A measurement method for urban rail precision control network
A precision control and measurement method technology, applied in the direction of track, measuring instrument, track maintenance, etc., can solve the problems of low precision, inability to save for a long time, and difficulty in meeting the measurement requirements of high ride comfort of rail traffic, so as to achieve high relative accuracy and avoid The effect of error accumulation
Active Publication Date: 2016-06-01
CHINA TIESIJU CIVIL ENG GRP CO LTD
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Problems solved by technology
[0003] In order to avoid the shortcomings of the above-mentioned prior art, the present invention provides a measurement method for urban rail precision control network, which is used to improve the construction measurement accuracy of urban rail transit engineering and meet the construction requirements, so as to solve the problem of There are technical problems such as low precision, long-term storage, difficulty in operation and maintenance, and difficulty in meeting the measurement requirements of high ride comfort of rail transit
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[0023] The urban track precision control network measurement method of the present invention is to carry out as follows:
[0024] Step 1. Buried SCP control points
[0025] Each SCP control point A is buried on the two side walls of the urban rail transit structure as a permanent reference. The longitudinal distance between adjacent SCP control points A is 30-60m, and each SCP control point A is 0.7m- 1.2m, the SCP control points A located on the two side walls of the urban rail transit structure are arranged in pairs, and the longitudinal direction refers to the direction along the track;
[0026] Corresponding measures in specific implementation also include:
[0027] Each SCP control point should be buried in a stable, reliable, non-destructive and easy-to-measure place, and should be anti-freezing, anti-settling, anti-vibration and anti-movement. When embedding the embedded parts of the SCP control point, first horizontally drill a hole at the selected position, using a ...
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The invention discloses a precise control network measurement method of urban rails. The measurement method is characterized in that all SCPs A are buried in two side walls of urban rail transit structures to serve as permanent references. Through a total-station instrument and a measurement method of edge and corner intersection of free observation stations, each SCP has direction, distance and height difference observation data of four free observation stations, a line and slope regulating high-level control point is connected and measured about every other 300 m, and the measurement data are rigorously adjusted. Through the measurement method, the measurement precision of urban rail transit engineering construction can be effectively improved, a horizontal control network and a vertical control network can be combined and be permanently preserved, and the permanent references are provided for fine regulation, operation, maintenance and settlement monitoring of the rails in the later stage.
Description
technical field [0001] The invention relates to a measurement method for a precision control network of an urban track, more specifically, it is applied to the precision measurement of urban subway and tram engineering, and solves the problem of relative precision of the track. Background technique [0002] With the increasing development of modern society, rail transit has been closely related to people's lives, which requires rail transit to have high comfort, stability and safety. The stability and safety of trains also depend on the state of the track. An excellent measurement system is needed to ensure the track status of the line. At present, my country's subways use concrete cast-in-place monolithic ballast beds. In terms of track measurement control, the geometric alignment of the track is mainly controlled by means of track laying control benchmarks, encrypted benchmarks, and turnout track laying benchmarks. Since this kind of method does not adopt the method of st...
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IPC IPC(8): E01B35/00
Inventor 陈杰亮方涛涛殷业锁沈韫肖飞成卫海津
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD