应用便携式落锤弯沉仪测定路基回弹模量  

Subgrade resilience modulus measuring by portable falling weight deflectometer(PFWD)

作　　者：段丹军[1] 查旭东[1] 张起森[1] 

机构地区：[1]长沙理工大学公路工程学院,湖南长沙410076

出　　处：《交通运输工程学报》2004年第4期10-12,共3页Journal of Traffic and Transportation Engineering

基　　金：国家自然科学基金项目(50208004);国家西部交通建设科技项目(200131882594)

摘　　要：应用便携式落锤弯沉仪(PFWD),研究了动弹性模量与压实度和含水量的关系,得出动弹性模量与静弹性模量、压实度和含水量相关系数大于0 85,动弹性模量最大值在最佳含水量附近,这与实际情况相符。结果表明,PFWD可用于路基回弹模量的快速检测和评价。This paper studied the relationships of dynamic elastic modulus with compaction, and moisture content with PFWD. It was pointed that the obtained satisfactory correlations of dynamic elastic modulus with static elastic modulus, compaction with moisture content are over 0.85, the maximum value of dynamic elastic modulus is near by the optimum moisture content, which is agreetment with the real situation. The result shows it is feasible to measure and evaluate subgrade resilience modulus with PFWD. 1 tab, 3 figs, 7 refs.

关 键 词：路基工程 回弹模量 便携式落锤弯沉仪 压实度 含水量 

分 类 号：U416.03[交通运输工程—道路与铁道工程]