强夯法处理辽西湿陷性黄土路基的效果分析  

Effect analysis of dynamic ramming for collapsible leoss roadbed in west of Liaoning

作　　者：邢玉东[1] 王常明[2] 张立新[3] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]吉林大学建设工程学院,吉林长春130026 [3]辽宁省交通勘测设计院,辽宁沈阳110005

出　　处：《辽宁工程技术大学学报（自然科学版）》2008年第3期371-373,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：辽宁省交通科研基金资助项目(200606)

摘　　要：为了确定强夯法处理辽西湿陷性黄土路基的技术参数，采用现场测试和室内试验相结合的方法，分析并对比了试验路段在强夯前后的黄土物理力学性质的变化。结果表明：夯击能为800～1600kN·m、夯击数不小于8击，对处理深度4～6m的湿陷性黄土较为有效，不仅可消除湿陷性，并可较大幅度降低压缩性。该成果已应用于阜新一朝阳高速公路湿陷性黄土路基处理工程中。To determine the technical parameters of dynamic ramming method for stabilizing collapsible loess in the west of Liaoning by field compaction tests, which is the first time listed in the code for building construction in collapsible loess regions, the physical and mechanical characters in experiment area are analyzed and compared before and after treatment on the basis of field observation and test in laboratory. Results show that it is effective to treat 4m to 6m in depth under 800kN.m to 1600kN.m in compaction energy with no less than 8 tamper times. After compacted, collapsibility of loess is eliminated and its compressibility is decreased largely. The results have been applied in loess raodbed treatment of highway from Fuxin to Chaoyang.

关 键 词：湿陷性黄土 强夯法 效果分析 

分 类 号：TU443[建筑科学—岩土工程]