A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluating Pile Pinning Effects on Abutments Over Liquefied Ground
Earthquake-induced deformations of a bridge abutment underlain by liquefied soil may be reduced by the restraining forces that come from the pile foundation and bridge superstructure. The reduced abutment displacements may, in turn, reduce the loads or displacement demands that are imposed on the piles. Design methods that account for this "pile pinning" effect have been used in practice and included in the recent NCHRP 472 guidelines, but have not previously been evaluated against physical data. An initial evaluation of these pile pinning analysis methods is presented via comparison against the results of a recent dynamic centrifuge model test. Four aspects of these analysis methods are identified as requiring modification or adjustments to avoid an unconservative estimate of pile foundation performance. These and other design issues are discussed.
Evaluating Pile Pinning Effects on Abutments Over Liquefied Ground
Earthquake-induced deformations of a bridge abutment underlain by liquefied soil may be reduced by the restraining forces that come from the pile foundation and bridge superstructure. The reduced abutment displacements may, in turn, reduce the loads or displacement demands that are imposed on the piles. Design methods that account for this "pile pinning" effect have been used in practice and included in the recent NCHRP 472 guidelines, but have not previously been evaluated against physical data. An initial evaluation of these pile pinning analysis methods is presented via comparison against the results of a recent dynamic centrifuge model test. Four aspects of these analysis methods are identified as requiring modification or adjustments to avoid an unconservative estimate of pile foundation performance. These and other design issues are discussed.
Evaluating Pile Pinning Effects on Abutments Over Liquefied Ground
Boulanger, Ross W. (author) / Chang, Dongdong (author) / Gulerce, Umit (author) / Brandenberg, Scott J. (author) / Kutter, Bruce L. (author)
Workshop on Seismic Performance and Simulation of Pile Foundations in Liquefied and Laterally Spreading Ground ; 2005 ; University of California, Davis, California, United States
2005-10-31
Conference paper
Electronic Resource
English
Evaluating Pile Pinning Effects on Abutments over Liquefied Ground
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