Experimental Studies on Free Vibrations of a long spanned Suspension Bridge

Abstract

This paper presents the experimental results for static and dynamic characteristics of a suspension bridge with inclined hanger system comparing those with ordinary vertical hanger system by use of three spans suspension bridge model (3, 250+6, 500+3, 250). The discrepancy due to the inclination of hangers is studied by the model test on the natural frequencies, the frequency responses and the damping-amplitude relations for the above cases. The results indicate that the inclination of hanger system may increase the deflectional stiffness when the load acts asymmetrically and dynamically the damping effect in the free vibrations.