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Precision measurement method of underline engineering during station yard transformation

A precision measurement and construction technology, applied to radio wave measurement systems, measurement devices, measuring instruments, etc., can solve the problems of difficulty in meeting the overall construction measurement requirements, low measurement accuracy, and poor visibility of wire points, so as to reduce observation intensity , reduce technical difficulty and avoid gross errors

Active Publication Date: 2013-10-23
THE 4TH CONSTR ENG CO LTD OF CHINA RAILWAY NO 4 ENG GRP
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Problems solved by technology

[0004] The present invention is to avoid the deficiencies in the above-mentioned prior art, and to provide a precision measurement method for offline engineering construction in station yard renovation construction, which is used to improve the measurement accuracy of station yard offline engineering construction and meet the construction requirements, so as to solve the problem of During the construction measurement under the field line, there are technical problems such as poor visibility of the conductor point, low measurement accuracy, and difficulty in meeting the overall construction measurement requirements

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  • Precision measurement method of underline engineering during station yard transformation
  • Precision measurement method of underline engineering during station yard transformation
  • Precision measurement method of underline engineering during station yard transformation

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Embodiment Construction

[0035] see figure 1 , figure 2 and image 3 , in the present embodiment, the offline engineering precision measurement method in the station renovation construction is carried out according to the following steps:

[0036] 1. Lay out the construction control network of offline engineering stations

[0037] Considering the impact of initial calculation data errors on the relative point accuracy of conductors when the station construction control network is restored in multiple phases, multiple control points are buried outside the construction scope of the station according to the CPII embedding requirements of the line plane control network. The specific implementation method is: at the two ends of the outer sides of the construction area of ​​the station, from one end to the other end, select a bearing layer within 50-100 meters from the center of the line, 30 cm below the permafrost without voids and quicksand, and use cast-in-place concrete to wrap it. Stainless steel c...

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Abstract

The invention discloses a precision measurement method of underline engineering during station yard transformation. The method is characterized in that station yard external control points A1, A2, A3 and A4 are successively arranged from one end to the other end at two ends of the outer side within the station yard construction range, and a GPS technology is used for measurement; the station yard external control points A1, A2, A3 and A4 are attached to the known basic plane control network CPI and line plane control network CPII, so that the accuracy loss caused by the starting point of the construction control network of a later-period total station yard, and the plane control measurement network used is unified in the same plane control network. The method is applied to improving the construction measurement accuracy and meeting requirement of the underline engineering of the station yard, and solves the technical problems that the intervisibility of a traverse point is poor, the measurement accuracy is low and the overall construction measurement requirement can be hardly met are solved during underline measurement.

Description

technical field [0001] The invention relates to a precision measurement method for off-line engineering in the reconstruction construction of a station, in particular to a precision measurement method in the reconstruction construction of a station. Background technique [0002] With the rapid development of my country's national economy, the requirements for railway transportation capacity are also continuously increasing. New railway passenger stations and renovation of existing railway yards have become important solutions to improve railway transportation capacity at this stage. In the offline construction of new stations or renovation of existing stations, due to the complexity of the construction environment, the accuracy requirements for construction measurement are also more stringent. If the accuracy of construction measurement is low, there will be technical accidents such as insufficient and staggered clearance boundaries between offline engineering and track engi...

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Application Information

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IPC IPC(8): G01C15/00G01S19/42
CPCG01C15/00G01S19/42
Inventor 胡劲辉周菲李明张学云程庆龙邵磊杨国应
Owner THE 4TH CONSTR ENG CO LTD OF CHINA RAILWAY NO 4 ENG GRP
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