路基动态模量现场快速检测技术特点分析

Characteristic Analysis of Field Fast Detecting Technique for Dynamic Modulus of Roadbed

路基动态模量主要可以通过两种方法获得:一是室内试验,二是现场检测。针对目前路基动态模量现场快速检测技术的现状,对FWD测试法、DCP测试法、PFWD测试法三种现场快速检测方法的工作原理、测试范围和技术特点进行了全面分析。结果显示:FWD测试法快捷、适用范围广,能很好地掌握各种路面结构和物料填充情况,但还存在一些问题需要解决;DCP测试法简单、可靠、快捷、费用低,在我国还处于初级应用阶段;PFWD测试法轻便快速。

The dynamic modulus of roadbed can be obtained mainly by two methods of laboratory test and field detection. Aiming at the current situation of the field fast detecting technique for the dynamic modulus of roadbed, this paper completely analyzes the working principles, detecting ranges and technical characteristics of three field fast detecting methods of FWD detecting method, DCP detecting method and PFWD detecting method. The results show that the FWD detecting method is fast and widely applicable, and can better master the conditions of every pavement structure and material filling, but there are still some problems to be solved.The DCP detecting method is simple and reliable with low cost, and is still in its primary applications in China. The PFWD detecting method is portable and quick.