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Analysis of vertically loaded piles in multilayered transversely isotropic soils by BEM

机译：多层横观各向同性土中竖向荷载桩的BEM分析

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摘要

This paper presents a boundary element method (BEM) for the static analysis of vertically loaded single piles embedded in multilayered transversely isotropic soils by using an analytical layer-element solution. The solution which is especially suitable for numerical calculation is deduced through the combination of the order reduction approach and the technology of integral transform. A boundary element formula for axially loaded piles with both enlarged tip and head cap is established by taking the solution as the kernel function, and the compressibility of piles is further considered based on a direct algorithm which can avoid the occurrence of non-convergence results from the conventional iterative scheme while the stiffness of piles approaches to that of the soil foundation. Numerical examples including piles in a finite depth soil and multilayered soils of transverse isotropy are carried out to study the influence of soil properties on single pile behaviors.
机译：本文提出了一种边界元法（BEM），该方法通过分析层-单元法对多层横向各向同性土中埋置的竖向荷载单桩进行静力分析。通过降阶方法和积分变换技术相结合，得出了特别适合数值计算的解决方案。以该解为核函数，建立了端部和端盖均增大的轴向受力桩的边界元公式，并基于直接算法进一步考虑了桩的可压缩性，避免了因非收敛性而产生的结果。传统的迭代方案，而桩的刚度接近土壤基础的刚度。以有限深度土体中的桩和横向各向同性的多层土为例，通过数值算例研究了土性对单桩性状的影响。

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