Analysis of Influencing Factors on Aerostatic Stability of Long Span Asymmetric Suspension Bridge

Abstract

The long span asymmetric suspension bridge is widely constructed in the mountainous terrain. Due to the difference of the structural characteristics, the aerostatic stability of the asymmetric suspension bridge is different from that of the symmetrical structure. In this paper, the effect of the initial wind attack angle, the mean aerodynamic force coefficient, the main cable and the boom wind load, the height difference of the bridge tower support point on the aerostatic stability of the asymmetric suspension bridge are analyzed by incremental internal and external iteration method. The influence degree and mechanism of the above factors on the aerostatic stability of structures are obtained.KEYWORD：Suspension Bridge, aerostatic stability, Parameter Study