摘要
为了研究落锤式弯沉仪(FWD)与贝克曼梁在各级公路上弯沉检测的相关性,选取三种不同结构层组成的公路试验段进行落锤式弯沉仪与贝克曼梁检测,并对三种路面在不同检测方式下弯沉数据特点及数据相关性进行分析。结果显示:不同等级公路路面在两种弯沉检测方式下回归分析的相关性差别较大;落锤式弯沉仪较贝克曼梁法具有更高的稳定性与准确度,且落锤式弯沉仪进行高等级公路弯沉检测时稳定性更佳;非沥青面层的低等级路面结构在两种弯沉检测方式下回归分析的相关性较差。
In order to study the effectiveness of the deflection detection of falling hammer type deflectometer(FWD)on all levels of highways,the highway test segment consisting of 3 different structural layers is selected to carry out the drop hammer bender and Beckman beam detection,and the characteristics of deflection data and the correlation between the two deflection detection data of three pavement under different detection methods are analyzed.The results show that the correlation of regression analysis varies greatly under two kinds of deflection detection methods of different grade road surface.It shows that the drop hammer deflectometer is better than Beckman beam method has higher stability and accuracy,and the stability of drop instrument has better stability in the high-grade highway deflection test,but the correlation of regression analysis is poor under the two methods of deflection detection of low-grade pavement structure without asphalt surface.
作者
梁志成
LIANG Zhicheng(Shanxi Traffic New Technology Development Co.,Ltd.,Shanxi Taiyuan 030032 China)
关键词
道路工程
FWD
贝克曼梁
弯沉
有效性
road engineering
FWD
Beckman beam
deflection
effectiveness
