Multi-directional cyclic p-y curves for soft clays
Por:
Mayoral, Juan M., Pestana, Juan M., Seed, Raymond B.
Publicada:
15 mar 2016
Resumen:
Currently there is a lack of information and experimental data to
formulate p-y curves in multidirectional loading conditions for soft
clays. Experimental evidence has shown that uni-directional p-y curves
are not able to represent correctly the near field soil response to
multi-directional earthquake loading. This paper presents the results of
an experimental study aimed at characterizing soil-pile interface
response for multi-directional pile trajectories in soft clay. Series of
multidirectional p-y test were performed including circular, elliptical,
parabolic, and figure-8 pile transit paths. These tests provide
information regarding the force-displacement relationship dependence on
the loading path, the evolution of the soil stiffness during
multi-directional cyclic loading, the effect of loading history on the
near field soil stiffness, and the variation of the lateral load with
pile depth. The tests results showed that the multi-directional movement
of the pile produces loading induced anisotropy, which can significantly
affect the behavior of the near field soil. From the results gathered it
is clear that the soil-pile interaction in soft clay during
multi-directional loading, is complex and cannot be modeled with methods
based on the traditional concept of p-y curves simply applied in two
orthogonal directions. (C) 2016 Elsevier Ltd. All rights reserved.
Filiaciones:
Mayoral, Juan M.:
Univ Nacl Autonoma Mexico, Inst Engn, Geotech Dept, Bldg 4,POB 04510, Mexico City, DF, Mexico
Pestana, Juan M.:
Univ Calif Berkeley, 440 Davis Hall, Berkeley, CA 94720 USA
Seed, Raymond B.:
Univ Calif Berkeley, 440 Davis Hall, Berkeley, CA 94720 USA
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