Seismic liquefaction analysis of a reservoir dam foundation in the South–North Water Diversion project in China. Part I: Liquefaction potential assessment

Yu Huang (), Hu Zheng and Zhijing Zhuang

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2012, vol. 60, issue 3, 1299-1311

Abstract: In this paper, the dynamic characteristics of a liquefiable silt substratum within the foundation soil of a reservoir dam in the Tianjin area are investigated by means of standard penetration resistance and dynamic triaxial tests. Properties including N-values, factors influencing liquefaction as a cyclic stress, consolidation pressure, structure, and particle composition are considered in this research. Parameters used to evaluate liquefaction potential are obtained through testing. A comprehensive program based on the Chinese code and standard for geological investigation (Ministry of Water Resources of China 1999a ; Ministry of Construction of China 2001a ) and Seed’s simplified method (Seed and Idriss 1971 ; in J Geotech Eng Div ASCE 109(3): 458–482, 1983 ) was carried out to evaluate the potential of liquefaction within the reservoir dam foundation. Liquefaction potentials were also assessed in response to the Chinese codes for seismic design (Hydropower Research Institute of China 2000 ; Ministry of Construction of China 2001b ). The evaluation shows that saturated surface silt in the reservoir dam foundations is vulnerable to liquefaction at seismic intensities of VII and above. The two assessment methods are in good agreement with each other, and the research results can provide useful information for the safe construction and normal operation of the reservoir. Copyright Springer Science+Business Media B.V. 2012

Keywords: Standard penetration test; Dynamic triaxial test; Silt; Seed’s simplified method; Liquefaction potential (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1007/s11069-011-9910-9

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