摘要
为探讨公路路堑边坡滑坡体饱和度指标对其稳定性的影响,以山西省某段高速公路路堑边坡实体结构为研究对象,基于滑坡体饱和度对边坡稳定性影响的机理,引入有限元强度折减理论,借助Ansys有限元分析软件,建立了实体结构有限元模型,并得到滑坡体在不同饱和度条件下的位移场、应力场及应变场数值模拟结果。研究结果表明,随着饱和度的增加,滑坡体逐渐从稳定状态向失稳状态过渡;其中,在滑坡体饱和度从80%向100%过渡过程中,坡体x、指标εx出现同步陡降趋势,意味着坡体将出现不同程度的滑坡灾害。
To investigate the influence of the saturation degree of the landslide mass of the highway cutting slope on the slope stability,taking a physical structure of an expressway cutting slope in Shanxi Province as an example,based on the influencing mechanism of the saturation degree of the landslide mass on the slope stability and introducing the strength reduction theory,the finite element model was constructed by the Ansys finite element analysis tool.The numerical simulation results of the displacement field,stress field,and strain field of the landslide mass under different saturation degree conditions were obtained.The results show that with the increase of the saturation degree,the landslide mass gradually transitions from a stable state to an unstable state.During the transition of the landslide saturation degree from 80%to 100%,the indexes of the slope body,τxy andεxy,simultaneously dramatically decrease,indicating that the slope body will experience varying degrees of landslide disasters.
作者
赵俊龙
ZHAO Junlong(The Sixth Engineering Co.,Ltd.of Shanxi Road&Bridge Construction Group,Jinzhong,Shanxi O30600,China)
出处
《山西交通科技》
2025年第6期59-63,共5页
Shanxi Science & Technology of Transportation
关键词
边坡滑坡体
饱和度
强度折减理论
有限元模型
场分析
slope landslide mass
saturation degree
strength reduction theory
finite element model
field analysis
