Aerodynamic instability performance of twin box girders for long-span bridges
Yongxin Yang, Rui Zhou, Yaojun Ge, Damith Mohotti, Priyan Mendis
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS | ELSEVIER | Published : 2015
Twin box girders are a popular choice among long-span bridge engineers, and the aerodynamic performance of such a system is critical to the stability of a bridge under wind excitation. Two groups of twin-box girders with six representative slot width ratios varying from 0% to 100% were utilised to investigate the influence of different wind fairing shapes on aerodynamic instability performance for both torsional divergence and flutter of the girders. The girders with two wind fairing shapes for various slot ratios were investigated by wind tunnel tests and theoretical analyses. Based on the experimental results of static wind loads and critical flutter wind velocities, the symmetry of wind f..View full abstract
Awarded by National Science Foundations of China
Awarded by Ministry of Transportation
Awarded by Ministry of Science and Technology
The authors gratefully acknowledge the support for the research work jointly provided by the National Science Foundations of China (Nos. 51078276 and 91215302), the Ministry of Transportation (Grant no. KLWRBMT-04), and the Ministry of Science and Technology (Grant no. SLDRCE 10-B-05).