Nonlinear analyses of laterally loaded piles - A semi-analytical approach
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- 作者：Fei Han ; hanfei@purdue.edu" class="auth_mail" title="E-mail the corresponding author ; Rodrigo Salgado rodrigo@ecn.purdue.edu" class="auth_mail" title="E-mail the corresponding author ; Monica Prezzi mprezzi@ecn.purdue.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Laterally loaded piles ; Nonlinear analyses ; Elasto-plastic model
- 刊名：Computers and Geotechnics
- 出版年：2015
- 出版时间：October 2015
- 年：2015
- 卷：70
- 期：Complete
- 页码：116-129
- 全文大小：2155 K
文摘
This paper describes a semi-analytical, continuum mechanics-based method of calculating the non-linear response of pile foundations subjected to lateral loads. The displacement field in the soil is obtained as the product of a pile deflection function and displacement decay functions. Based on the incremental form of the virtual work, a system of coupled differential equations for the pile deflection and decay functions is derived and then solved by using the finite difference method, producing pile deflections, shear forces and bending moments, as well as displacements within the soil domain. The soil is modeled as an elasto-plastic material. The analysis is computationally efficient and produces results that are in good agreement with those from 3D finite element modeling with the same constitutive model for the soil. The method models laterally loaded pile response more realistically than the traditional e3bb7e45" title="Click to view the MathML source">p–y method at a comparable computational cost. The method is substantially more efficient than 3D finite element simulations. The proposed method offers a good alternative to the e3bb7e45" title="Click to view the MathML source">p–y method in contexts in which fast calculation of lateral pile response is required, such as in the design of piles for offshore wind farms.