Abstract: The damage of cement concrete pavement will be accelerated due to the overload of vehicles. In order to analyze the influence of pavement damage on the dynamic load of heavy-load vehicles, taking Foton Omar S5 two-axle vehicle as the research object,the dynamic load effect of damaged cement pavement on heavy-load vehicles under the joint action of different pit road damage conditions, different loads and different speeds was analyzed by use of ADAMS software, which was based on the “1+2” four-degree-of-freedom vehicle vibration model. The research shows that: under the same pit depth,with the increase of vehicle speed, the dynamic load of the vehicle increases, and the maximum dynamic load is 1.93 times of the static load. Under the same pit depth,with the increase of load, the vehicle dynamic load increases and the dynamic load coefficient decreases.When the pit depth is within 50~60 mm, the maximum dynamic load of the vehicle is 1.49 times of the static load. Relative to wheels, the damage degree of the pit road surface has a serious interference on the ride comfort of heavy-load vehicles.

Key words: road engineering, pit cement pavement;dynamic load coefficient;heavy-load two-axle vehicle;ADAMS/Car

摘要： 水泥混凝土路面在使用过程中因车辆过载作用会加速破损，为分析路面破损状况对重载车辆动荷载变化，以福田欧马S5双轴车为研究对象，基于“1+2型”四自由度车辆振动模型，借助ADAMS软件对在不同凹坑路面破损状况、不同载重、不同车速的共同作用下，分析了破损水泥路面对重载车辆的动荷载影响。研究表明：在同一凹坑深度下，随着车速提高，车辆动荷载增大，其最大动荷载是静载的1.93倍；随着载重增加，同一深度下车辆动荷载增大，动荷载系数减小，凹坑深度在50~60 mm范围内，车辆最大动荷载是静载的1.49倍，此刻对于车轮，凹坑路面的破损程度对重载车辆的行驶平顺性产生了严重干扰。

关键词: 道路工程, 凹坑水泥路面, 动荷载系数, 重载双轴车, ADAMS/Car