Tension field action behavior in the hybrid steel girders for Ohio approach spans of Blennerhassett Island Bridge

The proposed Blennerhassett Island Bridge crosses the Ohio River and Blennerhassett Island connecting Wood County, West Virginia to Washington County, Ohio. The hybrid steel girders for the Ohio approach spans have span length of 52.1 m, 54.7 m and 42.6 m. One of the limitations presented in the AASHTO (1998) LRFD Bridge Design Specifications, with 2003 interims, is that when considering shear design for hybrid sections, there is no allowance for tension field action. The shear design of girders using these specifications required in excess of 120 transverse stiffeners/girder. The use of the tension field action for designing hybrid girders, which is allowed in the AASHTO (2004) LRFD Bridge Design Specifications, reduced the number of transverse stiffeners required to 36/girder. This reduction in stiffeners reduced the cost by approximately 10% for each girder. In this paper, the stresses in the web and transverse stiffeners for the 2 designs are presented. Because there is a significant difference in the transverse stiffener requirements under each design, the authors take a closer look at the tension field action anticipated. The tension field action involves the effects of out-of-plane forces on the transverse stiffeners due to the shear post-buckling response of the web panels. Therefore, a 3-D finite element model was used considering material and geometric non-linearity. The analysis demonstrated that the anticipated tension field did form as assumed in the design.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/15732487
• Authors:
  • Ahmad, Faheem
  • Zoubi, Nasser
• Publication Date: 2005-9

Language

• English

Media Info

• Media Type: Print
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: pp 211-221
• Serial:
  • Bridge Structures - Assessment, Design & Construction
  • Volume: 1
  • Issue Number: 3
  • Publisher: IOS Press
  • ISSN: 1573-2487
  • EISSN: 1744-8999
  • Serial URL: https://content.iospress.com/journals/bridge-structures

Subject/Index Terms

• TRT Terms: Bridge design; Composite construction; Finite element method; Girder bridges; Metal bridges; Shear properties; Shear strain; Tension; Transverse stiffeners
• Identifier Terms: AASHTO LRFD Bridge Design Specifications
• Uncontrolled Terms: Postbuckling
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01035903
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 27 2006 8:08AM