关键词: 汽车荷载, 桥梁振动

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