Trackless accurate measurement method for position of contact network suspension point in subway tunnel

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

Active Publication Date: 2021-03-19
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 subwa

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  • Trackless accurate measurement method for position of contact network suspension point in subway tunnel
  • Trackless accurate measurement method for position of contact network suspension point in subway tunnel
  • Trackless accurate measurement method for position of contact network suspension point 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 accurate measurement method for the position of a contact network suspension point in a subway tunnel, and the method comprises the steps: determining the coordinate of each positioning point, marking the positioning points on the tunnel ground in the tunnel to form a mark of a line center on the tunnel ground, and projecting a plumb bob of a line center marking point on the tunnel ground on the top surface of the tunnel; and calculating the offset through a formula, and enabling the offset to be expressed in an arc length form. The superelevation of different positioning points and mileage and the offset of the projection of the center of the pantograph on the top surface of the tunnel are calculated through a program, and the program is combined withan Excel table. During construction, a positioning point and mileage are directly input into the table, the corresponding offset of the projection of the center of the pantograph on the top surface ofthe tunnel relative to the center of a line can be obtained, the projection position of the center of the pantograph on the top surface of the tunnel at a curve section can be obtained by measuring the arc length, and after the projection position is obtained, punching can be carried out according to the position of the point and the punching die.

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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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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