考虑损伤的软土路基变形分析

薛新华; 张我华

doi:10.11835/j.issn.1674-4764.2009.01.016

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考虑损伤的软土路基变形分析

更新时间：2023-11-28

- 考虑损伤的软土路基变形分析
- Deformation of Soft Ground with Consideration of the Concomitant Damage
- 土木与环境工程学报（中英文） 2009年31卷第1期页码：77-82
- 作者机构：
  
  1. 四川大学水利水电学院,四川,成都,610065
  2. 浙江大学软弱土与环境土工教育部重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
  
  国家自然科学研究基金资助(50379046)
- DOI：10.11835/j.issn.1674-4764.2009.01.016
  中图分类号：
- 纸质出版：2009
- 稿件说明：
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薛新华, 张我华. 考虑损伤的软土路基变形分析[J]. 土木与环境工程学报（中英文）, 2009,31(1):77-82.

XUE Xinhua, ZHANG Wohua. Deformation of Soft Ground with Consideration of the Concomitant Damage[J]. Journal of Civil and Environmental Engineering, 2009, 31(1): 77-82.
薛新华, 张我华. 考虑损伤的软土路基变形分析[J]. 土木与环境工程学报（中英文）, 2009,31(1):77-82. DOI： 10.11835/j.issn.1674-4764.2009.01.016.

XUE Xinhua, ZHANG Wohua. Deformation of Soft Ground with Consideration of the Concomitant Damage[J]. Journal of Civil and Environmental Engineering, 2009, 31(1): 77-82. DOI： 10.11835/j.issn.1674-4764.2009.01.016.

摘要

在连续损伤力学理论的基础上，提出了损伤孔隙介质的有效应力原理，推导了损伤孔隙介质完备有效的渗流连续性方程，对传统的DruckerPrager准则以及Biot固结理论的基本方程进行修正，并据此编制岩土介质流-固耦合的损伤变量有限元程序。然后，利用自主编制的损伤有限元程序对一简化的软土路基问题进行分析和研究，以典型节点为例，计算了软土路基模型的沉降值、孔压值和损伤变量等，并与解析解进行对比验证。结果表明文中自主编制的损伤有限元程序是合理的和有效的。

Abstract

On the basis of continuum damage mechanics theory

the effective stress theory of damaged porous media was presented and its modified selfcontained seepage differential equation was deduced. The traditional DruckerPrager yield criterion subsequently was modified

and a coupled seepage and damage finite element computer program compiled that was combined with the modified Biot consolidation equation. A simple roadbed foundation model then was analyzed and calculated using the computer program we compiled

and the typical node settlement

pore pressure

and damage variables were discussed and compared with those from the analytic solution. The results show that the damage finite element program we compiled is reasonable and effective.

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