| 非均质各向异性软基上管桩基础承载力分析 |
| |
| 引用本文： | 范庆来,张可誉,张令诺.非均质各向异性软基上管桩基础承载力分析[J].岩土力学,2008,29(Z1):621-624. |
| |
| 作者姓名： | 范庆来 张可誉 张令诺 |
| |
| 作者单位： | 1. 重庆交通大学,桥梁结构工程交通行业重点实验室,重庆,400074;鲁东大学,土木工程学院,山东,烟台,264025
2. 鲁东大学,土木工程学院,山东,烟台,264025 |
| |
| 基金项目： | 鲁东大学校科研和教改项目，重庆交通大学桥梁结构工程交通行业重点实验室开放基金 |
| |
| 摘 要： | 对于非均质各向异性软土地基上管桩基础的承载力,基于塑性极限分析理论考虑软土强度的非均质与各向异性效应,提出了一种改进的三维极限分析上限解法.利用有限元分析软件ABAQUS,采用Hill理想弹塑性模型,对软基上管桩水平承载力进行了数值模拟,由此所得到的破坏模式与极限分析方法中的假设失稳机制基本一致.通过变动参数对比分析,探讨了软黏土不排水抗剪强度的各向异性和非均质性对于管桩基础承载力的影响.
|
| 关 键 词： | 管桩基础 软土地基 非均质性 各向异性 极限分析上限解法 有限元 |
| 收稿时间： | 2008-03-25 |
Analyses of bearing capacity of pipe pile foundation in inhomogeneous and anisotropic soft ground |
| |
| FAN Qing-lai,ZHANG Ke-yu,ZHANG Ling-nuo.Analyses of bearing capacity of pipe pile foundation in inhomogeneous and anisotropic soft ground[J].Rock and Soil Mechanics,2008,29(Z1):621-624. |
| |
| Authors: | FAN Qing-lai ZHANG Ke-yu ZHANG Ling-nuo |
| |
| Institution: | 1. Key Laboratory of Bridge-Structure Engineering of Ministry of Communications, Chongqing Jiaotong University, Chongqing 400074, China; 2. School of Civil Engineering, Ludong University, Yantai 264025, China |
| |
| Abstract: | A modified three-dimensional plastic limit analysis method is proposed for lateral bearing capacity of the large-diameter pipe pile in the inhomogeneous and anisotropic soft ground. The bearing capacity is also numerically analyzed utilizing the FEM software ABAQUS, in which the soil is assumed to obey the Hill’s yield criterion. Both the failure mechanism assumed and the plastic limit analysis predictions are validated by numerical computations based on FEM. Through a parametric study, it is shown that the effect of soil strength anisotropy on the bearing capacity of the structure in inhomogeneous soil is smaller than that in homogeneous soft ground. |
| |
| Keywords: | pipe pile soft ground inhomogeneity anisotropy upper-bound limit analysis finite elements |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
