Seismic response of earth dams: some recent developments |
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| Affiliation: | 1. Rensselaer Polytechnic Institute, Troy, New York, USA;2. National Technical University, Athens, Greece;1. Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, USA;2. Department of Civil and Environmental Engineering, University of California, Davis, USA;1. School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China;2. Xinjiang Ertix River Basin Development and Construction Management Bureau, Urumqi 830000, China;3. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China;4. Key Laboratory of Earthquake Engineering Simulation and Seismic Resilience of China Earthquake Administration, Tianjin 300350, China;5. School of Civil Engineering, Tianjin University, Tianjin 300350, China;1. Department of Civil Engineering, University of Chile and Geotechnical and Tailings Area, SRK Consulting, Chile;2. Department of Civil Engineering and Advanced Mining Technology Center (AMTC), University of Chile, Santiago, Chile;3. Departamento de Obras Civiles, Universidad Técnica Federico Santa María, Chile;1. School of Hydraulic Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China;2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The paper focuses on theoretical methods for estimating the dynamic response of earth dams to earthquake ground excitation. Following an outline of the historical developments in this field, the basic concepts/models for response analysis are introduced and their salient features, advantages and limitations are elucidated. The major phenomena associated with, and factors influencing, the response are identified and studied. Particular emphasis is accorded to inhomogeneity due to dependence of soil stiffness on confining pressure, nonrectangular canyon geometry, and nonlinear-inelastic soil behaviour. Several new formulations that have evolved over the last five years are outlined and characteristic results provide considerable insight into the problem. The simplicity of some of these formulations is underlined and attempts are made to compare their predictions with measurements from full-scale, natural and man-made, forced vibration tests. The basic validity as well as the limitations of the proposed analysis methods is demonstrated and topics of needed further research are suggested. |
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