Title:
Design of Variable Depth Single-Span Post-Tensioned Concrete Bridges
Author(s):
Kenneth W. Shushkewich
Publication:
Concrete International
Volume:
42
Issue:
10
Appears on pages(s):
29-37
Keywords:
aesthetics, integral abutment, long span, rigid frame
DOI:
10.14359/51728200
Date:
10/1/2020
Abstract:
Haunched single-span bridges (HSSBs) are used where an aesthetically pleasing graceful shape is desired and/or the vertical clearance needs to be maximized. After a brief introduction into simple-span bridges with short cantilever extensions, the article provides a complete design example for a post-tensioned concrete box girder HSSB. The design example is presented as a simple six-step procedure. These bridges are relatively easy to design, even for novice bridge designers.
Related References:
1. Corven, J., “Post-Tensioned Box Girder Design Manual,” FHWA-HIF-15-016, Federal Highway Administration, Washington, DC, June 2016, 355 pp.
2. “AASHTO LRFD Bridge Design Specifications,” eighth edition, American Association of State Highway and Transportation Officials, Washington, DC, 2017, 1780 pp.
3. Shushkewich, K.W., “Design of Haunched Single Span Bridges,” Structural Engineering International, Journal of the IABSE, publication pending, 2020.
4. Mosley, W.H., and Spencer, W.J., Microcomputer Applications in Structural Engineering, Macmillan, London, 1984, 276 pp.
5. Shushkewich, K.W., “Simplified Equivalent Loads of Prestressing,” ASCE Journal of Structural Engineering, V. 117, No. 11, Nov. 1991, pp. 3538-3542.