Study of Impact Coefficients of Coupled Vibration System of Continuous Girder Bridge and Moving Vehicles

In this paper, the dynamic behavior of the continuous girder bridge under vibration load from moving vehicles is calculated by way of simplifying the continuous girder bridge as plane girder model and by using modal analysis method. The influences of vehicle vibration system on impact coefficients of deflection and bending moment of the continuous girder bridge under condition of varied span length and speed of moving vehicles are studied. The studies herewith rather truly reveal the dynamic behavior and deformation of the continuous girder bridge structure under vehicle load.