摘要
针对边坡临界滑动场方法一般选取剩余力作为控制指标的局限,基于简化Bishop法假定,在给定安全系数下,对圆弧滑动面和非圆弧滑动面分别选用剩余力矩(滑动力矩与抗滑力矩之差)和剩余法向力力作为控制指标,从众多的可行滑动面中选择控制指标最大的那个滑动面作为给定安全系数下的危险滑动面,不断变化安全系数直至找到控制指标最大值等于零的危险滑动面作为边坡临界滑动面,形成基于Bishop法假定的边坡临界滑动场方法。将该新方法应用于2个典型土坡的稳定性分析中,通过比较分析证明该方法与常规的Bishop法得到了一致的结果。
The control index of residual force is usually adopted in the general critical slip field method,in order to extend the critical slip field in terms of control index,the control index of residual moment which is defined as the difference between the sliding moment and anti-sliding moment for the circular slip surface and residual normal force at the exit point for the non-circular are used based on the Bishop method assumption at given factor of safety.The dangerous slip surface can be located from many potential slip surfaces having maximum value of control index at given factor of safety.The given factor of safety is altered to find critical slip surface which is the dangerous slip surface with zero maximum value of control index.This critical slip field algorithm with Bishop method is used to assess the stability of two typical slopes and the comparison to general Bishop method shows that this new algorithm is feasible and valid.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第9期2848-2852,共5页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(51008167)
高等学校博士学科点专项科研基金资助项目(20103721120001)
山东省高等学校科技计划项目(J10LE07)
关键词
岩土工程
边坡稳定
临界滑动场方法
BISHOP法
安全系数
geotechnical engineering
slope stability analysis
critical slip field
Bishop method
factor of safety
