高烈度地震区强膨胀土路堑高边坡设计探讨  

The Design for Strong Expansive Soil High Cutting Slope in High Intensity Earthquake Area

作　　者：封志军[1] 王毅敏 曾锐[1] 薛元[1] 刘漫[1] FENG Zhijun;WANG Yimin;ZENG Rui;XUE Yuan;LIU Man(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《高速铁路技术》2018年第3期28-30,35,共4页High Speed Railway Technology

基　　金：铁道部科技研究开发计划(2010G016-B)

摘　　要：西南山区铁路路基工程由于受高速铁路线性、站场位置等因素控制,不可避免会遇到边坡高度超常规情况。云桂铁路昆明南车站中强膨胀土路堑高边坡近50 m,地质条件较差,岩土力学强度低,又处于高烈度地震区。针对该路堑高边坡,文章研究了桩板墙强支挡结构结合缓边坡、大平台、坡面框架锚杆的综合处理措施确保该高烈度地震区中强膨胀土路堑边坡长期稳定,可为同类工程提供技术参考。For the railway subgrade engineering in southwestern mountainous area,unconventional slope height cannot be avoided because of the controlling factors such as railwayline,station yard sites,etc. The strong expansive soil cut high slope of Kunming south station on Yun Gui railway is about 50 m,which is in high intensity seismic region with poor geological conditions and low soil mechanics intensity. So the combined treatment measures of strong retaining structure of slab-pile wall are combined with slow slope,large platform and slope frame anchor are studied to ensure long-term stability of strong expansive soil cut high slope in high-intensity earthquake zone has-expansion soil. It can provide technical reference for similar projects.

关 键 词：中强膨胀土 路堑高边坡 桩板墙 

分 类 号：U213.5[交通运输工程—道路与铁道工程]