Energy-based evaluation of liquefaction potential under non-uniform cyclic loading

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• 作者：Ricardo J.N. Azeiteiro^a ; ^{ricardoazeiteiro@uc.pt} ; Paulo A.L.F. Coelho^a ; ^{pac@dec.uc.pt} ; David M.G. Taborda^b ; ^{d.taborda@imperial.ac.uk} ; José ; C.D. Grazina^a ; ^{graza@dec.uc.pt}
• 关键词：Liquefaction potential ; Undrained cyclic triaxial tests ; Non-uniform cyclic loading ; Stress-path dependency ; Energy-based approach
• 刊名：Soil Dynamics and Earthquake Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：92
• 期：Complete
• 页码：650-665
• 全文大小：1562 K
• 卷排序：92

文摘

Undrained cyclic triaxial tests using non-uniform loading were performed. The effect of a singular large-amplitude peak on liquefaction strength is explored. Liquefaction resistance is shown to depend strongly on the loading pattern. The pore pressure build-up is uniquely related to the cumulative dissipated energy. Energy-based methods are a promising tool for evaluating liquefaction resistance.