| 土石混填路基沉降变形特征的离心模型试验研究 |
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| 引用本文： | 董云,柴贺军,阎宗岭. 土石混填路基沉降变形特征的离心模型试验研究[J]. 公路交通科技, 2007, 24(3): 25-29 |
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| 作者姓名： | 董云 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;河海大学,岩土工程研究所,江苏,南京,210097
2. 重庆交通科研设计院,重庆,400067 |
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| 基金项目： | 交通部西部交通建设科技资助项目(200231800034)，淮安市科技计划资助项目(HAG05-051) |
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| 摘 要： | 为了揭示土石混填路基的沉降变形特性,为设计和施工控制提供依据,进行了不同含水率、不同压实度和不同颗粒组成土石混填路基的离心模型试验,再现了土石混填路基的沉降变形性状。试验结果表明,路基沉降随压实度的降低和含水率的增加而线性增大;路基顶部从中线到路肩,沉降量逐渐减小,但水平位移逐渐增大。路基边坡顶部随路基沉降发生沉陷,但在1/3~2/3高度处,边坡的水平位移达到最大值,产生向外侧的变形。
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| 关 键 词： | 道路工程 土石混填 离心模型试验 沉降 物理模拟 |
| 文章编号： | 1002-0268(2007)03-0025-05 |
| 修稿时间： | 2005-10-21 |
Centrifugal Model Test Study on the Settlement Character of the Rock-soil Filled Roadbed |
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| DONG Yun,CHAI He-jun,YAN Zong-ling. Centrifugal Model Test Study on the Settlement Character of the Rock-soil Filled Roadbed[J]. Journal of Highway and Transportation Research and Development, 2007, 24(3): 25-29 |
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| Authors: | DONG Yun CHAI He-jun YAN Zong-ling |
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| Abstract: | To reveal the settlement mechanism of the rock-soil filled roadbed,and provide basis for design and construction,this study carried centrifugal model test through rock-soil filled roadbed with different density and different granule composition,the test(reproduce) the process and the final mode of the settlement.The test results showed that the settlement of the rock-soil filled roadbed increased(linearly) with the reduction of compactness and increase of water content,the settlement decreased from midline to shoulder on the top of the roadbed,with the horizontal displacement increased.On the top of the side slope occured sink with the horizontal displacement up to the maximum on the height of 1/3 to 2/3,and with outward distortion. |
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| Keywords: | road engineering rock-soil filled centrifugal model test settlement physics simulation |
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