| 无限长土坡滑移变形模拟 |
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| 引用本文： | 谢州,周成,刘焦,曾子.无限长土坡滑移变形模拟[J].山地学报,2012(1):65-69. |
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| 作者姓名： | 谢州 周成 刘焦 曾子 |
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| 作者单位： | 四川大学水利水电工程学院水力学与山区河流保护国家重点实验室 |
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| 基金项目： | 国家自然科学基金重点项目(90815024)~~ |
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| 摘 要： | 从建立土体应力平衡微分方程入手,在平面应变的假定下求解均质无限长土坡的应力平衡方程。通过拟定坡土的滑移速度和粘塑性应变率的关系式,以剑桥模型为依托,得出滑移变形速率的显式表达式,由此推出土坡滑动位移的计算式。因为模型计算值与实测值无论变形趋势还是大小都有不少误差,所以经修正粘滞性参数来改进模型的模拟精度。最后通过一个算例,将现场实测滑移数据和模型计算值进行比较,分析表明二者较为一致。
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| 关 键 词： | 土坡滑移 粘塑性应变率 粘滞性 解析解 |
Simulation of the Deformation of Infinite Soil Slope |
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| XIE Zhou,ZHOU Cheng,LIU Jiao,ZENG Zi.Simulation of the Deformation of Infinite Soil Slope[J].Journal of Mountain Research,2012(1):65-69. |
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| Authors: | XIE Zhou ZHOU Cheng LIU Jiao ZENG Zi |
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| Institution: | (College of Hydraulic and Hydroelectric Engineering,National Key Laboratory of Hydraulic and Mountain River Engineering,Sichuan University,Chengdu 610065,China) |
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| Abstract: | Element stress is derived from the stress equilibrium differential equations under the plane strain conditions.Viscoplasticity model is used between velocity and the viscoplastic strain of the slope soil.Then Cam-Clay model is used to derive the explicit expressions of the deformation rate with the depth of slope soil.The slope deformation is calculated.Simulation accuracy is improved by modifying the viscosity.Finally,numerical example is given in comparison with the field measured data and good agreement is achieved. |
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| Keywords: | deformation of slope soil viscoplastic strain rate viscosity analytical solution |
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