The main research findings are summarized as follows,A quarter-vehicle vibration model with two degrees of freedom and four vehicle parameters was built and the pavement surface roughness (PSR) was taken as the excitation in this model.

• 采用四分之一车辆振动模型，以路面不平整为激励，运用随机过程理论分析了车辆随机动荷载，探讨了车辆动荷载、动载系数及其峰值的概率分布以及车速、路面状况、车辆参数等对动载系数的影响。