Insight into the Seismic Liquefaction Performance of Shallow Foundations
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 139, Issue 4
Abstract
The mechanisms that control the seismic liquefaction performance of shallow foundations are identified for the special, still common case of a clay crust separating the foundation from the liquefied ground. For that purpose, foundation response is first analyzed with the nonlinear dynamic finite-difference method and consequently evaluated in connection with published field and experimental evidence. Insight is given into the excess pore-pressure buildup under the foundation, the seismic settlement accumulation, the static-bearing capacity degradation, and the inertia-induced interaction with the superstructure. It is thus shown that a naturally or artificially created nonliquefiable soil crust may effectively mitigate the detrimental effects of liquefaction and allow for a performance-based design of surface foundations, without additional improvement measures.
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Acknowledgments
The presented study was funded by the General Secretariat for Research and Technology (Γ.Γ.E.T.) of Greece, through research project EΠAN-ΔΠ23 (X-SOILS), as well as by the Basic Research Fund Π.E.B.E. of N.T.U.A. (Grant No. 65/1860). Their support is gratefully acknowledged.
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Information & Authors
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 139 • Issue 4 • April 2013
Pages: 599 - 607
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Nov 5, 2011
Accepted: Jun 20, 2012
Published online: Aug 1, 2012
Published in print: Apr 1, 2013
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