Flutter performance and improvement for a suspension bridge with central-slotted box girder during erection

Aerodynamic instabilities of super long-span bridges have always been the essential issue in design and construction, especially during the deck erection process. Based on the Xihoumen Bridge, this paper presents a particular insight into the flutter performance of a mega-bridge with a central-slotted box girder while in construction. Numerical analyses and full-model wind tunnel tests are conducted to explore the evolution of dynamic properties and flutter limits as erection proceeds. It is shown that favorable effects on aeroelastic stability are guaranteed following a symmetric deck erection sequence, but appropriate improvements are still required to ensure the safety of the structure under construction. The efficacy of different improvement methods, both structural and aerodynamic, are systematically examined, among which individual and conjoint applications of storm ropes are elaborated. The results indicate that single storm rope outperforms the combined application. In particular, one with 10% of the cross-section area of the main cable anchored at 1/8 of the midspan is especially effectual in improving the aerodynamic stability during erection.

• Record URL:
  • https://doi.org/10.1016/j.jweia.2018.05.016
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0167610517309789
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01676105
• Supplemental Notes:
  • © 2018 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Yang, Yongxin
  • Zhang, Lei
  • Ding, Quanshun
  • Ge, Yaojun
• Publication Date: 2018-8

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: pp 118-124
• Serial:
  • Journal of Wind Engineering & Industrial Aerodynamics
  • Volume: 179
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0167-6105
  • Serial URL: https://www.sciencedirect.com/journal/journal-of-wind-engineering-and-industrial-aerodynamics

Subject/Index Terms

• TRT Terms: Box girder bridges; Bridge construction; Flutter (Aeronautics); Suspension bridges
• Geographic Terms: Zhejian Province (China)
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 01699922
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 29 2019 9:57AM