深厚软土区低路堤软基处理设计  

Soft Subgrade Treatment Design of Low Embankment in Deep Soft Soil Area

作　　者：何长明 HE Changming(Guangzhou Municipal Engineering Design&Research Institute,Guangzhou 510060,China)

机构地区：[1]广州市市政工程设计研究总院,广州510060

出　　处：《路基工程》2018年第5期202-207,共6页Subgrade Engineering

摘　　要：针对横琴地区最大深度逾40 m的深厚软基,根据低填土路堤的特点,结合工程地质、岩土层特点,对路基的填土高度、软基处理深度、验收标准进行分析,分别对一般路段、既有路基衔接路段、结构物衔接路段、净空受限路段等,提出真空联合堆载预压、双向水泥搅拌桩、长短桩复合地基和高压旋喷桩综合处理方案。工程验证,软基处理效果明显。This paper introduces the deep soft foundation with the largest depth of more than 40 m in Hengqin area.According to the characteristics of low embankment,combined with the engineering geological characteristics of rock and soil,the subgrade filling height,soft foundation treatment depth and acceptance criteria were analyzed;For the general section,both cohesion and structure cohesion road subgrade sections,clearance of limited road,the treatment schemes of vacuum preloading,the bidirectional cement mixing pile,the long-short pile composite foundation and high pressure jet grouting pile were proposed.It provides reference for the design and construction of similar soft foundation treatment projects.

关 键 词：深厚软土区 低路堤 软基处理 真空预压 双向水泥搅拌桩 长短桩复合地基 

分 类 号：U416.166[交通运输工程—道路与铁道工程]