摘要
Abstract
In order to optimize the support design of high slope,this paper takes a highway high slope support project as an example,and a-dopts numerical simulation and monitoring technology to study the effects of prestressed loss of different anchor rods on the safety factor,maxi-mum displacement,horizontal displacement and vertical displacement of slope.The results show that the prestress loss of bolt has a significant negative impact on the safety factor,especially when the loss exceeds 24%,the safety factor is less than the standard limit value 1.3,resulting in structural instability.Under the same loss condition,the influence of prestress loss on displacement of the first grade slope is greater than that of the second grade slope,especially when the loss reaches 48%,the maximum displacement of the first grade slope is 33.4mm,which is 10.6%higher than that of the second grade slope.At the same time,in the same grade slope,the prestress loss of the bottom row anchor rod has greater influence on the displacement than that of the top row anchor rod.When the bottom row anchor rod loses 48%,the maximum dis-placement is 31.8mm,which is 3.9%and 20.5%higher than that of the top row and the middle row respectively.Therefore,it is necessary to pay special attention to the prestress loss of the first grade slope and the lower row anchor rod during construction.关键词
高边坡稳定性/预应力损失/数值模拟Key words
Stability of high slope/Prestress loss/Numerical simulation分类
交通工程
