Preset correction positioning method for cast-in-place ballastless ballast bed sleepers in curved sections

Abstract

The present invention is specifically a method for preset correction and positioning of cast-in-place ballastless ballast bed sleepers in curved sections, which solves the problem of large adjustment workload, low work efficiency, and problems in the existing construction method of substituting broken lines for curves when the curve radius is small. The problem of high cost and distortion of measurement and control data. A method for preset correction and positioning of a cast-in-place ballastless ballast bed sleeper in a curved section, the method comprising the following steps: 1) compiling a sleeper installation error table and a rail row adjustment operation correction table; 2) marking the sleeper installation position on a tool rail; 3) Assemble the rail row by using the special-shaped gauge block; 4) Adjust the position of the tool rail by using the fine-tuning trolley; 5) Correct the measurement data; 6) Pouring the concrete of the track bed. The invention realizes the purpose of sleeper preset and measurement and control data correction, effectively improves construction efficiency, reduces construction cost, solves the problem of measurement and control data distortion, and effectively improves construction quality.

Description

technical field [0001] The invention relates to a positioning method for railway construction, in particular to a preset correction positioning method for a cast-in-place ballastless ballast bed sleeper in a curved section. Background technique [0002] In high-speed railway and urban track (subway) projects, the construction of cast-in-place ballastless ballast bed adopts the method of combining tool rails and sleepers into rail rows, and uses precise measurement methods to accurately position the tool rails in space, thereby indirectly determining the size of the sleepers. Then pour concrete to permanently consolidate the sleepers in the ballast bed, and replace the working rails to form a formal line. [0003] At present, in the construction of cast-in-place ballastless ballast bed, there is a type of shaped tooling called combined bent frame, which consists of two tool rails, multiple connecting beams, multiple vertical support screws and multiple oblique support rods, e...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of large adjustment workload, low work efficiency, high cost and distortion of measurement and control data in the existing construction method of substituting broken lines for curves in working conditions with small curve radii, the present invention provides a cast-in-place ballastless construction method for curved sections. The Preset Correction Positioning Method of Ballast Bed Sleeper

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