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Effect of Superstructure Stiffness on Liquefaction-Induced Failure Mechanisms

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  • S.P.G. Madabhushi

    (University of Cambridge, UK)

  • S.K. Haigh

    (University of Cambridge, UK)

Abstract

Soil liquefaction following strong earthquakes causes extensive damage to civil engineering structures. Foundations of buildings, bridges etc can suffer excessive rotation/settlement due to liquefaction. Many of the recent earthquakes bear testimony for such damage. In this article a hypothesis that “Superstructure stiffness can determine the type of liquefaction-induced failure mechanism suffered by the foundations” is proposed. As a rider to this hypothesis, it will be argued that liquefaction will cause failure of a foundation system in a mode of failure that offers least resistance. Evidence will be offered in terms of field observations during the 921 Ji-Ji earthquake in 1999 in Taiwan and Bhuj earthquake of 2001 in India. Dynamic centrifuge test data and finite element analyses results are presented to illustrate the traditional failure mechanisms.

Suggested Citation

  • S.P.G. Madabhushi & S.K. Haigh, 2010. "Effect of Superstructure Stiffness on Liquefaction-Induced Failure Mechanisms," International Journal of Geotechnical Earthquake Engineering (IJGEE), IGI Global, vol. 1(1), pages 70-87, January.
    • Handle: RePEc:igg:jgee00:v:1:y:2010:i:1:p:70-87
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