Integrative seismic safety evaluation of a high concrete arch dam |
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| Institution: | 1. Department of Civil, Environmental and Architectural Engineering, University of Colorado, ECCE 168, UBC 80309-0428, Boulder, CO, USA;2. Department of Civil Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3;1. Center for Transportation Infrastructure Systems, University of Texas at El Paso, El Paso, TX, 79968, USA;2. Faculty of Civil Engineering, University of Tabriz, Tabriz, 5166616471, Iran;3. School of Geology, University College of Science, University of Tehran, Tehran, 14155-6619, Iran;1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;2. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;3. China Renewable Energy Engineering Institute, Beijing 100120, China;1. K. N. Toosi University of Technology, Tehran, Iran;2. University of Colorado, Boulder, ECCE 168, UBC 80309-0428, Boulder, CO, USA;1. Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China;2. Chengdu Engineering Corporation Limited, Power China, Chengdu 610072, China;1. Postdoctoral Research Associate, Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee Knoxville/Space Institute, TN, USA;2. Professor, Department of Civil and Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran |
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| Abstract: | An integrative seismic safety evaluation of an arch dam should include all sources of nonlinearities, dynamic interactions between different components and the external loads. The present paper investigates the calibration procedure and nonlinear seismic response of an existing high arch dam. The first part explains the conducted analyses for the static and thermal calibrations of the dam based on site measurements. The second part investigates the nonlinear seismic analysis of the calibrated model considering the effect of joints, cracking of mass concrete, reservoir–dam–rock interaction, hydrodynamic pressure inside the opened joints and the geometric nonlinearity. Penetration of the water inside the opened joints accelerates the damage process. The integrative seismic assessment of a case study shows that the dam will fail under the maximum credible earthquake scenario. The dam is judged to be severely damaged with extensive cracking and the joints undergo opening/sliding. A systematic procedure is proposed for seismic and post-seismic safety of dams. |
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| Keywords: | Nonlinear model Hydrodynamic pressure Seismic safety Thermal calibration Dam–foundation interaction Post-earthquake analysis |
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