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| 复杂应力下强风化软岩湿化变形试验研究 | |
| 引用本文： | 刘新喜,夏元友,刘祖德,陈向阳,宁齐元.复杂应力下强风化软岩湿化变形试验研究[J].岩石力学与工程学报,2006,25(5):925-930. |
| 作者姓名： | 刘新喜 夏元友 刘祖德 陈向阳 宁齐元 |
| 作者单位： | 1. 武汉理工大学,土木工程与建筑学院,湖北,武汉,430070 2. 武汉大学,土木建筑工程学院,湖北,武汉,430072 3. 湖南城市学院,土木工程学院,湖南,益阳,413000 4. 湖南理工职业技术学院,湖南,湘潭,411100 |
| 基金项目： | 教育部跨世纪优秀人才培养计划;重庆市应用基础研究基金;湖北省杰出青年科学基金 |
| 摘 要： | 强风化软岩用于高等级公路路基填筑时，压实特性和湿化变形特性是评价填料性能的主要指标。对填料在不同压实度下进行承载比试验，试验结果表明，承载比值随填料压实度的增大而增大。利用室内三轴剪切仪对强风化软岩进行干、湿双线平行试验和在复杂应力状态下不同压实度的湿化变肜认验，试验结果表明，填料在压实度为90％且有较大的偏应作用下，湿化不仅产生较大的附加轴向应变，而且还能引起相当大的附加体积应变和偏应变。因此，提高路基填士的压实度是减少湿化变形的关键因素。 |
| 关 键 词： | 岩石力学 复杂应力 强风化软岩 湿化变形 压实度 |
| 文章编号： | 1000-6915（2006）05-0925-06 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 2005-10-172005-12-19 |
EXPERIMENTAL STUDY ON SLAKING DEFORMATION OF INTENSE WEATHERING SOFT ROCK UNDER COMPLICATED STRESS CONDITIONS |
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| LIU Xinxi,XIA Yuanyou,LIU Zude,CHEN Xiangyang,NING Qiyuan.EXPERIMENTAL STUDY ON SLAKING DEFORMATION OF INTENSE WEATHERING SOFT ROCK UNDER COMPLICATED STRESS CONDITIONS[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):925-930. | |
| Authors: | LIU Xinxi XIA Yuanyou LIU Zude CHEN Xiangyang NING Qiyuan |
| Affiliation: | 1. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, Hubei 430070, China; 2. School of Civil andArchitectural Engineering, Wuhan University, Wuhan, Hubei 430072, China; 3. Institute of Civil Engineering, Hunan City University, Yiyang, Hunan 413000, China; 4. Hunan Vocational Institute of Technology, Xiangtan, Hunan 411100, China |
| Abstract: | When using intense weathering soft rock to fill high grade highway embankment, compaction characters and wetting deformation characters are the major indices to estimate the filling performance. The CBR experiments under different compaction degrees showed that the CBR value increased with the filling compaction degree increase. Triaxial shear apparatus was used to conduct dry-wet double-line parallel experiment and wetting deformation experiment of different compactions under complicated stress conditions. The result shows when the compaction degree reaches to 90% with rather high deviatoric stress, wetting can not only generate high additional axial deformation, but also cause high additional volumetric strain and deviatoric deformation. Increasing compaction degree of the filling is the key factor to decrease wetting deformation. |
| Keywords: | rock mechanics complicated stress intense weathering soft rock slaking deformation compacting factor |
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