Verification method for building boundary of shield tunnel in subway section
A technology for building boundaries and shield tunnels, which is applied to tunnels, earthwork drilling, mining equipment, etc., can solve the problems of unmatched cross-section mileage, uneven inside and outside, and heavy workload, so as to improve the efficiency of designers and reduce Check time and resolve time-consuming effects
Active Publication Date: 2022-07-29
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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Problems solved by technology
The existing methods mainly have the following problems: (1) It is necessary to manually identify the types of straight lines, circular curves, and transitional curves; (2) In the curved section of the shield circular tunnel, the method of offsetting the tunnel center to the inner side of the line center is used to solve the problem of track overshoot. The uneven displacement of the inner and outer sides caused by high
The existing method uses the linear gradient algorithm to calculate the offset, which cannot correspond to the mileage of the section, and the calculation result is inaccurate; (3) involves manual screening and calculation of the Excel table, which is time-consuming, laborious and error-prone; (4) requires Manually write the limit verification report, which is inefficient and heavy workload
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[0039] The present invention will be described in detail below with reference to specific embodiments.
[0040] The invention relates to a method for checking the construction boundary of a shield tunnel in a subway section, which specifically includes the following steps:
[0041] S1: In the section of the shield tunnel in the subway section, a reference coordinate system is established with the rail surface as the horizontal axis and the line center line as the vertical axis. The horizontal axis is used to represent the horizontal distance value, and the vertical axis is used to represent the elevation value;
[0042] S2: Select point P on the inner wall of the tunnel 1 ~P 8 It is the main measurement point, which is measured by the measurement unit and provides the measurement data Excel table;
[0043] S3: Use the C# program to read the Excel table information and calculate the measuring point P 1 , P 2 Elevation value and measuring point P 3 ~P 8 horizontal distance...
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The invention relates to a method for checking the architectural boundary of a shield tunnel in a subway section. The steps include: establishing a reference coordinate system on a section of a shield tunnel in the subway section; selecting measuring points on the inner wall of the tunnel, measuring and providing an Excel table of measurement data; Calculate the elevation value at the top and bottom measuring points and the horizontal distance value at the left and right measuring points; identify the straight line segment, circular curve segment, and transition curve segment mileage of the interval tunnel in the measurement data, read the offset of the circular curve segment, and Calculate the offset of the easing curve segment by interpolation method; calculate the building limit of each measuring point, compare the calculated building limit with the measured data, and judge whether the tunnel section has the measuring point intrusion. The method can quickly and accurately calculate the limit offset of the curved tunnel, accurately calculate the limit design value, and automatically generate a verification report, which greatly improves the accuracy and verification efficiency of the limit verification.
Description
technical field [0001] The invention relates to the technical field of subway engineering design, in particular to a method for checking the architectural boundaries of shield tunnels in subway sections. Background technique [0002] The subway boundary is the graphics, coordinate parameters and outline dimension lines to ensure the safe operation of the subway, limit the size of the vehicle section, limit the installation size of equipment along the line, and determine the effective clearance size of the building structure. Due to the different functions of subway vehicle operation, equipment installation, civil engineering and other stages, the subway boundary is divided into vehicle boundary, equipment boundary, and building boundary. [0003] The building boundary is located outside the equipment boundary. Considering the minimum effective boundary after the equipment is installed, any permanently fixed buildings along the line, including construction error value, measur...
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IPC IPC(8): E21D9/06E21D9/14
CPCE21D9/06E21D9/14
Inventor 狄仕磊陆刚张金林许敬辉邱鸣陈园陈晖薛倩邵怡然刘佳林
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP