| 非贯通节理岩体直剪贯通模型和强度研究 |
| |
| 引用本文： | 刘远明,夏才初.非贯通节理岩体直剪贯通模型和强度研究[J].岩土工程学报,2006,28(10):1242-1247. |
| |
| 作者姓名： | 刘远明 夏才初 |
| |
| 作者单位： | 同济大学土木工程学院地下建筑与工程系；同济大学土木工程学院地下建筑与工程系 上海200092；贵州大学土木建筑工程学院；贵州贵阳550003；上海200092； |
| |
| 摘 要： | 基于Lajtai和Jennings理论,研究了直剪应力状态下共面闭合非贯通节理岩体的受力特点,将非贯通节理岩体破坏分为三种模型;分析了各种模型的破坏机理;通过修正Lajtai理论,建立了非贯通节理岩体的贯通破坏强度准则。重点推导了岩桥以拉剪复合破坏时,非贯通节理岩体的峰值强度公式。通过与前人的试验比较,表明提出的破坏机理能较好地解释试验现象,理论计算的峰值强度与试验实测值吻合较好。
|
| 关 键 词： | 节理岩体 直剪 贯通模型 贯通破坏强度 破坏机理 |
| 文章编号： | 1000-4548（2006）10-1242-06 |
| 收稿时间： | 2005-07-22 |
| 修稿时间： | 2005-07-22 |
Study on models and strength behavior of rock mass containing discontinuous joints in direct shear |
| |
| LIU Yuan-ming,XIA Cai-chu.Study on models and strength behavior of rock mass containing discontinuous joints in direct shear[J].Chinese Journal of Geotechnical Engineering,2006,28(10):1242-1247. |
| |
| Authors: | LIU Yuan-ming XIA Cai-chu |
| |
| Affiliation: | 1.Department of Geotechnical Engineering School of Civil Engineering Tongji University Shanghai 200092 China 2.School of Civil Engineering and Architecture Guizhou University Guiyang 550003 China |
| |
| Abstract: | Based on the Lajtai’s theory and Jennings’ theory,the mechanical behavior of brittle rock mass containing coplanar close discontinuous joints under direct shear condition was analyzed.Three failure models were proposed,and the mechanism of the models was also analyzed.Through modifying the Lajtai’s theory,the failure strength criteria of such rock mass were proposed.The shear strength of jointed rock mass under the combined action of shear and tension was determined.The proposed mechanism could explain the phenomenon in direct shear test,and the calculated results coincided well with experimental results. |
| |
| Keywords: | jointed rock mass direct shear failure model failure strength failure mechanism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土工程学报》浏览原始摘要信息 |
|
点击此处可从《岩土工程学报》下载全文 |
