Interaction between group piles and dumbbell shaped cap in a super large bridge was analyzed with ansys software of 3 - d elasto - plastic finite element method 摘要用ansys对某特大桥索塔哑铃型承台群桩基础与土体共同作用进行了三维弹塑性有限元分析。
5 . dynamic impedances of pile groups have been studied almost in a same assumption that rigid caps and soil under it do not touch each other in the present papers 5 .本论文在对群桩刚性承台动阻抗的求解过程中，首次考虑了承台底土与承台及群桩的动力相互作用。
Compared with the results of model experiment , the present method could not only save a large amount of computing time but also give reasonable results 通过与模型试验结果进行比较，该方法不但可以节省单桩和群桩变形分析时间，而且计算结果与实测结果也比较相近。
This paper describes a pile groups - soil - pile cap interaction model in the lateral loading and proposes a finite layer - finite element analysis for the single pile and groups pile 本文研究了水平荷载下桩?土?承台共同作用的问题，对单桩和群桩分别进行了有限层?有限元分析。
Bearing capacity and settlement of super large pile - cap and pile foundation were thoroughly analyzed with numerical analytical results validated by centrifugal model test 在用离心模型试验成果验证数值分析的正确性下，用其数值分析成果进一步深入分析群桩基础的承载变形特性。
Thirdly , the bearing and deformation characteristics of single and group piles are investigated by means of axisymmetric finite element analysis ( fea ) and three - dimensional fea 再次，运用二维轴对称有限元法以及三维有限元法，系统分析了挤扩支盘桩单桩和群桩的承载变形性状。
Based on the conventional variational approach , a simple approach was presented so that the deformation of tension pile groups could be solved by calculating a 2 2 array 在传统变分方法的基础上，本文将抗拔群桩的变形分析简化为计算一个2 2维矩阵，使得群桩变形分析时间大大缩短。
The thesis account for the dynamic impedance of pile groups without the aboved - mentioned assumption . so , that the soil under caps affects the caps and piles is discussed 目前对群桩动阻抗研究的文献，始终局限在刚性承台底与土脱离的假设，而没有考虑实际存在的承台底与土接触的情况。
The investigation in this paper has an important academic significance on the insight into the dynamic pile foundation with embedded cap as well as applied value in the engineering practice 本文的研究对于深刻认识埋置承台群桩基础的动力特性有重要的理论意义，对工程实际有重要的应用价值。
Based on the current studies on large pile groups , an analytical method considering slip of piles and soil and dynamic adjustment of integral whole stiffness of pile groups was put forward 摘要在分析了大型群桩研究现状的基础上，提出了考虑桩土滑移和群桩桩顶整体刚度动态调整的分析计算方法。
