Analysis of Site Liquefaction Using Earthquake Records

摘要: The surface and downhole accelerations, pore-water pressures recorded during the 1987 earthquakes at a site in Imperial Wildlife Management Area (Imperial County, Calif.) are used to obtain direct estimates of average seismic shear stress-strain effective stress-path histories. These histories provide valuable insight into behavior liquefaction associated loss soil stiffness. As pore pressure increases due excitation, stiffness is found gradually decrease. During high-pore-pressure phase, characterized by cycles large strain very small stress. At these strains, evidence hardening response, possibly dilative-type behavior, observed. results this study demonstrate that acceleration arrays represent source information on response excitation.