某路堑高边坡预应力锚杆支护参数优化分析  

Optimization Analysis of Prestressed Bolt Support Parameters of a High Cutting Slope

作　　者：韩伟华 Han Weihua(Shanxi Lihuo Expressway Co.,Ltd.,Changzhi 046000,China)

机构地区：[1]山西黎霍高速公路有限公司,长治市046000

出　　处：《北方交通》2021年第11期56-59,共4页Northern Communications

摘　　要：为保证某路堑高边坡预应力锚杆支护开挖中坡体稳定性,基于Midas/GTS有限元软件,对预应力锚杆支护参数进行了优化分析研究,得到如下结论:锚杆间距设置越小,单根锚杆受力相对更小,该路堑边坡锚杆水平间距选取3~4m最佳;锚杆倾角为15°~20°时,锚杆发挥作用最大,锚杆长度越长,边坡安全系数越高,但安全系数增大趋势变缓。In order to ensure the slope stability in the excavation of prestressed bolt support of a high cutting slope,the optimization analysis of prestressed bolt support parameters is studied based on Midas/GTS finite element software.The following conclusions are obtained:the smaller the bolt spacing is,the smaller the stress of a single bolt is,and the horizontal spacing of 3~4m for the cutting slope is the best;when the inclination angle of the bolt is 15°~20°,the bolt plays the greatest role.The longer the bolt length is,the higher the slope safety factor is,but the increasing trend of the safety factor slows down.

关 键 词：路堑边坡 均质高边坡 预应力锚杆 支护参数优化 

分 类 号：U416.14[交通运输工程—道路与铁道工程]