Insight into the Seismic Liquefaction Performance of Shallow Foundations

AbstractThe 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 fi...

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Bibliographic Details
Published in:Journal of geotechnical and geoenvironmental engineering 2013-04, Vol.139 (4), p.599-607
Main Authors: Karamitros, Dimitrios K, Bouckovalas, George D, Chaloulos, Yannis K
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Crusts
Earthwork. Foundations. Retaining walls
Exact sciences and technology
Foundations
Geoenvironmental engineering
Geotechnics
Liquefaction
Nonlinear dynamics
Seismic engineering
Seismic response
Structure-soil interaction
Technical Papers
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Summary:AbstractThe 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.
ISSN:1090-0241
1943-5606
DOI:10.1061/(ASCE)GT.1943-5606.0000797