Load-displacement and upper-bound solutions of a loaded laterally pile in clay based on a total-displacement-loading EMSD method

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• 作者：Jian Yu^a ; ^b ; Maosong Huang^a ; ^{mshuang@tongji.edu.cn} ; Sen Li^a ; C.F. Leung^b
• 关键词：Upper bound ; Laterally loaded piles ; Mobilisable strength design ; P-y curve
• 刊名：Computers and Geotechnics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：83
• 期：Complete
• 页码：64-76
• 全文大小：2690 K
• 卷排序：83

文摘

A total-displacement-loading approach based on the extended mobilisable strength design (EMSD) method is developed for predicting nonlinear foundation responses and upper-bound capacities with continuous velocity fields. Different from EMSD, the new approach turns optimizing a minimum energy solution into solving an elastic problem with strain-dependent equivalent elastic modulus. The strain-dependent modulus is determined by a nonlinear iterative method. This transform guarantees that the reaction force is consistent with the elastic solution in early stages of loading and gradually approaches an upper-bound solution at a large value of displacement. The approach is demonstrated on a problem of the laterally loaded pile.