无砂砼小桩后处理高填方软基的固结过程分析  

Consolidation analysis of soft foundation post-processingwith small non-sand concrete pile for highway thick filling area

作　　者：童怀峰[1] 郭院成[1] 张浩华 

机构地区：[1]郑州大学土木工程学院,河南郑州450002 [2]郑州市市政工程管理处,河南郑州450052

出　　处：《河南科学》2005年第1期66-69,共4页Henan Science

基　　金：河南省科技攻关项目(0424450011)资助

摘　　要：无砂砼小桩复合地基技术的施工过程主要包括成孔填石和压力注浆,高填方软基施工过程产生较大的超静水压力,延缓路基稳定时间,采用后处理的关键技术在于快速消散超孔隙水压力和水泥复合土固结。本文在分析无砂砼小桩成桩、注浆过程的基础上,根据渗流理论对无砂砼小桩后处理高填方软基的固结进程进行了分析。The construction procedure of composite ground with small non-sand concrete pile include drilling and filling with stone and pressure grouting, in the course of construction on soft foundation for thick filling area, the excess pore water pressure comes into being, which delay the stability of roadbed, the key technology of post-processing lie in the dissipation of excess pore water pressure and consolidation of cement soil rapidly. This paper analyzed the drilling and grouting of small non-sand concrete pile; According to the seepage theory, the consolidation analysis of weak soil post-processing with small non-sand concrete pile for highway thick filling area is completed.

关 键 词：复合地基 无砂砼小桩 压力注浆 固结 

分 类 号：TU471.7[建筑科学—结构工程]