Existing line three-dimensional restriction measuring method

Abstract

The invention provides a method for measuring the three-dimensional constrains of the existing line, which is characterized in that the operation method comprises the steps as follows: (1) a track constraining pile is arranged along the railway track and can carry out simultaneous detection and adjustment to a three-dimensional measurement benchmark net of the existing line; (2) a track detection car with a track constrain pile measurement function is parked at a track marking point corresponding to the track constrain pile; and transverse offset and vertical offset between the central line of the track and the track constrain pile are measured and calculated by a computer; (3) according to the coordinates of the track constrain pile and track line parameters, the practically measured coordinates of the track central line are inversely calculated; and (4) according to the track line parameters, the transverse offset and the vertical offset between the practically measured coordinates of the track central line and the theoretical coordinates of the central line are calculated and the sound and light alarm can be carried out according to the field overrun; and the method has the advantages that a total station instrument is not required, and the whole measurement device has compact structure, simple operation, high measurement efficiency, good adaptability for environment and climate conditions, low cost and meets the requirements of detection and measurement of engineering affairs of the existing line.

Description

technical field [0001] The invention relates to a measurement method, in particular to a three-dimensional constraint measurement method for an existing line. Background technique [0002] The three-dimensional precision measurement of existing lines is a development idea of ​​existing line track measurement technology that is being brewed by the Ministry of Railways. Prior to this, existing lines adopted relative roughness detection technology and established relevant industry standards and equipment systems. The new track has been proposed in the construction and a three-dimensional positioning and measurement technology system for the track has been gradually established. However, since the existing line works under the opening state, directly transplanting the three-dimensional measurement technology used in the new track to the maintenance and repair measurement of the existing line will be greatly affected and limited by the operation time, efficiency and cost, and ca...

AI Technical Summary

Problems solved by technology

[0005] Existing lines use track piles for track control, and some simple tools such as tape measure, flat ruler or laser range finder with digital display can be used for manual measurement, but there is no public report of digital three-dimensional restraint measurement trolley for existing lines product

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