Information - NH4.05 Evaluation of liquefaction potential
Liquefaction is a secondary effect that is related to earthquake shaking. It has been systematically studied by scientists after the two earthquakes of Alaska and Niigata in 1964. A potentially susceptible to liquefaction soil must be loose, newly deposited with a groundwater table near to the ground surface. The increase of pore water pressure, due to the ground shaking, may turn the soil into a liquefied condition. At that moment, the effective stress is zero and the soil behaves as a liquid. After the soil has been liquefied, the excess pore water pressure starts to dissipate. Liquefaction induced structural damages such as building foundation failures, slope failures and floatation of buried structures that can be accompanied by the development of sand boils or other ground surface disruptions. Such structural damages were reported in the towns of Adapazari and Wufeng triggered by the Kocaelli and Chi-Chi earthquakes respectively, in 1999. The purpose of this session is to provide to the researchers the opportunity to present their work concerning the evaluation of the liquefaction potential and the mitigation of the liquefaction seismic hazard. Case studies from recent earthquakes and empirical relationships from the study of liquefaction case histories are expected. Furthermore, new methods for liquefaction remediation can be presented.
Preliminary List of Solicited Speakers
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