Author(s)

Hui Fan

Corresponding Author

Hui Fan

ABSTRACT

In this paper, the impact coefficient of small and medium span girder Bridges under different spans and vehicle speeds is studied with typical simple supported hollow slab girder Bridges. A multi-span bridge model is established in ANSYS by using numerical simulation method, and the actual load is simulated by combining space three-axis vehicle model. The influence of pavement grade, vehicle type and its parameters on the impact coefficient is studied and analyzed. It is found that the higher the pavement grade, the smaller the span or the higher the speed, the more significant the impact coefficient is affected by pavement. In addition, heavy vehicles have the greatest impact on the impact coefficient. Compared with the standard, the calculated results of the method in this paper are small, which indicates that the shock coefficient in the standard is too safe.

KEYWORDS

simply supported hollow slab girder bridge, vehicle-bridge coupling, impact coefficient