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Effect of soil spatial variability on the response of laterally loaded pile in undrained clay

机译：土壤空间变异性对不排水黏土中侧向荷载桩响应的影响

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摘要

A comprehensive study is performed on the allowable capacity of laterally loaded pile embedded in undrained clay having spatial variation of strength properties. Undrained shear strength is considered as a random variable and the analysis is conducted using random field theory. The soil medium is modeled as two-dimensional non-Gaussian homogeneous random field using Cholesky decomposition technique. Monte Carlo simulation approach is combined with finite difference analysis. Statistics of lateral load capacity and maximum bending moment developed in the pile for a specified allowable lateral displacement as influenced by variance and spatial correlation length of soil's undrained shear strength are investigated. The observations made from this study help to explain the requirement of allowable lateral capacity calculations in probabilistic framework.
机译：对埋入不排水粘土中具有强度特性空间变化的侧向荷载桩的允许承载力进行了综合研究。不排水的抗剪强度被认为是一个随机变量，并使用随机场理论进行分析。使用Cholesky分解技术将土壤介质建模为二维非高斯均质随机场。蒙特卡罗模拟方法与有限差分分析相结合。研究了受不排水抗剪强度方差和空间相关长度影响的，在指定允许横向位移下，桩中产生的侧向承载能力和最大弯矩的统计数据。这项研究得出的观察结果有助于解释概率框架中允许的横向能力计算的要求。

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