| 加筋土抑制多年冻土区路基工程裂缝的效果评价 |
| |
| 引用本文： | 赵平,董淑海,许兆义,沈宇鹏.加筋土抑制多年冻土区路基工程裂缝的效果评价[J].北方交通大学学报,2011(4):13-17. |
| |
| 作者姓名： | 赵平 董淑海 许兆义 沈宇鹏 |
| |
| 作者单位： | [1]北京交通大学土木建筑工程学院,北京100044 [2]中国印刷集团公司,北京100055 [3]中交第三航务工程勘察设计院有限公司,上海200032 |
| |
| 基金项目： | 国家自然科学基金资助项目（50908012） |
| |
| 摘 要： | 不同冻土条件和路基结构将影响冻土区路基裂缝的发生和发展过程．文章分析了多年冻土区路基裂缝产生的原因，从宏观和微观的角度分析了加筋土抑制冻土裂缝的机理．以青藏铁路清水河加筋土路基试验段为工程实例，调查了该区域路基裂缝的形态，并对比分析了不同加筋方式的处理效果．结果表明，在清水河高温不稳定冻土区内，当加筋路堤中竖向加筋间距为0．6m时抑制多年冻土的裂缝效果最为有效．
|
| 关 键 词： | 多年冻土 裂缝 加筋土 青藏铁路 |
Effectiveness evaluation for reinforced geogrids to inhibiting embankment cracks in permafrost area |
| |
| ZI-IAO Ping,DONG Shuhai,XU Zhaoyi,SHEN YU PENG.Effectiveness evaluation for reinforced geogrids to inhibiting embankment cracks in permafrost area[J].Journal of Northern Jiaotong University,2011(4):13-17. |
| |
| Authors: | ZI-IAO Ping DONG Shuhai XU Zhaoyi SHEN YU PENG |
| |
| Institution: | 1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2.China Printing (Group) corporation, t3eijing 100055,China; 3. Third Harbor Consultants Co., Ltd, Shanghai 200032, China) |
| |
| Abstract: | There are some different stages for cracks on the period of occurring and development in dif- ferent condition of permafrost and subgrade structures. The causes of crack occurring are analyzed in the embankment of permafrost area, and the principle of inhibiting cracks in reinforced soils are ana- lyzed from macrography and microcosmic directions in the paper. The crack patterns are investigated in the test sections of Qingshuihe in Qinghai-Tibet railway and the treatment effect of different rein- forced way are comparatively analyzed. It shows that the subgrade with the space of 0.6 m is used in vertical direction is effective to prevent cracks. |
| |
| Keywords: | permafrost cracks reinforced soils Qinghai-Tibet railway |
| 本文献已被 维普 等数据库收录！ |
