| 群桩与土和承台结构非线性相互作用机理的数值分析 |
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| 引用本文： | 陈亚东,宰金珉,戚科骏.群桩与土和承台结构非线性相互作用机理的数值分析[J].建筑科学,2007,23(7):24-27. |
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| 作者姓名： | 陈亚东 宰金珉 戚科骏 |
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| 作者单位： | 南京工业大学,土木工程学院,南京,210009;南京工业大学,土木工程学院,南京,210009;南京工业大学,土木工程学院,南京,210009 |
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| 摘 要： | 利用ABAQUS对常规桩筏基础(3D桩距)和复合桩基(6D桩距)进行了三维弹塑性分析。利用无厚度接触面单元模拟筏板—桩—土的非线性接触特性,采用Mohr-Coulomb弹塑性本构模型描述土的非线性特性,桩取为弹性。得到了沉降,桩土荷载分担比、桩周土体水平位移变化情况,并对二者进行了对比分析。分析结果基本反映了桩—土—筏的实际工作性状,验证了复合桩基理论的正确性。
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| 关 键 词： | 桩筏基础 非线性 数值分析 沉降 |
| 文章编号： | 1002-8528（2007）07-0024-04 |
| 收稿时间： | 2006-12-20 |
| 修稿时间： | 2006-12-20 |
Numerical Analysis of Nonlinear Interaction Mechanism to Pile-Raft-Soil |
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| CHEN Ya-dong,ZAI Jin-min,QI Ke-jun.Numerical Analysis of Nonlinear Interaction Mechanism to Pile-Raft-Soil[J].Building Science,2007,23(7):24-27. |
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| Authors: | CHEN Ya-dong ZAI Jin-min QI Ke-jun |
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| Affiliation: | College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | ABAQUS is used to give a 3D elastoplastic finite element analysis to piled raft foundation of 3D and 6D pile spacing.No thickness contact element is employed to simulate the nonlinear behavior of interaction of pile-soil.Mohr-coulomb elastoplastic constitutive model is used to represent nonlinear behavior of soil,and the pile is assumed to be elastic.Settlement,load sharing percent and horizontal displacement of the soil around the pile are obtained from the analysis,also contrast is given.The analysis results reflect the practical work properties of pile-soil interaction,and validate the theoretical correctness of composite pile foundation. |
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| Keywords: | piled raft foundation nonlinear behavior numerical analyses settlement |
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