摘要
选取汕(头)至湛(江)高速公路路堑高边坡典型工点,首先从路堑高边坡的地形地貌、地层岩性、地质构造、地下水4方面介绍了边坡的工程地质条件,然后结合边坡滑动变形的现场调查情况分析了该路堑高边坡的滑动机理,确定该边坡属于基岩顶面的顺层滑坡。据此提出了竖向钢花管群桩+斜向预应力钢锚管框架梁加固和抗滑桩+锚杆格梁加固2种防治对策,经比选推荐采用竖向钢花管群桩+斜向预应力钢锚管框架梁加固。
Typical sites of high cutting slope in Shantou-Zhanjiang expressway were selected.Firstly,the engineering geological conditions of high cutting slope were introduced from the aspects of topography,stratum lithology,geological structure and groundwater.Secondly,the sliding mechanism of the high cutting slope was analyzed based on the f ield investigation of the slope sliding deformation,and the slope was determined to be a bedding landslide on the top of bedrock.According to this result,two prevention countermeasures were put forward including vertical steel f lower-pipe pile group+oblique prestressed steel anchor pipe frame beam reinforcement and anti-slide pile+anchor lattice beam reinforcement,and the former reinforcement scheme is recommended by comparison.
作者
王佳
袁坤
李新伟
张玉芳
欧阳昇
WANG Jia;YUAN Kun;LI Xinwei;ZHANG Yufang;OUYANG Sheng(Guangdong Transportation Industry Investment Co. Ltd. ,Guangzhou Guangdong 510623,China;Postgraduate Department,China Academy of Railway Sciences,Beijing 100081,China;Guangzhou Expressway Co. Ltd. ,Guangzhou Guangdong 510000,China;Railway Engineering Research Institute,China Academy of Railway Sciences Group Co.Ltd.,Beijing 100081,China)
出处
《铁道建筑》
北大核心
2019年第5期107-111,共5页
Railway Engineering
关键词
高速公路路基
滑动机理
现场监测
路堑高边坡
防治对策
Expressway subgrade
Sliding mechanism
Field monitoring
High cutting slope
Prevention countermeasure
