Multi-Hazard Analysis of Drilled Shaft in Liquefiable Sand Using Finite Element Method
Publication: IFCEE 2021
ABSTRACT
In this study, a series of finite element analyses were carried out to study the effect of multiple hazards on a single drilled shaft in unsaturated sandy soil. The geotechnical design of the drilled shaft was carried out for proportionate axial load induced by a three-story building and lateral load induced by the 1940 El-Centro earthquake on a single shaft by using analytical methods and LPILE software. Then, finite element code, PLAXIS 2D with UBC-3D PLM constitutive model, was used to develop a plane strain model and analyzed by applying hydrological load from the 1979 Tropical Storm Claudette for various durations and earthquake at the end of each duration. The effect of hydrological load on the displacement of the drilled shaft was studied. Also, local liquefaction was observed near the drilled shaft at the ground surface, which caused heaving of the sand and vertical displacement of the drilled shaft.
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IFCEE 2021
Pages: 528 - 537
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© 2021 American Society of Civil Engineers.
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Published online: May 6, 2021
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