Prediction method of seismic residual deformation of caisson quay wall in liquefied foundation |
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| Authors: | Li-yan Wang Han-long Liu Peng-ming Jiang Xiang-xiang Chen |
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| Institution: | (1) Madrid University of Technology, E.U.I.T.O.P, Madrid, Spain;(2) Madrid University of Technology, E.T.S.I.C.C.P, Madrid, Spain |
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| Abstract: | The multi-spring shear mechanism plastic model in this paper is defined in strain space to simulate pore pressure generation
and development in sands under cyclic loading and undrained conditions, and the rotation of principal stresses can also be
simulated by the model with cyclic behavior of anisotropic consolidated sands. Seismic residual deformations of typical caisson
quay walls under different engineering situations are analyzed in detail by the plastic model, and then an index of liquefaction
extent is applied to describe the regularity of seismic residual deformation of caisson quay wall top under different engineering
situations. Some correlated prediction formulas are derived from the results of regression analysis between seismic residual
deformation of quay wall top and extent of liquefaction in the relative safety backfill sand site. Finally, the rationality
and the reliability of the prediction methods are validated by test results of a 120 g-centrifuge shaking table, and the comparisons
show that some reliable seismic residual deformation of caisson quay can be predicted by appropriate prediction formulas and
appropriate index of liquefaction extent. |
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| Keywords: | caisson quay liquefied foundation seismic residual deformation extent of liquefaction regression analysis prediction formulas |
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