Application of T-EMSD based p-y curves in the three-dimensional analysis of laterally loaded pile in undrained clay
Application of T-EMSD based p-y curves in the three-dimensional analysis of laterally loaded pile in undrained clay
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DOI：
10.1016/j.oceaneng.2020.107256
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发表时间：
2020-06
影响因子：
5
通讯作者：
Sen Li;Jian Yu;Maosong Huang;C. Leung
中科院分区：
文献类型：
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作者：
Sen Li;Jian Yu;Maosong Huang;C. Leung
为了在横向荷载桩分析中应用曲线法，必须考虑桩的极限承载力、桩兼容系数和初始路基模量等三维效应。提出了一个框架，用于在由总位移载荷扩展可移动强度设计 (T-EMSD) 方法得出的理论曲线中考虑这些因素。承载力设计方程可用于估计基于桩兼容性因子分布的连续速度场。为了验证根据上限解拟合的桩承载力设计方程，进行了刚性平移桩的离心实验。还进行了相应的有限元分析。通过验证的承载力方程和试验结果，得到了桩相容系数剖面。最后，通过实验模拟和参数研究论证了平面应变p-y曲线在三维问题中的应用。
To apply thep-ycurve method in laterally loaded pile analyses, three-dimensional effects in component such as the ultimate pile bearing capacity, pile compatibility factor and initial subgrade modulus must be incorporated. A framework to consider these factors in the theoreticalp-ycurve derived by the Total-displacement-loading Extended Mobilisable Strength Design (T-EMSD) approach is presented. The bearing capacity design equation can be used to estimate the continuous velocity fields based pile compatibility factor profile. To verify the pile bearing capacity design equation fitted from an upper-bound solution, centrifuge experiments of rigidly translated piles were performed. Corresponding finite element analyses were also performed. The pile compatibility factor profile was obtained through the verified bearing capacity equation and experimental results. Finally, the applications of plane-strain p-y curves to three-dimensional problems were demonstrated via experiment simulation and parametric study.