高强锚杆在路基边坡支护中的支护效果研究  

Study on the Effect of High-strength Anchor Bar in the Support of Roadbed Slope

作　　者：邓跃华 DENG Yuehua(China Railway 16^(th)Bureau Group Second Engineering Co.Ltd.,Tianjin 300162,China)

机构地区：[1]中国铁建十六局集团第二工程有限公司,天津300162

出　　处：《铁道建筑技术》2021年第8期75-79,共5页Railway Construction Technology

基　　金：中国铁建股份有限公司科技研究开发计划项目(14-C011)。

摘　　要：依托成兰铁路CLZQ-4标段边坡防护工程,选取条件基本相同的30 m路基高边坡锚杆框架梁为试验段,对22 mm高强锚杆与32 mm普通锚杆支护下的边坡位移及锚杆受力进行监测,并对监测数据进行对比分析以确定高强锚杆在路基边坡中的支护效果。研究表明:22 mm高强锚杆与32 mm普通锚杆支护下边坡支护效果无明显差别,整体防护效果22 mm高强锚杆略好于32 mm普通锚杆;采用22 mm高强锚杆能够替代32 mm普通锚杆,且具有可观的间接经济效益。Relying on the CLZQ-4 bid slope protection project of Chengdu-Lanzhou Railway,the framework beam of the 30 m roadbed high slope anchor bar with basically the same conditions was selected as the test segment,the slope displacement and anchor bar force under the support of the 22 mm high-strength anchor bar and the 32 mm normal anchor bar were monitored,and the support effect of high-strength anchor bar in the roadbed slope was determined by comparing and analyzing the monitoring data. The results show that there is no obvious difference in the slope supporting effect between the22 mm high-strength anchor bar and the 32 mm normal anchor bar,the overall support effect of the 22 mm high-strength anchor bar is slightly better than the 32 mm normal anchor bar;the use of 22 mm high-strength anchor bar can replace the32 mm normal anchor bar,and has considerable indirect economic benefits.

关 键 词：高强锚杆 普通锚杆 实测 支护效果 对比 经济效益 

分 类 号：U213.158[交通运输工程—道路与铁道工程]