车辆随机荷载作用下半刚性路面的动响应分析

Dynamic Response Analysis of Semi Rigid Pavement Under Random Vehicle Loading

路面车辆的多样性和路面的不平整性会使路面行车荷载具有随机性。采用ANSYS建立半刚性路面分析模型,利用MATLAB生成随机行车荷载,研究了不同速度、荷载幅值与方差的随机荷载作用下路面的动响应。研究表明,当行车速度一定时,路面动变形随荷载均值和方差的增加而增大;荷载均值越大,加载过后的路面回弹波动越强;当荷载幅值与方差一定时,行车速度变化对路面的影响较小。

The diversity of pavement vehicles and the unevenness of pavement can make the road traffic load random.A semi rigid pavement analysis model is established by using ANSYS,and random traffic loads are generated by using MATLAB. The dynamic responses of pavement subjected to random loads at different speeds,amplitudes and variances are studied. Research shows that,when the driving speed is constant,the dynamic deformation of pavement increases with the mean and variance of load;the greater the mean load,the stronger the rebound of the pavement after loading;when the load amplitude and variance are constant,the change of driving speed has little influence on the pavement.