RESPONSE OF PORO-ELASTOPLASTIC BEDS TO STANDING WAVES

Abstract

A closed-form solution related to the wave-induced pore pressure changes in cohesionless deposits, was derived in the research discussed in this paper. The poro-elastoplastic solution allows for the cumulative contraction of soils under cyclic loading in a simple yet workable way, permitting an integrated assessment of liquefaction due to oscillatory excess pore pressure as well as residual pore pressure. The theoretical performance compares well with the pore pressure response of a fine-grained sand bed that was observed in a centrifugal standing-wave test with viscous scaling introduced. In addition, a chart indicating the susceptibility of a wide range of cohesionless soils to liquefaction from standing waves is presented by making use of the closed-form solution, with emphasis on the effect of partial drainage.