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Research on Design Parameters for Shield Tunnel Lining Structure with Quick Connectors
(1 Department of Geotechnical Engineering, Tongji University, Shanghai 200092; 2 Shanghai Tunnel Engineering & Rail Transit Design and Research Institute, Shanghai 200235)
Abstract Mechanical performances of segment joints are the key factors affecting the design parameters of shield tunnel lining structures, and the performances of the joints using quick connectors are not yet clear. With reference to the research and application cases of quick-connectors used for the shield tunnel lining in foreign countries, the key parameters like bending stiffness of longitudinal joints, shear stiffness of longitudinal and circumferential joints are studied by load tests on segment joints adopted in Shanghai natural gas pipeline project. A beam-spring method based analysis model for three segment lining rings with the staggered joints is established and the specific value ranges of the key model parameters are given considering the test results. Finally the stiffness reduction factor and bending moment transfer coefficient of the modified routine model of the lining structure using quick-connectors are proposed based on the calculation and comparison.
Abstract：
Mechanical performances of segment joints are the key factors affecting the design parameters of shield tunnel lining structures, and the performances of the joints using quick connectors are not yet clear. With reference to the research and application cases of quick-connectors used for the shield tunnel lining in foreign countries, the key parameters like bending stiffness of longitudinal joints, shear stiffness of longitudinal and circumferential joints are studied by load tests on segment joints adopted in Shanghai natural gas pipeline project. A beam-spring method based analysis model for three segment lining rings with the staggered joints is established and the specific value ranges of the key model parameters are given considering the test results. Finally the stiffness reduction factor and bending moment transfer coefficient of the modified routine model of the lining structure using quick-connectors are proposed based on the calculation and comparison.
LIU Xian1 LI Haitao1 GUAN Panfeng2 YANG Zhihao2
.Research on Design Parameters for Shield Tunnel Lining Structure with Quick Connectors[J] MODERN TUNNELLING TECHNOLOGY, 2019,V56(6): 19-26
2019, Vol. 56 