Wind-Induced Damages to a Three-Span, Continuous, Concrete Arch Bridge under Construction

The second Yibin bridge is a three-span, continuous, reinforced concrete arch bridge with equal span lengths of 160 m. After two reinforced concrete (RC) ribs were constructed through all three spans, during the night of June 7, 1997, the central span and the side span near Zigong city were found to have collapsed into the river on its own. The remaining side span near Yibin city collapsed later on its own, on August 29, 1997. The aeroelastic and aerodynamic investigations, including definition of design wind speed, determination of aeroelastic and aerodynamic wind loading, testing of wind-induced vibrations, evaluation of RC arch rib strength, were conducted to identify the reason for the collapse. It was finally concluded that aerodynamic instability, flutter or galloping, should be excluded in these two accidents, and the direct reason was the ultimate resistance of the cross-sections at the arch bases being less than the total load response under the joint action of structural dead loads and wind-induced loads including aerodynamic wind loading, aeroelastic wind loading and the loading based on P-? effects which were not considered in the design of the bridge under construction. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10168664
• Authors:
  • Ge, Y J
  • YANG, Y X
  • PANG, J B
  • XIANG, H F
• Publication Date: 2007-5

Language

• English

Media Info

• Pagination: 141-150
• Serial:
  • STRUCTURAL ENGINEERING INTERNATIONAL
  • Volume: 17
  • Issue Number: 2
  • Publisher: International Association for Bridge and Structural Engineering
  • ISSN: 1016-8664

Subject/Index Terms

• TRT Terms: Aerodynamics; Arch bridges; Bridges; Design; Loss and damage; Reinforced concrete; Stability (Mechanics); Strength of materials; Wind
• Geographic Terms: China
• ITRD Terms: 5492: Aerodynamics; 3427: Arch bridge; 3455: Bridge; 8023: China; 1614: Damage; 9011: Design (overall design); 4794: Reinforced concrete; 5930: Stability; 2554: Wind
• Subject Areas: Bridges and other structures; Construction; Design; I24: Design of Bridges and Retaining Walls; I50: Construction and Supervision of Construction; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01060907
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Sep 10 2007 1:28PM