POSTEARTHQUAKE DEFORMATION ANALYSIS OF WILDLIFE SITE

Postearthquake deformations of the Wildlife site, Imperial Valley, Cal if., following the 1987 Superstition Hills earthquake, have been inter preted by finite-element deformation analyses. The analyses consider t he stress redistribution and reconsolidation caused by the development of liquefaction. The stress redistribution analysis was conducted und er fully undrained condition to consider the effects of strain-softeni ng behavior of liquefied materials. The reconsolidation analysis was c onducted using Biot's theory to consider the effects of dissipation of excess pore-water pressures. The results reveal that the delayed pore -water pressure response and deformation may be due to the redistribut ion of stresses and porewater pressures.