Full Model Wind Tunnel Study on the Xia-Zhang Bridge Under Operation Stage | Science Publications

American Journal of Engineering and Applied Sciences

Zhang L. Liang¹  Ayad T. Saeed¹  Oday A. Salih¹  Feras A. Zoubi¹  Yang Z. Yun¹ 

关键词: Xia-Zhang Bridge;    aeroelastic model;    wind tunnel test;   

DOI  :  10.3844/ajeassp.2010.390.395

学科分类：工程和技术（综合）

来源: Science Publications

【 摘 要 】

Problem statement: Long-span cable-stayed bridges under service and particular construction conditions are very susceptible to wind action due to their great flexibility, so the aerodynamic stability is becoming a major concern in the design and construction phrases. Cable-stayed bridges may exhibit wind-induced vibration phenomena such as flutter, buffeting and vortex oscillation under wind excitation. The study concentrated on the issues concerning the aerodynamic response of Xia-Zhang cable-stayed Bridge to make it safe and stable under wind action. Although there have been accumulating experience in the building of cable-stayed bridges and research on wind-resistant stability in Chinese Mainland, most of the research focuses on inland cable-stayed bridges or littoral ones of mid-length, but not on littoral ones whose main span is over 600 m. Therefore, wind-resistant performance research of north branch bridge of Xia-Zhang cross-sea Bridges is very necessary and important for its wind-resistant stability, safety and applicability in the operation condition. Approach: This study mainly presented the wind tunnel test program of the Xia-Zhang Bridge aeroelastic full model, including test method, test contents, test results and so on. Results: The test results contained Root Mean Square (RMS) of accelerations and displacements as well as average values of displacements. Conclusion: The conclusions were as follows: (a) In the uniform flow field, under the condition of entire bridge without rail may vibration divergence occur when α = 3

【 授权许可】

Unknown