| 寒冷地区路基冻胀的计算模型和方法研究 |
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| 引用本文： | 李洪升,王悦东,刘增利.寒冷地区路基冻胀的计算模型和方法研究[J].铁道科学与工程学报,2011,8(1):34-38. |
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| 作者姓名： | 李洪升 王悦东 刘增利 |
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| 作者单位： | 1. 大连理工大学工程力学系,辽宁,大连,116024
2. 大连交通大学交通运输工程学院,辽宁,大连,116028 |
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| 基金项目： | 国家自然科学基金资助项目(10472020); 大连理工大学退休人员专项基金项目(DUTTX2009103) |
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| 摘 要： | 从路基冻胀机理出发,把冻胀过程的路基主体划分为3个区段:冻土区,冻结缘区和未冻土区,充分考虑冻结缘区的桥连作用,把3区段连在一起构成了桥连式冻胀模型.根据各区段的本质特征和主导作用,建立了相应的控制方程,并用连接条件构成一个完整的求解体系,采用半解析数值法对路基冻胀可进行定量计算.通过实例计算证明.结果与实例值吻合较好...
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| 关 键 词： | 冻土路基 冻胀 桥连模型 计算方法 |
Calculation model of roadbed frozen frost on the cold zone |
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| LI Hong-sheng
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WANG Yue-dong
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LIU Zeng-li.Calculation model of roadbed frozen frost on the cold zone[J].Journal of Railway Science and Engineering,2011,8(1):34-38. |
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| Authors: | LI Hong-sheng WANG Yue-dong LIU Zeng-li |
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| Institution: | LI Hong-sheng1,WANG Yue-dong2,LIU Zeng-li1(1.Department of Engineering Mechanics,Dalian University of Technology,Dalian 116023,China,2.School of Traffic & Transportation,Dalian Jiaotong University,Dalian 116028,China) |
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| Abstract: | From the roadbed freezing expansion principle,the frost heave process of roadbed soil is classified into three sections: the frozen zone,freezing margin zone and Non-freeze zone.Full consideration of link function of freezing margin zone,the bridge-link frost heaving model was proposed in this paper.According to the different sections of the role,the control equations,and connection condition to complete solution system were established.By using the semi-analytical numerical method,the roadbed freezing expa... |
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| Keywords: | frozen soil road base frozen heaven bridge-link model compute method |
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