Aerodynamic Characteristics of Two Edge Girders with inclined Lower Flange for Cable-Stayed Bridges

Abstract

This paper describes the aerodynamic effect of the inclined lower flanges of two-edge girders, which have economical and structural advantages for future long span cable stayed bridges. The characteristics of the flutter instability of two edge girders, based upon a series of wind tunnel tests, are discussed. Then, it was clarified that the lower geometrical shapes of two-edge girders play an important role on characterizing the aerodynamic stabilization of two edge girders.