Bounding surface plasticity model for loose beach sand under cyclic loading

Application of the previous semi-empirical bounding surface plasticity model [Aboim et. al. (1982) and Bardet (1983, 1985)] to simulate the nonlinear behavior of loose beach Li-Kang sand subjected to cyclic loading has been investigated. The bounding surface plasticity model describes strain-softening and stress-dilatancy with nine material constant calculated for the results of conventional static triaxial tests. The experimental program were performed on local loose beach Li-Kang sand with the initial relative density about 30 %. A series of static triaxial tests and cyclic undrained triaxial tests were performed on test specimens under the effective cell pressure of 50, 100 and 150 kPa as well as the OCR of 1.0, 1.25 and 1.50 to evaluate the liquefaction potential on loose saturated sand deposit subjected to earthquake.