长短桩复合地基在高速公路软基处理中的应用  

The application of long-short piles composite foundation in highway soft foundation treatment

作　　者：孙加永 

机构地区：[1]中铁电气化局西铁工程公司,陕西西安710032

出　　处：《西安工程大学学报》2011年第2期228-231,共4页Journal of Xi’an Polytechnic University

基　　金：陕西省自然科学基金资助项目(2007E204)

摘　　要：为了研究长短桩复合地基在湖区软土地基处理中的适用性,针对湖区某高速公路软土地基采用的长短桩复合地基进行了现场试验测试研究,并与多组短桩、长桩及多桩复合地基的现场静载荷试验和对路基沉降量监测的结果进行对比.结果表明,单桩复合地基的极限承载力约为240kPa,大于设计值的127kPa;路基工后最大沉降量约1.31cm,说明处治效果良好,用长短桩复合地基处理湖区软土地基是可行的.In order to study the application of long-short piles composite foundation in lakes soft ground treatment,highway soft foundation treatment in lake areas is tested by long-short-pile composite foundation.A series of static loading tests of long-shortpile composite foundation on single pile have done,and the monitoring results of subgrade settlement were analyzed.The results show that ultimate bearing capacity of a pile composite foundation is about 240kPa,which is bigger than design value 127kPa.The settlement after construction is only 1.31cm,so the long-short pile treatment technical for lake soft ground is reasonable and reliable.

关 键 词：路基工程 复合地基 原位测试 软土地基 

分 类 号：U416.169[交通运输工程—道路与铁道工程]