Abstract: On the basis of structural dynamics,the paper analyses the continuous-beam bridge dyramic behavior under moving vehicles.By simutating with computer,the paper also discusses how the bridge dynamic behavior change with different velocities,types,loads of vehicles.And with the calculation,the prime factors about bridge dynamic behavior are brought out.

Key words: moving vehicles, bridge vibration

摘要： 以结构动力学为基础,分析了连续梁桥结构在汽车荷载作用下的动态性能.并运用计算机模拟,讨论了不同车速、车型、载重情况下桥梁动态响应的变化,以此分析出影响结构动态性能的主要因素.

关键词: 汽车荷载, 桥梁振动