摘要
为了更加准确的计算车辆动载系数和路面不平整度,以及准确分析路面动响应和动荷载的关系。文中根据沥青路面不同平整度条件,利用MATLAB数学计算软件,通过建立七自由度四轴重载车辆的1/2模型,来计算沥青路面不同平整度的标准差和波形参数之间的关系,同时利用该模型还可以准确地分析出动载系数是如何受到波长、车速、振幅以及轴载影响的。研究结果表明,随着波长的增加,动载系数最大值为1.45;动载系数与振幅和载重、动载之间的关系分别是正相关、负相关和正相关。振幅越大,动载系数随车速的提高增长速度也越快。
In order to calculate the vehicle dynamic load coefficient and road roughness more accurately,as well as analyze accurately the relationship between road dynamic response and dynamic load.Based on the different smoothness of asphalt pavement conditions,this paper sets up half of the four axle load carrying seven degrees of freedom vehicle model using mathematical software MATLAB,to study the relationship between the standard deviation of different smoothness of asphalt pavement and the waveform parameters.At the same time,the model can also be used to analyze accurately how the dynamic load coefficient is affected by wavelength,the effects of speed,amplitude and axial load.The results show that the maximum dynamic load coefficient is 1.45 with the increase of wavelength.The relation of dynamic load coefficient with amplitude,load and dynamic load is positive correlation,negative correlation and positive correlation respectively.The larger the amplitude is the faster the dynamic load coefficient increases with the increase of vehicle speed.
作者
冯天时
王思涵
高畅
孙吉书
FENG Tianshi;WANG Sihan;GAO Chang;SUN Jishu(School of Civil and Transportation,Hebei University of Technology,Tianjin 300401,China)
出处
《低温建筑技术》
2021年第4期111-113,127,共4页
Low Temperature Architecture Technology
基金
天津市交通运输科技发展计划(2017B-32)
河北工业大学大学生创新创业训练计划(202010080021)。
