| 反倾层状岩质边坡倾倒破坏力学模型 |
| |
| 引用本文： | 张以晨,佴磊,沈世伟,王洁玉. 反倾层状岩质边坡倾倒破坏力学模型[J]. 吉林大学学报(地球科学版), 2011, 0(Z1): 207-213 |
| |
| 作者姓名： | 张以晨 佴磊 沈世伟 王洁玉 |
| |
| 作者单位： | 吉林大学建设工程学院;吉林省地质环境监测总站; |
| |
| 基金项目： | 交通部科研项目(2007-353-322-080); 吉林省交通厅科研项目(2006-4-13) |
| |
| 摘 要： | 在地质调查基础上,将反倾边坡的各岩块概化为受自重弯矩及外力作用的悬臂梁,利用弯曲-拉裂模型研究其破坏模式。通过力学分析,建立了反倾层状岩质边坡各条块的力学模型。基于最大拉应力理论,给出条块倾倒失稳判据,以此判定边坡的稳定性,并定量分析了反倾边坡倾倒破坏的影响因素。结果表明:反倾边坡倾倒破坏发生在每个条块的上边界处,条块所受拉应力大小与其容重呈线性关系,与高度呈二次幂函数关系,与其宽度呈-1次幂函数关系,即板梁容重越大、高度越大、宽度越小,其倾倒破坏越明显。而当条块底面倾角满足一定条件时,才会发生倾倒破坏,其范围边界值与条块的高度和宽度有关。
|
| 关 键 词： | 边坡 反倾层状岩体 力学模型 倾倒判据 弯曲-拉裂模型 最大拉应力理论 |
Mechanical Models of Anti-Dip Layered Rock Slope Toppling Failure |
| |
| ZHANG Yi-chen,,NAI Lei,SHEN Shi-wei,WANG Jie-yu .College of Construction Engineering,Jilin University,Changchun ,China .Jilin Institute of Geo-Environment Monitoring,Changchun ,China. Mechanical Models of Anti-Dip Layered Rock Slope Toppling Failure[J]. Journal of Jilin Unviersity:Earth Science Edition, 2011, 0(Z1): 207-213 |
| |
| Authors: | ZHANG Yi-chen NAI Lei SHEN Shi-wei WANG Jie-yu .College of Construction Engineering Jilin University Changchun China .Jilin Institute of Geo-Environment Monitoring Changchun China |
| |
| Affiliation: | ZHANG Yi-chen1,2,NAI Lei1,SHEN Shi-wei1,WANG Jie-yu2 1.College of Construction Engineering,Jilin University,Changchun 130026,China 2.Jilin Institute of Geo-Environment Monitoring,Changchun 130021,China |
| |
| Abstract: | Based on geological survey,each rock block of anti-dip slope is supposed to be a cantilever beam influenced by deadweight moment and external force,and the failure mode is studied with bending and tension-crack model.The mechanical model of anti-dip layered rock slope is established with mechanical analysis.Based upon maximum tensile stress theory,the slope stability is judged with toppling instability criterion of each block.Besides,the influencing factors of anti-dip slope toppling failure are analyzed qu... |
| |
| Keywords: | slope stability anti-dip layered rock mass mechanical model toppling criterion bending and tension-crack model maximum tensile stress theory |
| 本文献已被 CNKI 等数据库收录！ |
|
