I-type ballastless track comprises a base (5), cement emulsion asphalt mortar (4), a track slab (3) and a steel rail which are stacked with one another from top to down, and fasteners (2) which are fixed in bolt holes in the track slab and used for fastening the steel rail and convex flanges (6) positioned between longitudinal ends of the track slab. The method comprises the following steps of: establishing a control point (CP) III point control network according to a provided CP I and a provided CP II; arranging a track slab reference point (GRP) positioned in the center of each convex flange (6) according to the CP III; placing a measurement standard frame with a prism on the track slab to be measured; arranging a universal theodolite measurement station at the GRP of the track slab; and measuring the prism through a universal theodolite and finely adjusting the track slab according to the measured data. The invention also relates to a CTRS I-type ballastless track laying method.

Description

technical field [0001] The invention relates to a track slab fine adjustment method, in particular to a track slab fine adjustment method for laying CTRS I type ballastless track. The invention also relates to a ballastless track laying method based on the track plate fine adjustment method, especially a CTRS I type ballastless track laying method. Background technique [0002] With the development of China's high-speed railway, ballastless track has been used more and more widely. Compared with ballasted track, ballastless track is characterized by the use of track slabs instead of cement or wooden sleepers. China's ballastless track slabs mainly include three types, namely CTRS (China Railway Track System, that is, China Railway Track System) Type I, II, and III. Among them, CTRS I-type ballastless track (track slab) is widely used, and many high-speed railways including Shanghai-Nanjing high-speed railway use I-type ballastless track. [0003] During the laying of the ...

AI Technical Summary

Problems solved by technology

The above-mentioned scheme of adjusting the track slab has obvious disadvantages. First, when the track slab is fine-tuned and measured, the total station needs to set up stations at will and change stations for measurement, which is easy to form station-to-station errors that are difficult to eliminate (above 1mm ), resulting in short-wave irregularity errors between the fine-tuning slab sections completed by each erection station; secondly, it is difficult to measure and control the overlap between the slabs with this fine-tuning method. After the fine-tuning is completed, each track slab has its own The independent spatial coordinates of the ballastless track are not conducive to the overall microwave ride comfort control of the ballastless track; third, this fine-tuning method will cause a relatively large workload of fine-tuning the geometric state of the track after track laying

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