Effect of stress disturbance induced by construction on the seismic response of shallow bored tunnels |
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| Institution: | 1. Université de Liége (ULg), Département ArGEnCo, Allée de la Découverte, 9, 4000 Liége, Belgium;2. European Underground Research Infrastructure for Disposal of Nuclear Waste in Clay Environment (EIG EURIDICE), 2400 Mol, Belgium;1. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore;2. Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095, USA;1. Aristotle University of Thessaloniki, Department of Civil Engineering, Research Unit of Soil Dynamics and Geotechnical Earthquake Engineering, Thessaloniki, Greece;2. Institute of Engineering Seismology and Earthquake Engineering, EPPO-ITSAK, Thessaloniki, Greece;3. IFSTTAR French Institute of Science and Technology for Transport, Development and Networks, Nantes, France;1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | This paper examines the effect of the stress disturbance induced by tunnel construction on the completed tunnel’s seismic response. The convergence-confinement method is used to simulate the tunnel construction prior to the dynamic analysis. The analysis is performed using the finite element method and drained soil behaviour is simulated with an advanced multi-mechanism elastoplastic model, utilising parameters derived from laboratory testing of Toyoura sand. The response of the soil and of the lining during dynamic loading is studied. It is shown that stress disturbance due to tunnel construction may significantly increase lining forces induced by earthquake loading, and Wang’s elastic solution appears to underestimate the increase. |
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