路桥过渡段车辆动荷载分析

Vehicle dynamic loading analysis on the road-bridge transition section

分析了车辆动荷载对路桥过渡段的危害,采用路桥过渡段路面不平整时域模型,以五自由度车辆振动模型为基础,从人车路相互作用角度计算了不同车速不同沉降区段长度下车辆的动荷载,分析发现随着车速的增加,前后轮最大附加动荷载都增加,从而完善路桥过渡段的路面结构设计。

It analyzes damages of the vehicle dynamic loading on the road-bridge transition section,adopts pavement unevenness time-domain model of the road-bridge transition section,taking the 5-dof vehicle vibration model as basement,and calculates the dynamic loading of the vehicle with different speeds and different settlement area length from aspect of interaction effect between people and vehicle.Analysis finds out that as increasing of the vehicle speed,the maximum adding dynamic loading of the front and real wheels is increasing, thus perfecting pavement structure design of the road-bridge transition section.