高速公路湿陷性黄土路基的压实技术  

Compaction Technology for Collapsible Loess Subgrade of Expressway

作　　者：杨雪茹[1,2] 毕胜强[2] 

机构地区：[1]长安大学材料科学与工程学院,陕西西安710064 [2]江苏省交通技师学院汽车系,江苏镇江212006

出　　处：《筑路机械与施工机械化》2011年第7期47-49,共3页Road Machinery & Construction Mechanization

摘　　要：针对黄土路基的工后沉降和黄土边坡的长时间稳定等问题,结合工程实际,采用室内试验的方法分析了湿陷性黄土空隙比与沉降量随压力的变化,提出采用冲击压实技术对路基进行压实。研究结果表明:采用冲击压实技术能减小路基的土体空隙比,使路基达到稳定,对促进湿陷性黄土的沉降效果是明显的。Aimed at the problems of post-construction settlement of loess subgrade and the long-term stability of loess side slope,indoor tests were conducted to study the changes of void ratio and settlement of collapsible loess when the pressure changed,and the impact compaction technology was presented to stabilize the subgrade. The results show that impact compaction technology can reduce the void ratio of soil to stabilize the subgrade, and effectively promote the settlement of collapsible loess.

关 键 词：道路工程 湿陷性黄土 空隙比 冲击式压路机 

分 类 号：U416.1[交通运输工程—道路与铁道工程]