A modulus‐multiplier approach for non‐linear analysis of laterally loaded pile groups |
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| Authors: | Chia‐Cheng Fan James H Long |
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| Institution: | 1. Department of Construction Engineering, National Kaohsiung First University of Science and Technology, 2 Juoyue Rd., Nantzu District, Kaohsiung City, Taiwan;2. Assistant Professor.Department of Construction Engineering, National Kaohsiung First University of Science and Technology, 2 Juoyue Rd., Nantzu District, Kaohsiung City, Taiwan;3. Department of Civil and Environmental Engineering, The University of Illinois at Urbana‐Champaign, Newmark Civil Engineering Lab., 205 North Mathews Ave., Urbana, IL 61801, U.S.A.;4. Associate Professor. |
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| Abstract: | A modulus‐multiplier approach, which applies a reduction factor to the modulus of single pile p–y curves to account for the group effect, is presented for analysing the response of each individual pile in a laterally loaded pile group with any geometric arrangement based on non‐linear pile–soil–pile interaction. The pile–soil–pile interaction is conducted using a 3D non‐linear finite element approach. The interaction effect between piles under various loading directions is investigated in this paper. Group effects can be neglected at a pile spacing of 9 times the pile diameter for piles along the direction of the lateral load and at a pile spacing of 6 times the pile diameter for piles normal to the direction of loading. The modulus multipliers for a pair of piles are developed as a function of pile spacing for departure angle of 0, 90, and 180sup>/sup> with respect to the loading direction. The procedure proposed for computing the response of any individual pile within a pile group is verified using two well‐documented full‐scale pile load tests. Copyright © 2006 John Wiley & Sons, Ltd. |
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| Keywords: | laterally loaded pile group group effect modulus multiplier pile‐to‐pile interaction finite element analysis group pile p– y curve |
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