防灾减灾工程学报2013，Vol.33Issue(4)：418-423,6.
Bishop法的简化计算假设对边坡安全系数的影响
Influences of Simplified Assumptions of Bishop Method on Slope Safety Factor
黄彬彬 1陈征宙 1王双 1胡谢飞1
作者信息
- 1. 南京大学地球科学与工程学院,南京210093
- 折叠
摘要
Abstract
It is common to simplify some calculation conditions when applying slice method to calculate the factor of safety of a slope.In this paper,the influences of the simplification of slice gravity center and seismic load imposition on the factor of safety are discussed by several design projects via the Bishop method.The applied direction of vertical seismic load is also considered.The results show that:(1)The influence of the simplification of slice gravity center on safety factor can be neglected.(2)When considering the simplification of the imposition of seismic load,the deviation generally decreases with slope ratio reducing and central angle increasing of the slip surface.On the contrary,the increase of the height of the slope and the design earthquake intensity has negative effects on the deviation.Besides,the variation of cohesion and internal frictional angle has little influence on deviation.(3)The selection of vertical seismic force direction mainly depends on designed seismic intensity.The slope height further affects the critical parameter values of direction changing at the same earthquake intensity level.关键词
条分法/Bishop法/重心简化/地震力施加方式/竖向地震力/误差分析Key words
slice method/ Bishop method/ simplified gravity center/ the applied method of seismic forces/ vertical seismic forces/ error analysis分类
数理科学引用本文复制引用
黄彬彬,陈征宙,王双,胡谢飞..Bishop法的简化计算假设对边坡安全系数的影响[J].防灾减灾工程学报,2013,33(4):418-423,6.
