Study on calculation method of the deviation of lining ring axis for shield tunnel
Dong Xiuzhu1 Zhu Zhankui2,3 Song Xiaolong2,3 Zhang Wenjun2,3,4
1. China Railway Design Group Corporation, Tianjin 300142, China; 2. School of Civil Engineering, Tianjin University, Tianjin 300354, China;
3. Key Laboratory of Coast Civil Structure Safety of the Ministry of Education, Tianjin University, Tianjin 300354, China;
4. Key Laboratory of Urban Underground Engineering of the Ministry of Education, Beijing Jiaotong University, Beijing 100044, China
Abstract：Shield tunnels used for rail rapid transit in soft soil areas are characterized by stricter line control, worse construction quality and more difficult in line precision control. In order to calculate the deviation of lining ring axis for shield tunnel quickly and accurately, firstly, based on the general form of metro line alignment and taking tunnel mileage as a link, the calculation method of three-dimensional coordinates of tunnel design axis (DTA) is given. Secondly, by means of dichotomy and continuous iteration, the theoretical position of deviation calculation point of lining ring corresponding to DTA is computed, and then the calculation method of plane deviation and elevation deviation of lining ring is proposed. Finally, combined with the line data of the Z2 line project of Tianjin Binhai New District, the calculation process and results of the deviation of lining ring are presented.
董秀竹 朱战魁 宋晓龙 张稳军. 盾构隧道衬砌环轴线偏差计算方法研究[J]. 土木工程学报, 2019, 52(S2): 149-154.
Dong Xiuzhu Zhu Zhankui Song Xiaolong Zhang Wenjun. Study on calculation method of the deviation of lining ring axis for shield tunnel. 土木工程学报, 2019, 52(S2): 149-154.
