线缆涵洞上公路挖方陡坡优化设计  

Optimization Design of the Highway Excavation Slope on the Electric Cable Culvert

作　　者：林宇彬 陈孝湘 张昊 黄晓予 杨迪珊 LIN Yu-bin;CHEN Xiao-xiang;ZHANG Hao;HUANG Xiao-yu;YANG Di-shan(State Grid Fujian Electrie Power Co.Ltd,,Fuzhou 350012,China;POWERCHINA Fujian Electrie Power Engineering Co.Ltd,,Fuzhou 350003,China;State Grid F uzhou Electric Power Supply Company,Fuzhou 350009,China)

机构地区：[1]国网福建省电力有限公司经济技术研究院,福州市350012 [2]中国电建集团福建省电力勘测设计院有限公司,福州市350003 [3]国网福建省电力有限公司福州供电公司,福州市350009

出　　处：《公路》2020年第8期12-16,共5页Highway

基　　金：国网福建省电力有限公司科技项目,项目编号52130N17000A。

摘　　要：山区城市的高速公路及市政道路存在大量的挖填方边坡,当各类线缆或管道工程与道路线位交叉时,需要采用跨越或钻越的方案。从某城市城区内的电缆涵洞上高速公路边坡存在的结构自身的稳定问题以及公路边坡的水土保持问题出发,研究线缆涵洞上高速公路高边坡的优化设计方案,提出了涵洞抗滑稳定安全系数的计算方法,并在对边坡和涵洞整体稳定分析的基础上,提出了涵洞底部设置抗滑台阶、涵洞两侧壁设置抗拉锚杆等抗滑措施;最后,提出了采用加气混凝土作为陡坡上开挖沟槽回填土的水土保持方案。研究结果可为线缆涵洞上挖方边坡的设计提供依据,也为相关工程的建设提供参考。There are a large number of excavation and filling slopes on expressways and municipal roads in mountainous cities.When these various cables or pipelines intersect with road alignment,it is necessary to adopt the plan of over-crossing or under-crossing.Starting from the structural stability of the highway slope on cable culvert in a city and the soil and water conservation of the highway slope,in this paper the optimization design scheme of the highway slope on cable culvert is studied,the calculation method of the safety factor for the anti-slide stability of the culvert is put forward,and on the basis of the analysis on the overall stability of the slope and culvert,sliding resistance measures such as anti-sliding steps and anti-tension bolts on both sides of culvert are proposed.Finally,the soil and water conservation scheme of excavating trench backfill on steep slope with aerated concrete backfill is put forward,which provides basis for design of cut slope on the cable culvert and references for similar project construction.

关 键 词：涵洞 线缆 挖方边坡 抗滑台阶 抗拔锚杆 加气混凝土 优化设计 

分 类 号：U416.1[交通运输工程—道路与铁道工程]