摘要
京新高速韩集段某路堑高边坡,土体强度低,开挖稳定性差。为防止边坡施工和运营阶段时产生边坡失稳现象,基于控制变量法和正交试验法,考虑边坡稳定因素的相互影响关系,模拟分析了各因素对边坡稳定性影响的敏感程度。研究结果显示:在所研究的边坡稳定性影响因素中,土体内摩擦角对边坡稳定性影响最为显著,土体粘聚力和重度次之,土体弹性模量和泊松比则对边坡的稳定性影响不够明显;弹性模量和泊松比主要以两者相互作用共同影响边坡稳定性,其他因素并不以相互作用的形式影响边坡稳定性;最后,提出一些对路堑高边坡设计与施工有参考价值的建议。
High cutting slopes at the Hanji Section of Jing-Xin Highway have low soil strength and excavation stability. Aiming at controlling the setting and slipping in excavation and operation, this study, based on control variable and orthogonal test, in light of effects of stability factors, conducted simulation analysis of the sensitivity of different factor effect on the slope stability. Results showed that the effect of internal friction angle on slope stability was the most significant with cohesion and unit weight followed by. Elastic modulus and Poisson＇s ratio didn’t have significant effects on slope stability, but had a certain impact on stability when they interacted to-gether. Finally, it presented some valuable suggestions for designing and constructing the high cutting slopes.
出处
《华东交通大学学报》
2016年第2期114-120,共7页
Journal of East China Jiaotong University
关键词
路堑高边坡
稳定性安全系数
控制变量法
正交分析法
敏感性分析
high cutting slope
safety factor of stability
controlling variable method
orthogonal test
sensitivity simulation
