Effect of inclined angle on a vehicle-passenger-inclined highway bridge

Abstract

This paper presents a theoretical analysis of the dynamic interaction of a vehicle-passenger-inclined highway bridge. The mathematical vehicle-passenger model has 12 degrees of freedom: a vehicle model with four masses has six degrees of freedom, and an occupant model with four masses, which is the hinged beam model, has six degrees of freedom. The modal analysis technique using equations of motion are adapted for an inclined highway bridge. By considering both longitudinal and transverse vibrations, the governing differential equations of motion for the bridge are derived. The random roughness of an actual highway surface has been considered in the analysis. During application of the analytical system, the effects of an inclined angle of the highway bridge and speed parameter on vehicle and human dynamic behavior are investigated. The inclined angle is examined in the range of -20° to +20°, and the speed parameter is examined in the range of 0.02-1.5. These factors are found to exert significant influence on the mechanical behavior of vehicles, passenger, and inclined highway bridge. Some results are presented in the form of parametric plots.