摘要
路基土石方开挖是影响珠三角城际轨道桥梁项目施工质量及应用效果的关键,针对路基土石方开挖施工技术的困难性,文章介绍了路基土石方开挖施工前期准备工作内容,并以传递系数为基础检测了路基边坡的稳定性,对路基土石方进行了精确计算,研究出三种路基土石方开挖、路堑边坡修整、塌方处理以及井点降水等施工技术。应用结果表明:文中研究的路基土石方开挖施工技术可将路基变形控制在标准范围内,具有较高的稳定性和安全性。
Subgrade earthwork excavation is the key to affect construction quality and the application effect of the Pearl River Delta intercity railway bridge project.The subgrade earthwork excavation construction preparatory work content is introduced in the paper aiming at the difficulty of subgrade earthwork excavation construction technology.The subgrade slope stability is tested on the basis of transfer coefficient.The subgrade earthwork is precisely calculated.Three kinds of subgrade earthwork excavation,cutting slope trimming,collapse treatment,well point dewatering and other construction technology are studied.The application results show that the subgrade earthwork excavation technology studied in the paper can control the subgrade deformation within the reference range with has high stability and safety.
作者
张利华
ZHANG Lihua(China Railway 18 Bureau Group Municipal Engineering Co. , Ltd. , Tianjin 300222, China)
出处
《中国水能及电气化》
2021年第12期8-13,共6页
China Water Power & Electrification
关键词
珠三角城际
轨道桥梁
路基土石方
开挖施工
Pearl River Delta intercity
railway bridge
subgrade earthwork
excavation construction
