| 修正双硬化参数模型对结构性土的适用性 |
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| 引用本文： | 喻葭临,孙逊,于玉贞,吕禾.修正双硬化参数模型对结构性土的适用性[J].广西大学学报(自然科学版),2009,34(3). |
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| 作者姓名： | 喻葭临 孙逊 于玉贞 吕禾 |
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| 作者单位： | 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 对沈珠江双硬化参数模型进行了修正以反映结构性土的胶结作用.为研究常规单屈服面弹塑性模型对于结构性土的适用性,了解其对结构性土力学特性的描述能力,以便对数值计算结果做出合理的评价,利用修正双硬化参数单屈服面弹塑性模型对人工制备结构性土的常规三轴试验结果进行了模拟.结果表明,该弹塑性模型更适合于胶结较弱的结构性土;但对于胶结强的结构性土,难以合理描述其宏观力学特性及其在低围压下的脆性破损过程.
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| 关 键 词： | 结构性土 修正双硬化参数模型 常规三轴试验 胶结 |
Applicability of modified double hardening model to structured soil |
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| YU Jia-lin,SUN Xun,YU Yu-zhen,LU He.Applicability of modified double hardening model to structured soil[J].Journal of Guangxi University(Natural Science Edition),2009,34(3). |
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| Authors: | YU Jia-lin SUN Xun YU Yu-zhen LU He |
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| Institution: | State Key Laboratory of Hydroscience and Engineering;Tsinghua University;Beijing 100084;China |
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| Abstract: | Shen's double hardening model is modified to reflect the bonding of structured soil.In order to investigate the applicability of the conventional single-yield-surface elasto-plastic model to structured soil so as to evaluate the numerical results of practical projects effectively,a series of conventional tri-axial test results of artificial structured soil are simulated with the modified model.The results show that this elasto-plastic model is more suitable for weak-bonding structured soil,but hard to refle... |
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| Keywords: | structured soil modified double hardening model conventional tri-axial test bonding |
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