Calculation method adjustment amount of prefabricated track plate bearing platform

Abstract

The invention belongs to the technical field of track plate bearing tables, and relates to a calculation method for the adjustment amount and fine adjustment coordinates of a prefabricated track platebearing table, which is suitable for high-speed railways, inter-city railways, urban railways and urban rail transit slab ballastless tracks. The method can accurately calculate the fine adjustment coordinates of the track plate and the adjustment amount of the track bearing table of the curve track plate, is wide in application range, and can be suitable for different line conditions including complex line conditions such as spanning a vertical curve, a straight slow point and a slow round point. The method is simple in calculation, coordinate conversion between a two-dimensional rectangularcoordinate system and a three-dimensional rectangular coordinate system is adopted, the calculation efficiency is high, and the calculation result is accurate.

Description

technical field [0001] The invention belongs to the technical field of track slab bearing platforms, and relates to a calculation method for the adjustment amount and fine adjustment coordinates of a prefabricated track slab bearing platform, which is suitable for high-speed railways, intercity railways, urban railways and urban rail transit slab-type ballastless tracks. Background technique [0002] High-speed railways, intercity railways and urban rail transit slab ballastless tracks are generally composed of steel rails, fasteners, prefabricated track slabs, isolation layers and sub-slab foundations. figure 1 . [0003] In order to reduce the initial adjustment of fastener direction and height in curved areas, and provide sufficient adjustment space for maintenance and repair in the operation stage, the track slab adopts one-dimensional (horizontal) and two-dimensional (vertical and lateral) adjustable rail support platforms. The formwork is used for production, so as to...

AI Technical Summary

Problems solved by technology

In the prior art, the vertical and lateral adjustments of track slabs in curved sections are generally approximated by using a simplified model. The simplified model calculates the plane and elevation separately, and can approximate the adjustment of curved track slabs. measurement and positioning bolt hole space coordinates, but it is difficult to obtain accurate results under complex line conditions

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