摘要
以高陡边坡工程为例,运用MIDAS GTS NX有限元软件建立平面应力-应变模型,采用强度折减方法进行分析。结果表明:高边坡工程在加固前由于不稳定性,局部崩塌,所以必须采取支护措施。通过案例着重研究在锚杆支护前/后边坡位移变化、塑性破裂带及安全系数变化情况,才能计算出不同锚杆长度和倾斜角度对边坡整体稳定性的影响,确定最优支护方案。由此总结出锚杆长度和锚固倾角与边坡安全系数之间的函数曲线关系,可为边坡治理设计和施工提供数据依据,也可为类似工程边坡加固抗滑稳定性分析提供参考。
Taking the high&steep slope engineering as an example,the plane stressstrain model is established by using the MIDAS GTS NX finite element software,and the strength reduction method is used for analysis.The results indicate that support measures must be taken for high slope engineering due to instability and local collapse before reinforcement.By focusing on studying the changes in slope displacement,plastic fracture zone,and safety factor before and after anchor rod support through case studies,the impact of different anchor rod lengths and inclination angles on the overall stability of the slope can be calculated,and the optimal support plan can be determined.From this,the functional curve relationship between the length and inclination angle of anchor rods and the safety factor of slopes can be summarized,which can provide data basis for slope treatment design and construction,and also provide reference for similar engineering slope reinforcement and anti-slip stability analysis.
作者
曹日跃
CAO Ri-yue(Anhui Guoshun Transportation Consulting Design&Research Institute Co.,Ltd.,Hefei 230000,China)
出处
《中国市政工程》
2023年第2期51-55,107,共6页
China Municipal Engineering
关键词
岩质边坡
锚杆支护
强度折减
有限元分析
rock slope
anchor rod support
strength reduction
finite element analysis
