|
|||||
|
|
| 多年冻土地区路基不均匀融沉变形计算分析 | |
| 引用本文： | 马骉,鲍燕妮,姬杨蓓蓓.多年冻土地区路基不均匀融沉变形计算分析[J].公路交通科技,2007,24(1):6-9,25. |
| 作者姓名： | 马骉 鲍燕妮 姬杨蓓蓓 |
| 作者单位： | 1. 长安大学,特殊地区公路工程教育部重点实验室,陕西,西安,710064 2. 同济大学,建筑设计研究院工程市政分院,上海,200092 3. 同济大学,道路与交通工程教育部重点实验室,上海,200092 |
| 基金项目： | 交通部西部交通建设科技资助项目(2002-318-812-05) |
| 摘 要： | 针对多年冻土地区普遍存在的路基不均匀融沉变形现象,根据弹塑性固结理论,采用有限元方法对路基融沉变形进行计算分析,探讨了边界排水条件对路堤融沉变形以及路基表面水平位移的影响,并分析了地基融深和路堤高度对沉降的影响。研究结果表明,路基沉降随融深的增加而增加,排水状态的路基融沉变形比不排水的融沉变形大;路基融沉变形随路堤高度的增加而增加,路基是否排水对路基融沉变形和路基水平位移有显著影响。计算结果与实测值比较,所建立模型的理论计算值与实际观测结果基本一致,回归结果得出多年冻土地区路基融沉变形规律。 |
| 关 键 词： | 多年冻土 路基 不均匀融沉变形 有限元 融沉变形规律 |
| 文章编号： | 1002-0268（2007）01-0006-04 |
| 修稿时间： | 2005-08-04 |
Calculation and Analysis of Subgrade's Non-uniform Melt Settlement Deformation in Perennially Frozen Soil Zone |
|
| MA Biao,BAO Yan-ni,JIYANG Bei-bei.Calculation and Analysis of Subgrade''''s Non-uniform Melt Settlement Deformation in Perennially Frozen Soil Zone[J].Journal of Highway and Transportation Research and Development,2007,24(1):6-9,25. | |
| Authors: | MA Biao BAO Yan-ni JIYANG Bei-bei |
| Abstract: | The universal phenomenon of non-uniform melt settlement deformation in perennially frozen soil zone is analyzed.There is general inhomogeneous melt settlement deformation in perennially frozen soil zone,which makes additional stress created in pavement structure.According to the elastic-plastic consolidation theory,the melt settlement deformation of subgrade and horizontal displacement of subgrade surface are calculated under different drainage condition using finite element method.The influence of the melt depth and height of subgrade to the deformation is also analyzed.Based on theoretical calculation being concordant with the actual measurement,the melt settlement deformation law in perennially frozen soil zone is achieved in this article. |
| Keywords: | perennially frozen soil zone subgrade non-uniform melt settlement deformation finite element method melt settlement deformation law |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |