Effects of excess pore pressure dissipation on liquefaction-induced ground deformation in 1-g shaking table test

B. Wang* , K. Zen , G.Q. Chen , K. Kasama

Abstract

Focusing on the effect of excess pore pressure dissipation on liquefaction-induced ground deformation, a series of 1-g shaking table tests were conducted in a rigid soil container by use of saturated Toyoura sand, the relative density of which was 20-60%. These tests were subjected to the sinusoidal base shaking with step increased accelerations: 100, 200, 300 and 400 Gals for 2-4 seconds. Shaking table tests were done using either water or polymer fluid with more viscous than water, thus varying the sand permeability of model tests. Excess pore pressures, accelerations, settlements and lateral deformations were measured in each test. Test results are presented in this paper and the effect of sand permeability on liquefaction and liquefaction-induced ground deformation was discussed in detail.

Key Words

liquefaction; lateral flow; settlement; sand permeability; shaking table test.

Address

B. Wang — Graduate Student, Geo-disaster Prevention Laboratory, Department of Civil and Structural Engineering, Kyushu University, Fukuoka 819-0395, Japan
K. Zen, G.Q. Chen and K. Kasama — Department of Civil and Structural Engineering, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan

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