Underline engineering precision measurement method used in station yard transformation construction
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: 2015-07-15
THE 4TH CONSTR ENG CO LTD OF CHINA RAILWAY NO 4 ENG GRP
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[0005] The present invention is to avoid the shortcomings of the above-mentioned prior art, and to provide a precision measurement method for offline engineering construction in station yard reconstruction and to meet construction requirements, so as to solve the problem of in-station 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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[0036] See figure 1 , figure 2 with image 3 In this embodiment, the precision measurement method of offline engineering in station yard reconstruction construction is carried out as follows:
[0037] 1. Lay out the construction control network of the offline engineering station
[0038] Considering that when the station construction control network is restored in multiple phases, the error of the starting data will affect the accuracy of the relative point position of the conductor. According to the CPII burying requirements of the line plane control network, multiple control points are buried outside the construction scope of the station yard. The specific implementation method is: at the outer ends of the construction scope of the station yard, from one end to the other end, within 50-100 meters from the center of the line, 30cm below the frozen soil, on the bearing layer without voids and quicksand, use cast-in-place concrete. The stainless steel cross-wire piles and the area...
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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
[0001] This application is the application number: 2013102990336. The application date is July 16, 2013. The title of the invention is a precision measurement method for offline engineering in station reconstruction construction. The applicant is a divisional application of China Railway Fourth Bureau Group Construction Engineering Co., Ltd. Technical field [0002] The invention relates to a precision measurement method for offline engineering in station yard reconstruction construction, and more specifically to a precise measurement method in station yard reconstruction construction. Background technique [0003] With the rapid development of my country's national economy, the requirements for railway transportation capacity have also continued to increase. Newly built railway passenger stations and the transformation of existing railway yards have become important solutions for improving railway transportation capacity at this stage. In the construction of new station yard or ex...
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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