水泥粉煤灰搅拌桩加固饱和黄土地基现场试验研究  

Filed Experimental Study of Fly-ash Cement Mixing Pile Treating the Saturated Loess Foundation

作　　者：鞠兴华[1] 邱志军 李廷斌[3] 

机构地区：[1]陕西铁路工程职业技术学院,渭南714000 [2]中交隧道局二公司,西安710064 [3]西安市政设计研究院有限公司,西安710068

出　　处：《价值工程》2012年第17期6-7,共2页Value Engineering

基　　金：陕西铁路工程职业技术学院项目;饱和黄土地基处理技术研究(2011-23);交通部西部交通建设科研项目:2009310000003

摘　　要：随着高速公路建设的飞速发展,在完善原有地基处理技术的同时,新的地基处理方法也不断涌现出来。本文以渭蒲高速公路饱和黄土地基处理课题为背景展开工作,针对该路段饱和黄土的工程性质,提出了用水泥粉煤灰搅拌桩处理饱和黄土,并选择地质条件和填筑高度都有代表性的地段进行现场试验。成桩后,采用浅部开挖桩头、现场抽芯无侧限抗压强度试验、轻型动力触探(N10)三种方法对地基处理效果进行检测,通过分析检测结果进一步优化依托工程地基处理方案的各项工艺参数,用以指导大规模地基处理施工的开展。With the rapid development of highway construction,the original foundation treatment technology is continuously improved;at the same time,the new foundation treatment methods are also constantly emerged.Based on the saturated loess foundation treatment of Weinan-Pucheng highway,this paper puts forward the fly-ash cement mixing pile treating the saturated loess foundation according to the engineering features of saturated loess,and makes the filed test on typical geological conditions and filling height.After piling,the three method of excavation of shallow part of pile,experiment of unconfined compressive strength through core-pulling,and light dynamic penetration test（N10） was used to test the foundation treatment.According to test results for,the parameters of all kinds of technologies are optimized based on construction foundation treatment,for guiding to the foundation treatment.

关 键 词：饱和黄土 水泥粉煤灰搅拌桩 现场试验 单桩承载力 

分 类 号：TU433[建筑科学—岩土工程]