Liquefaction-Induced Downdrag on Drilled Shafts
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This study developed an analytical method that can account for the liquefaction-caused settlement of deep foundations, in particular a structure’s drilled shafts. During and following liquefaction caused by an earthquake, sandy soil layers shrink in volume and settle. Depending on the site conditions, the changes in forces that result from liquefaction-induced soil settlement and downdrag can significantly affect the performance of drilled shafts, even damaging the structure. The new analytical method, based on the neutral plane method, proved successful in application to a case study of downdrag observed during the February 2010 8.8-magnitude earthquake in Maule, Chile. ... Read More | |
