岩土工程学报2013，Vol.35Issue(2)：348-354,7.
基于节理产状不确定性的边坡稳定性及敏感度分析
Stability and sensitivity analysis of slopes based on uncertainty of joint orientations
王双 1陈征宙 2吴强 1黄彬彬 3胡谢飞1
作者信息
- 1. 南京大学地球科学与工程学院,江苏南京210093
- 2. 中国民航机场建设集团公司西南分公司,四川成都610202
- 3. 福建省电力勘测设计院,福建福州350003
- 折叠
摘要
Abstract
The orientations of joints which obey the Fisher distribution are simulated according to the Monte Carlo method. The safety factor of each simulated orientation is calculated and the distribution rules of safety factor and the reliability of slopes are obtained by statistical fitting. In order to consider the sensitivity of safety factor to dip direction and dip of joints simultaneously, an idea that the sensitivity of safety factor to the orientation is represented by that to spherical distance of normal vector is proposed. It is also suggested to characterize the sensitivity to arbitrary orientation by means of the sensitivity of average and the maximum value. Drawing safety factor and sensitivity contour map on stereonet makes it possible to visualize the analysis results. The analysis of a specific problem shows that the recommended analytical methods are helpful to gain a complete and intuitive view of the effect of joint uncertainty on safety factor. The potential safety concerns due to the discrete measured data of orientations may be eliminated and the deficiency that the sensitivity analysis is formerly processed by dealing with dip and dip direction respectively can be solved.关键词
球面数据/节理产状/不确定性/边坡可靠性/敏感度/等值线图Key words
spherical data/ joint orientations/ uncertainty, slope reliability, sensitivity, contour map分类
建筑与水利引用本文复制引用
王双,陈征宙,吴强,黄彬彬,胡谢飞..基于节理产状不确定性的边坡稳定性及敏感度分析[J].岩土工程学报,2013,35(2):348-354,7.
