| 土石混填路基变形破坏机制的底摩擦试验模拟 |
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| 引用本文： | 董云,黄湖锋,柴贺军,阎宗岭.土石混填路基变形破坏机制的底摩擦试验模拟[J].中南公路工程,2006,31(4):4-8. |
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| 作者姓名： | 董云 黄湖锋 柴贺军 阎宗岭 |
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| 作者单位： | [1]淮阴工学院建筑工程系,江苏淮安223001 [2]浙江省宏途交通建设有限公司,浙江杭州310013 [3]重庆交通科研设计院,重庆400067 |
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| 基金项目： | 交通部西部建设科技项目资助（2002 318 000 34） |
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| 摘 要： | 土石混填路基在我国西部山区已被广泛采用，但由于设计、施工规范不完善，路基经常出现多种形式的病害，降低了公路的服务水平。揭示土石混填路基的变形破坏机理，为设计和施工控制提供依据，本研究采用自动化底摩擦仪，进行了不同填筑形式，不同压实度的土石混填路基的底摩擦试验，再现了路基的变形破坏过程和最终的破坏模式。研究结果表明，土石混填路基的破坏主要源于坡脚失稳和不均匀沉降，最终的破坏模式可归结为路基边坡的滑塌和不均匀沉降导致的路基纵向开裂。对于坡度较小的斜坡路基，通过开挖台阶，可有效地提高路基的稳定性。
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| 关 键 词： | 路基 土石混填 变形破坏 底摩擦 模拟 |
| 文章编号： | 1002-1205(2006)04-0004-05 |
| 收稿时间： | 2005-08-03 |
| 修稿时间： | 2005年8月3日 |
Floor-friction Simulation on the Deformation and Failure Mechanism of the Rock-soil Filled Roadbed |
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| DONG Yun, HUANG Hufeng, CHAI Hejun, YAN Zonglin.Floor-friction Simulation on the Deformation and Failure Mechanism of the Rock-soil Filled Roadbed[J].Central South Highway Engineering,2006,31(4):4-8. |
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| Authors: | DONG Yun HUANG Hufeng CHAI Hejun YAN Zonglin |
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| Institution: | 1.Department of civil engineering, Huaiyin Institute of technology, Huaian Jiangsu 223001, China; 2.Zhejiang Provincial Hongtu Transportation Construction Co. Ltd, Hangzhou Zhcjiang 310013, China;3. Chongqing Communication Research and Design Institute, Chongqing 400067, China |
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| Abstract: | Rock-soil filled roadbed is broadly adopted in western mountain areas,it often occur multi-disease problems which reduce the service level of the road.To post the deformation and failure mechanism of the rock-soil filled roadbed,and provide basis for design and construction,this study carried floor-friction test through rock-soil filled roadbed with different density,different fill section on roboticized floor-friction instrument,the simulation reappeared the process and the final mode of the roadbed deformation and failure.Test results showed: the root of the rock-soil filled roadbed failure is mostly asymmetry settlement and slope slide,the final failure mode could come down to slope slide and portrait craze caused by asymmetry settlement.Cutting step could effectively improve the stability to those roadbeds which build on small grade floor. |
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| Keywords: | roadbed rock-soil filled deformation and failure floor-friction |
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