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R. Li, Y. Yuan, "Seismic Response of Tunnel-group Metro Station in a Rock Site", in P. Ivanyi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Seventeenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 6, Paper 12.2, 2023, doi:10.4203/ccc.6.12.2

Keywords: seismic response, tunnel-group, rock site, metro station, connecting passages, peak internal force.

Abstract

The cross-section and stiffness transition of the structure are the weak points of the seismic resistance of underground structures. In order to study the seismic response of the tunnel-group metro station in rock site, a three-dimensional finite element model of the rock-station system was established using the dynamic time-history method. Horizontal and longitudinal seismic waves were inputted, and the peak internal force response of the weak parts of the station, horizontal connecting passages, and vertical connecting passages were analysed. The results show that the stress concentration phenomenon of the station structure is related to the direction of the input seismic wave; the peak values of bending moment and axial force at the junction of the connecting passages are dominated when the earthquake transversal excitation, and the peak shear force is dominated when earthquake longitudinal excitation; the horizontal connecting passage 4 and the lower section of the vertical connecting passages are unfavourable parts of the structure under stress.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 6 PROCEEDINGS OF THE SEVENTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: P. Ivanyi, J. Kruis and B.H.V. Topping Paper 12.2 Seismic Response of Tunnel-group Metro Station in a Rock Site R. Li¹ and Y. Yuan^1,2 ¹Department of Geotechnical Engineering, Tongji University, Shanghai, China ²Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China doi:10.4203/ccc.6.12.2 Full Bibliographic Reference for this paper R. Li, Y. Yuan, "Seismic Response of Tunnel-group Metro Station in a Rock Site", in P. Ivanyi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Seventeenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 6, Paper 12.2, 2023, doi:10.4203/ccc.6.12.2 Keywords: seismic response, tunnel-group, rock site, metro station, connecting passages, peak internal force. Abstract The cross-section and stiffness transition of the structure are the weak points of the seismic resistance of underground structures. In order to study the seismic response of the tunnel-group metro station in rock site, a three-dimensional finite element model of the rock-station system was established using the dynamic time-history method. Horizontal and longitudinal seismic waves were inputted, and the peak internal force response of the weak parts of the station, horizontal connecting passages, and vertical connecting passages were analysed. The results show that the stress concentration phenomenon of the station structure is related to the direction of the input seismic wave; the peak values of bending moment and axial force at the junction of the connecting passages are dominated when the earthquake transversal excitation, and the peak shear force is dominated when earthquake longitudinal excitation; the horizontal connecting passage 4 and the lower section of the vertical connecting passages are unfavourable parts of the structure under stress. download the full-text of this paper (PDF, 10 pages, 564 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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