How the response spectrum of non-liquefied loose-to-medium sand deposits is affected by the groundwater level |
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| Institution: | 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education and Department of Geotechnical Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China;2. Department of Civil Engineering, University of Akron, Akron, OH 44325, USA;1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, PR China;2. MOE Key Lab of Soft Soils and Geo-environmental Engineering, Zhejiang University, Hangzhou 310058, PR China;1. Department of Internal Medicine, Cleveland Clinic, Cleveland, OH, USA;2. Respiratory Institute Biostatistics Core, Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH, USA;3. Department of Pulmonary, Allergy and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH, USA;4. Department of Chest Diseases, Faculty of Medicine, Assiut University, Assiut, Egypt;5. Department of Pulmonary Medicine, Billings Clinic, Billings, MT, USA;1. Department of Information Engineering and Computer Science, Feng Chia University, Taichung 407, Taiwan, ROC;2. Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan 701, Taiwan, ROC |
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| Abstract: | This study examines the water level influence on the seismic response of sand deposits. The seismic ground response of a sand deposit for two cases was computed: groundwater level near the surface and at great depth. The ratio of soil factors computed for both cases evaluates the influence of having the water table near the surface. This parameter is small when the full range of periods is considered, but rises to ∼1.15 when narrowing the range of periods to 0.2–0.6 s, corresponding to the plateau of Eurocode 8 ground type C response spectrum. So, the water level effect is of the same magnitude of the existing soil factor in seismic codes. |
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| Keywords: | Seismic site effects Ground water level Elastoplastic soil behaviour |
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