| 软土的非线性弹性卸荷损伤模型 |
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| 引用本文： | 李蓓,赵锡宏.软土的非线性弹性卸荷损伤模型[J].同济大学学报(自然科学版),2005,33(6):737-741. |
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| 作者姓名： | 李蓓 赵锡宏 |
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| 作者单位： | 1. 同济大学,地下建筑与工程系,上海,200092;水利部太湖流域管理局,上海,200434
2. 同济大学,地下建筑与工程系,上海,200092 |
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| 摘 要： | 在损伤土力学的基础上,结合上海软土的卸荷应力路径试验结果,构造损伤势函数,建立考虑卸荷损伤的非线性弹性应力应变关系.作为验证,应用该卸荷损伤模型,分析上海软土的卸荷应力路径试验,对理论分析与试验结果进行比较,表明该模型能够较好地描述软土的卸荷应力应变关系.计算结果表明,不同应力路径条件对土体的变形特性有显著影响.
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| 关 键 词： | 软土 损伤 非线性弹性 卸荷 |
| 文章编号： | 0253-374X(2005)06-0737-05 |
Non-linear Elastic Unloading Damage Model for Soft Soil |
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| Li Bei,ZHAO Xi-hong.Non-linear Elastic Unloading Damage Model for Soft Soil[J].Journal of Tongji University(Natural Science),2005,33(6):737-741. |
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| Authors: | Li Bei ZHAO Xi-hong |
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| Abstract: | Based on damage soil mechanics,a non-linear elastic stress strain relationship considering unloading damage for soft soil is set up,in which damage potential function is built with unloading stress path test results of soft soil in Shanghai.This unloading damage model is used to simulate unloading stress path test.The comparison between theoretical analysis and test result indicates that this model can describe unloading stress strain response properly.The theoretical calculation result shows that stress path has notable influence on soil deformation. |
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| Keywords: | soft soil damage non-linear elastic unloading |
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