Seismic analysis of laterally loaded pile under influence of vertical loading using finite element method |
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| Institution: | 1. Department of Civil Engineering, IIT Bombay, Powai, Mumbai 400 076, India;2. Coffey Geotechnics Pty. Ltd., Sydney, Australia;1. School of Civil Engineering/State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China;2. Atmospheric, Earth, and Energy Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA;1. Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India;2. Department of Civil and Environmental Engineering, Brigham Young University, Provo, UT 84604, USA;3. Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India;4. Department of Engineering, Durham University, DH13LE, UK;5. Academy of Scientific and Innovative Research (AcSIR), CSIR Campus, India;1. Beca Consultants, Wellington, New Zealand;2. Department of Civil and Environmental Engineering, University of Auckland, Auckland, New Zealand;1. Department of Civil Engineering, Faculty of Engineering, Sherbrooke University, Sherbrooke, QC, Canada;2. Department of Civil Engineering, Faculty of Engineering, Assiut University, Assiut, Egypt |
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| Abstract: | An efficient analytical approach using the finite element (FE) method, is proposed to calculate the bending moment and deflection response of a single pile under the combined influence of lateral and axial compressive loading during an earthquake, in both saturated and dry homogenous soil, and in a typical layered soil. Applying a pseudo-static method, seismic loads are calculated using the maximum horizontal acceleration (MHA) obtained from a seismic ground response analysis and a lateral load coefficient (a) for both liquefying and non-liquefying soils. It is observed that for a pile having l/d ratio 40 and embedded in dry dense sand, the normalized moment and displacement increase when the input motion becomes more severe, as expected. Further increasing of a from 0.1 to 0.3 leads to increase in the normalized moment and displacement from 0.033 to 0.042, and 0.009 to 0.035, respectively. The validity of the proposed FE based solution for estimating seismic response of pile is also assessed through dynamic centrifuge test results. |
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| Keywords: | Finite element method Maximum horizontal acceleration Pseudo-static Pile Earthquake motions Ground response analysis Liquefaction |
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