复合地基各向异性地震反应的数值模拟

祝彦知; 王俊林

doi:10.13204/j.gyjz200506013

复合地基各向异性地震反应的数值模拟

doi: 10.13204/j.gyjz200506013

祝彦知¹,
王俊林²

1.
1. 同济大学地下建筑与工程系上海 200092;
2.
2. 郑州大学水利与环境学院郑州 450003

基金项目:

上海市重点学科（结构工程）建设项目资助

详细信息

作者简介:
祝彦知，男，1966年6月出生，博士后，副教授

中图分类号: TU435
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- 文章访问数: 67
- HTML全文浏览量: 10
- PDF下载量: 33
- 被引次数: 0
出版历程
- 收稿日期: 2005-01-09
- 刊出日期: 2005-06-20

NUMERICAL SIMULATION OF ELASTOPLASTIC SEISMIC RESPONSE FOR COMPOSITE FOUNDATION TAKING ACCOUNT OF ANISOTROPY

Zhu Yanzhi¹,
Wang Junlin²

1.
1. Department of Geotechnical Engineering,Tongji University Shanghai 200092;
2.
2. College of Environmental &Hydraulic Engineering,Zhengzhou Universi ty Zhengzhou 450003

摘要

摘要: 通过将工程上常用的柔性桩复合地基加固区和非加固区土体模拟成各向异性体，在复合地基地震反应分析中，引入了横观各向同性弹塑性模型，建立了针对横观各向同性介质的双渐近多向透射边界条件。并针对柔性桩复合地基地震反应分析的特点，编制了考虑各向异性的柔性桩复合地基地震反应分析有限元计算程序。在程序中针对不同的材料采用不同的本构关系和不同的单元形式，并采用了关联流动法则和多种屈服准则，可以同时进行复合地基的二维平面应力、平面应变和轴对称问题的静动力数值模拟。程序验证和实例计算分析表明，在柔性桩复合地基地震反应分析中考虑各向异性是必要的。
- 复合地基 /
- 横观各向同性 /
- 多向透射边界 /
- 地震反应 /
- 有限元
Abstract: Anisotropic elastic- plastic model of layered soil and composite foundation with flexible columns is established tosolve seismic response analysis of composite foundation in layered soil. The doubly asymptotic mult-i directional transmittingboundary for transversely isotropic medium is formed. Based on anisotropic elastic- plastic model of composite foundation andlayered soil, the dynamic FEM program of layered, transversely isotropic medium is developed according to the characteristicof earthquake response analysis for composite foundation. The seismic response analysis of the composite foundation inShanghai is carried out using the developed FEM program. From analysis results, it is shown that the dynamic FEM model oflayered, transversely isotropic composite foundation is feasible and applicable. And the results show that it is necessary totake account of anisotropy of composite foundation in the seismic analysis of composite foundation.
- composite foundation /
- transversely isotropic /
- mult-i directional transmitting boundary /
- seismic response /
- finite element method

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参考文献(9)

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