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Trackless precise measurement method for catenary suspension point position in subway tunnel

A catenary and hanging point technology, applied in geometric CAD, word processing, overhead lines, etc., can solve problems such as restricting the construction progress of catenary, and achieve the effects of improving measurement efficiency and accuracy, improving economic benefits, and reducing impact.

Active Publication Date: 2022-05-06
中铁建电气化局集团第三工程有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a trackless precise measurement method for the suspension point position of the catenary in the subway tunnel, so as to solve the problem that the track laying progress seriously restricts the construction progress of the catenary during the subway construction

Method used

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  • Trackless precise measurement method for catenary suspension point position in subway tunnel
  • Trackless precise measurement method for catenary suspension point position in subway tunnel
  • Trackless precise measurement method for catenary suspension point position in subway tunnel

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Embodiment Construction

[0032] The present invention includes the following steps.

[0033] Firstly, the technical data is compiled, and the mileage of each positioning point is calculated according to the catenary layout diagram, and the relationship between the line mileage and coordinates is obtained according to the line information provided by the design institute (such as curve elements, broken links, and fork positions, etc.). The relationship between mileage and coordinates is back calculated to obtain the coordinate data of each positioning point, and the results are summarized to form a measurement technical data table.

[0034] Then measure and mark the center of the line on the ground of tunnel 1. The operator of the total station observes the prism in real time according to the coordinates X and Y of the positioning point in the measurement table, and guides the operator to move to the precise position, and the assistant makes a mark at this position (the center mark M of the ground line...

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Abstract

The invention relates to a trackless precise measurement method for the position of catenary suspension points in a subway tunnel. Firstly, the coordinates of each positioning point are determined, and then the positioning points are marked on the tunnel ground in the tunnel to form a mark that the center of the line is on the tunnel ground, and then The line center mark point on the tunnel ground is plumb projected on the tunnel top surface, the offset is calculated by formula, and the offset is expressed in the form of arc length. Calculate the superelevation of different anchor points, mileage, and the offset of the projection of the center of the pantograph on the top surface of the tunnel through the program, and combine the program with the Excel table. During construction, directly enter the anchor point and mileage in the form to obtain the corresponding superelevation and the offset of the projection of the center of the pantograph on the top surface of the tunnel relative to the center of the line, and measure the arc length to obtain the curve segment The projection position of the center of the pantograph on the top surface of the tunnel. After obtaining the projection position, the hole can be drilled according to the position of the point and the punching mold.

Description

technical field [0001] The invention relates to a catenary installation technology in a tunnel, in particular to a trackless precise measurement method for the suspension point position of the catenary in a subway tunnel. Background technique [0002] At present, the domestic urban rail transit industry is booming, and many cities have begun to build subways. At present, domestic subway projects generally have the characteristics of short construction period and concurrent construction of multiple units. Some subways use catenary power supply (non-contact rail power supply), and the track and catenary form do not interfere with each other, but there are overlaps in construction, especially the technical parameters of the catenary rely more on the track as the basis, but the progress of track laying often cannot meet the requirements. The catenary construction node requirements seriously restrict the catenary construction progress. In order to solve this problem, it is urgen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F40/18B60M1/28
CPCG06F30/13G06F40/18B60M1/28
Inventor 王天龙陈宪祖焦国栋张望周鹏林杨刚刘春雨耿藏军张海生刘伟伟张兵涛周成林陈新方郭晓巍苟海滨
Owner 中铁建电气化局集团第三工程有限公司
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