摘要
斜坡软弱地基的填方路基不同于平原地区的软土地基,对比了两种软弱地基路基的变形特征,分析了常用软土地基的处理措施,结合具体条件分析了各种措施的适用宜性。推荐了采用水泥土搅拌桩进行地基加固处理,主要解决沉降和稳定问题,通过设置人工挖孔方形侧向约束桩以解决路基整体稳定性问题。提出了现浇和预制两种软土地基人工挖孔桩护壁的施工方法。
The filling roadbed of slope soft foundation is different from that of plain area.The deformation characteristics of two kinds of soft foundation roadbed are compared,the common treatment measures of soft foundation are analyzed,and the applicability of various measures is analyzed in combination with specific conditions.It is recommended that cement-soil mixing pile be used to reinforce the foundation,which mainly solves the settlement and stability problems.The overall stability of the roadbed can be solved by setting square lateral restraint piles with manual holes.The construction methods of cast-in-situ and prefabricated manual digging pile retaining wall in soft soil foundation are put forward.
作者
李忠玉
LI Zhongyu(China Railway 19th Bureau Group Co.,Ltd.,Beijing 100176,China)
出处
《施工技术》
CAS
2019年第S01期156-159,共4页
Construction Technology
关键词
斜坡软土
路基
加固
侧向约束
挖孔桩
slope soft soil
subgrade
reinforcement
lateral restraint
dug pile
