PROBABILISTIC PORE PRESSURE-INDUCED STRUCTURAL DAMAGE.

The generation and dissipation of pore water pressure in a saturated sand deposit during and following an earthquake dictates the type and extent of damage a site will experience. Most of the presently used methods are for a level ground surface. However, in practical problems, the soil elements along potential failure plane surfaces are subjected to an appreciable amount of static shear stresses. Thus, the behavior of such soil elements subjected to an earthquake is considerably different. The structural damage due to earthquake-induced liquefaction can be estimated in two parts: during and following an earthquake. In the first part, it is necessary to estimate the residual settlement during an earthquake due to the generation of pore water pressure. In the second part, it is necessary to evaluate the consolidation settlement following an earthquake due to the dissipation of pore water pressure.