摘要
为分析均质路堤、路堑边坡稳定性影响因素的敏感性,采用正交试验设计,结合抗剪强度折减有限元法,以边坡稳定安全系数为考察指标,对50个算例结果进行了极差分析.结果表明,影响路堤稳定性因素的敏感性大小排序为:粘聚力、内摩擦角、坡角、坡高、容重、弹性模量、泊松比、宽度、均布压力;影响路堑边坡稳定性因素的敏感性大小排序为:内摩擦角、坡高、粘聚力、坡角、容重、弹性模量、泊松比.分析结果对公路边坡工程的设计与施工具有借鉴意义.
In order to analyze the sensibility of impact factors on the stability of homogeneous embankment and cutting slope,50 slope cases were discussed by orthogonal design and strength reduction method with finite elements. The results indicated that the sensibility of impact factors on embankments was in the following order： cohesion, internal friction angle, slope angle, height, volumetric weight, elasticity modulus, Poisson＇s ratio, width and uniform pressure; the sensibility of impact factors of cutting slopes was in the following order： internal friction angle, height, cohesion, slope angle, volumetric weight, elasticity modulus and Poisson＇s ratio. These results can be used for reference in design and construction of slope engineering.
出处
《甘肃科学学报》
2012年第3期40-44,共5页
Journal of Gansu Sciences
基金
教育部高等学校博士学科点专项科研基金(20093204110008)
关键词
路堤
路堑
边坡稳定性
敏感性
正交设计
强度折减有限元法
安全系数
embankment
cutting
slope stability
sensibility
orthogonal design
strength reduction methodwith finite element
safety factor
