Abstract
Increasing usage of piles in harbors on sandy coasts and liquefaction after earthquakes motivate the study of bearing capacity of pile foundation. Due to high costs of test performance on piles, computer simulation of piles displacement under various loads are exercised. Hence, a 2D model of pile-soil has been analyzed by finite difference method in FLAC software and after controlling the validity of software, the liquefaction potential of liquefiable soil layer between two unliquefiable layers due to earthquake loading is checked. Afterwards the pile behavior is analyzed in liquefiable and unliquefiable soil layers and total skin friction and end bearing capacity of the pile are calculated. For calculation of pile bearing capacity, force-settlement behavior of pile is noticeable. Regarding axial force distribution along the pile, we have used axial force reduction mechanism which occurs by soil shear strength action. This action happens in result of pile displacement rather than the soil and force transmission from the pile to the soil.
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