EXTENDED EVALUATION OF CBG (CURVED BOX GIRDER) AND WCBG (WIDE CURVED BOX GIRDER) COMPUTER PROGRAMS. FINAL REPORT

An extended evaluation of CBG and WCBG computer programs was conducted to study the inaccuracies of the CBG program as span/width ratios of curved rectangular box girders decreased. A total of 20 bridges were analyzed in this phase. The effects of abutment skew angle and degree of curve on important structural parameters was studied using the WCBG program. A total of 35 bridges were analyzed, for this portion. Results for the most part are presented in dimensionless ratios and indicate that analysis methods based on a unit beam concept are quite accurate for span/width ratios above two and degrees of curve below thirty. Results of the skew and curvature studies indicate that both cause significant changes in most structural parameters and dramatic changes in shear force and abutment reactions when compared with a straight bridge of the same span. This information should be of value to designers in comparing particular bridges with results contained herein.

• Corporate Authors:

  Mississippi State University, Mississippi State

  Department of Civil and Environmental Engineering
  Mississippi State, MS  United States  39762-9546

  Mississippi State Highway Department

  P.O. Box 1850
  Jackson, MI  United States  39215

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Denson, K H
• Publication Date: 1988-10

Media Info

• Features: Figures; References; Tables;
• Pagination: 140 p.

Subject/Index Terms

• TRT Terms: Box girders; Bridge abutments; Computer programs; Curvature; Curved bridges; Girder bridges; Skewed structures
• Uncontrolled Terms: Curved box girders; Horizontal curvature; Skew angle
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00483838
• Record Type: Publication
• Report/Paper Numbers: MSHD-RD-88-94, MSSU-EIRS-CE-89-1
• Files: TRIS, USDOT, STATEDOT
• Created Date: May 31 1989 12:00AM