基于公路工程技术标准的载重货车动荷载系数研究

Research on Dynamic Load Coefficient of Loaded Truck Based on Highway Engineering Technique Standard

为研究载重货车前、后轮的动荷载系数,建立五自由度车辆振动模型,采用傅里叶变换推导动荷载系数计算公式,以公路工程技术标准作为路面不平整度的标准,计算典型载重货车前后轮动荷载系数。研究结果表明,在满足公路工程技术标准要求的公路上行驶的载重货车动荷载系数在10%左右,而且前轮动荷载系数高于后轮动荷载系数。

In order to study the dynamic load coefficient of the front and rear tires of the loaded truck,a truck vibration model with the five-degree freedom is established and Fourier transform method is employed to obtain the formula of the dynamic load coefficient to calculate the dynamic load coefficient of the front and rear tires of the typical loaded truck by using highway engineering technique standard as the standard of the pavement roughness. Research results show that the dynamic load coefficient of the loaded truck traveling on the highway which meets the requirements of highway engineering technique standard is about 10% and the dynamic load coefficient of the front tire is higher than that of the rear tire.