微型钢管群桩与抗滑桩联合支护方案在高速公路隧顶滑坡处治中的应用  

Application of Micro Steel Tube Group Pile and Anti-slide Pile Combined Supporting Scheme in Treatment of Highway Tunnel Top Landslide

作　　者：苟栋元 刘中帅 李海平[1,2,3] GOU Dongyuan;LIU Zhongshuai;LI Haiping(China Merchants Chongqing Communications Technology Research & Design Institute Co.,Ltd.,Chongqing 400067,China;National Engineering & Research Center for Highways in Mountain Area,Chongqing 400067,China;National Local Joint Engineering Laboratory for Road Engineering and Disaster Prevention and Reduction Technology in Mountainous Areas,Chongqing 400067,China)

机构地区：[1]招商局重庆交通科研设计院有限公司,重庆400067 [2]国家山区公路工程技术研究中心,重庆400067 [3]山区道路工程与防灾减灾国家地方联合工程实验室,重庆400067

出　　处：《公路交通技术》2019年第5期19-24,共6页Technology of Highway and Transport

基　　金：广东省交通运输厅科技项目(2017-02-005; 2017-02-008)

摘　　要：贵州省S203石阡板桥至冷龙公路K54+800~900段滑坡位于思剑高速公路某一隧道顶部。为控制隧道顶部岩土体变形,确保隧道结构安全及公路的运营安全,需采用施工扰动小,方便施工且能够对滑坡进行永久治理的工程措施。基于此,经多方比选,在工程设计中采用了微型钢管群桩与抗滑桩联合支护的方案,经实践证明,二者联合支护是一种经济有效、工期短、风险小的隧顶滑坡治理技术措施,能够取得良好的支护效果和社会经济效益。The landslide of S203 Shiqian Banqiao to Lenglong highway in Guizhou province is located at the top of a tunnel ofSinan-Jiannan expressway.In order to control the deformation of the rock mass at the top of the tunnel,to ensure the structural safety of the tunnel and the safety operation of the road,it is necessary to adopt engineering measures that are little construction disturbance,convenient to construct and capable of permanent treatment for the landslide.Based on this,the multi-party selection has adopted the joint support scheme of micro steel tube group piles and anti-slide piles in engineering design.It has been proved that the joint support is a kind of economical,effective,and low-risk technical measures with short construction periodfor landslide treatment at the top of the tunnel which can achieve good support effects and social and economic benefits.

关 键 词：公路 滑坡 微型钢管群桩 抗滑桩 

分 类 号：U416.163[交通运输工程—道路与铁道工程]