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投稿时间：2006-06-22
投稿时间：2006-06-22
中文摘要: 根据土的变形特点，采用双标量描述土的各向同性弹性损伤，将土看成是由两种材料组成的复合体，一种材料的柔度矩阵仅与土的弹性模量有关，而另一种材料的柔度矩阵仅与土的剪切模量有关。分别定义各自的损伤变量，并根据等效应力原理建立各自的损伤本构方程，最后通过合成获得了土的弹性非线性损伤本构方程，并根据土的三轴试验结果确定损伤演化方程，在此基础上建立了一个土的弹性非线性各向同性损伤模型。将其运用到地基沉降计算中，与实测结果进行比较，验证了本模型的正确性。
Abstract:An elastic nonlinear damage model of soil was presented according to the deformation property of soil. The soil was considered as a double scalar combining, the one is G material which flexible matrix is only relate to shear modulus of soil ,the other is E material which flexible matrix have only a connection with elastic modulus of soil. Defining double scalar to describe soil damage, respectively, using equivalent strain principle to establish elastic damage constitute relationship, respectively, through mergeing to attain elastic damage constitute equation of soil and obtain the evolution equation based on triaxial test, an elastic nonlinear damage model was presented. The model was applied to calculate foundation settlement and compared with tested results. The results showed that the model is rational.
文章编号：20070204 中图分类号： 文献标志码：
基金项目:国家重点基础研究发展计划973计划资助项目(2003CB415202-3);国家自然科学基金资助项目(40572158)
| 作者 | 单位 |
| 雷孝章 | 四川大学 水力学及山区河流开发保护国家重点实验室,四川 成都 610065 |
| 何思明 | 中国科学院 成都山地灾害与环境研究所，四川 成都 610041 |
| 唐学文 | 重庆市水土保持生态环境监测总站，重庆 401147 |
作者简介:
引用文本：
雷孝章,何思明,唐学文.双标量描述下土的弹性非线性损伤模型[J].工程科学与技术,2007,39(2):20-24.
.Elastic Nonlinear Damage Model of Soil Expressed by Double Scalar[J].Advanced Engineering Sciences,2007,39(2):20-24.
引用文本：
雷孝章,何思明,唐学文.双标量描述下土的弹性非线性损伤模型[J].工程科学与技术,2007,39(2):20-24.
.Elastic Nonlinear Damage Model of Soil Expressed by Double Scalar[J].Advanced Engineering Sciences,2007,39(2):20-24.