FWD荷载作用下路面动弯沉响应试验研究

The Experimental Study on the Dynamic Deflection Response of Pavement under FWD Load

以现场试验路段为载体,通过对FWD设备的工作原理和荷载特性的研究,确定了FWD试验的加荷标准及加载方案;根据FWD现场加载试验结果,研究了动荷载作用下沥青路面的动态响应特性,得出沥青路面结构在不同荷载水平下的路表动态弯沉值和动态弯沉变化率的响应规律,为沥青路面设计和现场试验检测提供帮助。

Taking the field test section as the carrier, this paper studied the working principle and loading characteristics of FWD equipment to determine the loading standard and loading scheme of FWD test. According to the FWD field loading test results, it also studied the dynamic response characteristics of asphalt pavement under dynamic load. Then it obtained the response laws of asphalt pavement structure road surface dynamic deflection value and dynamic deflection change rate under the different load levels, which provided the help for asphalt pavement design and field test.