基于突变理论的软粘土蠕变变形经验公式研究 |
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引用本文: | 何利军,蔡羽.基于突变理论的软粘土蠕变变形经验公式研究[J].路基工程,2011,0(2):8-9,13. |
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作者姓名: | 何利军 蔡羽 |
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作者单位: | 1.中国科学院武汉岩土力学研究所, 武汉 430071 |
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摘 要: | 将尖点突变模型和燕尾突变模型应用于软粘土三轴剪切蠕变试验的蠕变变形经验公式研究,得到了不同应力水平的剪应力-轴向应变-时间(q-ε1-t)之间的关系表达式,以及能综合描述各种应力水平的围压-剪应力-轴向应变-时间(σ3-q-ε1-t)之间的关系表达式,两种表达式均与数据吻合良好。
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关 键 词: | 突变理论 尖点突变模型 燕尾突变模型 |
收稿时间: | 2019-11-09 |
Study on Empirical Formula of Soft Clay Creep Deformation Based on Catastrophe Theory |
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Authors: | HE Li-jun CAI Yu |
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Institution: | 1.Wuhan Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;2.CCCC Fourth HarborEngineering Institute Co.,Ltd.,Guangzhou 510230,China) |
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Abstract: | Cusp catastrophe model and coattail catastrophe model are applied in the study of empirical formula of soft clay creep deformation in tri-axial shear creep test.The relational expression among shear stress,axial strain and time(q-ε1-t) under different stress levels,and the relational expression among confining pressure,shear stress,axial strain and time(σ3-q-ε1-t) that can comprehensively describe various stress levels are obtained.These two expressions are in good conformity with the data. |
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Keywords: | catastrophe theory cusp catastrophe model coattail catastrophe model |
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