Impact Factors for Curved Continuous Composite Multiple-Box Girder Bridges

The results from a parametric study on the impact factors for 180 curved continuous composite multiple-box girder bridges are presented. Expressions for the impact factors for tangential flexural stresses, deflection, shear forces and reactions are deduced for American Association of State Highway and Transportation Officials (AASHTO) truck loading. The finite-element method was utilized to model the bridges as three-dimensional structures. The vehicle axle used in the analysis was simulated as a pair of concentrated forces moving along the concrete deck in a circumferential path with a constant speed. The effects of bridge configurations, loading positions, and vehicle speed on the impact factors were examined. Bridge configurations included span length, span-to-radius of curvature ratio, number of lanes, and number of boxes. The effect of the mass of the vehicle on the dynamic response of the bridges is also investigated. The data generated from the parametric study and the deduced expressions for the impact factors would enable bridge engineers to design curved continuous composite multiple-box girder bridges more reliably and economically.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/32947845
• Authors:
  • Samaan, Magdy
  • Kennedy, John B
  • Sennah, Khaled
• Publication Date: 2007-1

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 80-88
• Serial:
  • Journal of Bridge Engineering
  • Volume: 12
  • Issue Number: 1
  • Publisher: American Society of Civil Engineers
  • ISSN: 1084-0702
  • Serial URL: http://ojps.aip.org/beo

Subject/Index Terms

• TRT Terms: Axles; Bending stress; Bridges; Continuous girder bridges; Curvature; Deflection; Finite element method; Parametric analysis
• Identifier Terms: American Association of State Highway and Transportation Officials
• Uncontrolled Terms: Bridge configuration; Bridge spans; Shear forces; Three-dimensional structures
• Subject Areas: Bridges and other structures; Data and Information Technology; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01042850
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 1 2007 11:00AM