Paper Title:

3D Numerical Analysis of Seismic Performances of Dyke on Liquefiable Soils

Periodical Advanced Materials Research (Volumes 243 - 249)
Main Theme Advances in Civil Engineering and Architecture
Edited by Chaohe Chen, Yong Huang and Guangfan Li
Pages 3824-3831
DOI 10.4028/www.scientific.net/AMR.243-249.3824
Citation Ming Wu Wang et al., 2011, Advanced Materials Research, 243-249, 3824
Online since May 2011
Authors Ming Wu Wang, Guang Yi Chen
Keywords Dyke, Effective Stress Analysis, Liquefaction, Multiple Shear Mechanism Model, Seismic Design, Seismic Response
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Many field investigations of earthquake disaster cases confirm that earthquake-induced liquefaction is a main factor resulting in large damages to dyke. Consequently to ensure seismic safety of dyke on the liquefiable foundation, the research on seismic performances of dyke is of great importance. Herein seismic responses of dyke on the liquefiable soils were discussed by means of three dimension effective stress analysis method using a multiple shear mechanism model and liquefaction front. Two numerical models, in which the liquefiable foundation both consisted of saturated fine silica sand of 30% relative density and scenario waves with peak amplitude of 0.8056 and 3.133 m/s2 were used input waves, were conducted to investigate the distribution principles and the changing rules of deformation, acceleration, express pore water pressure, and shear dilatancy behavior in the dyke and the liquefiable foundation. The computed results do good agreements with the measured results from centrifuge tests. And these results may be of theoretical and realistic significance for seismic design of dyke on liquefiable soils.