Method for determining strut positions of contact network of special railway line for passenger traffic

Abstract

The invention discloses a method for determining strut positions of a contact network of a special railway line for passenger traffic, solving the problem of low accuracy in the prior art for surveying and lofting the strut positions of the contact network. The method comprises the following steps of: obtaining the coordinates of all CPIII points to serve as survey datum for railway line and related line parameters under a coordinate system of a foundation pile control network CPIII; when a central point C of the railway line is located in a linear, smooth curved and round curved railway lines, respectively calculating the coordinates of the central point C of the railway line; and lofting the coordinates, measuring a distance between the point C to a strut P to serve as a strut side face limit value by using a steel measure tape on a CP linear direction vertical to a railway central line, so as to determine the specific position of the strut P, wherein a rail surface elevation H, calculated in the second step, of the central point C of the railway line is taken as a reference in survey and lofting. By adopting a CPIII coordinate measurement construction method, the advantages of greatly accelerating measurement speed, improving measurement precision and saving cost are achieved.

Description

technical field [0001] The invention relates to a method for surveying and measuring the position of a catenary support for power supply in the construction of an electrified railway passenger dedicated line. Background technique [0002] In the construction process of electrified railway power supply network, the construction period is generally required to be short, especially the survey and measurement of catenary pillars, which are often carried out before the railway track has been laid. The traditional measurement of catenary pillars is carried out based on the data of the line center pile provided by the construction unit in the early stage. It is necessary to set many straight 100-meter piles and curved five control piles as reference objects in the center of the railway line. Due to poor conditions at the construction site, construction work is carried out across forks, and these reference piles are often damaged or placed far away from the railway line in order to ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for measuring the position of catenary pillars on passenger dedicated lines, which solves the problems of low accuracy, repeated corrections, many workers required and long construction periods in the prior art when surveying and setting out catenary pillar positions question

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