JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Spacing of Intermediate Diaphragms Horizontally Curved Steel Box Girder Bridges considering Bending-distortional Warping Normal Stress Ratio
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Spacing of Intermediate Diaphragms Horizontally Curved Steel Box Girder Bridges considering Bending-distortional Warping Normal Stress Ratio
Lee, Jeong-Hwa; Lee, Kee-Sei; Lim, Jeong-Hyun; Choi, Jun-Ho; Kang, Young-Jong;
  PDF(new window)
 Abstract
Although distortions of horizontally curved box girder are more susceptible than which of the straight girder due to curvature effect, current domestic design standards does not present spacing of intermediate diaphragms for the curved box girder. In this study, parametric studies for straight and curved box girder considering distortional warping normal stresses based on linear finite element analysis were carried out. Single span curved girders were chosen for analysis based on current domestic bridge data with 1-6 of solid intermediate diaphragms, 0-30 degree of subtended angle, 30m and 60m of span length and 2-3m of flange width and web height. The adequate spacing of diaphragms for the box girder were suggested considering subtended angles and bending and distortional warping normal stress ratios with 5%, 10%, 15% and 20%. The analysis results were also compared to a current design standard and suggested spacing of diaphragm were evaluated.
 Keywords
Box girder;Curved bridge;Distortion;FEM;Spacing of diaphragm;
 Language
Korean
 Cited by
 References
1.
AASHTO. Guide Specifications for Horizontally Curved Steel Girder Highway Bridges. American Association of State Highway and Transportation Officials, Inc., Washington, D. C., 2003.

2.
AASHTO. AASHTO LRFD Bridge Design Specification. American Association of State Highway and Transportation Officials, Inc., Washington, D. C. 2012.

3.
Hanshin Expressway Public Corporation. Guilelines for the design of horizontally curved girder bridges, Japan, 1988.

4.
Korean Ministry of Construction and Transportation. Standard Specifications for Highway Bridges, Korea, 2010.

5.
N. H. Park, Y. J. Choi, G. S. Yi, Y. J. Kang, "Distortional Analysis of Steel Box Girders", Steel Structures, 2(2002), pp. 51-58, 2002. crossref(new window)

6.
N. H. Park, Y. J. Choi, Y. J. Kang. Spacing of intermediate diaphragms in horizontally curved steel box girder bridges, Finite Element in Analysis and Design, 41, pp. 925-943, 2005. DOI: http://dx.doi.org/10.1016/j.finel.2004.12.006

7.
Hiroshi. Nakai, C. H. Yoo, "Analysis and Design of Curved Steel Bridges", McGrawHill, 1988.

8.
Korean Ministry of Construction and Transportation. Standard Specifications for Highway Bridges, Korea, 2012.

9.
AASHTO. AASHTO LRFD Bridge Design Specification. American Association of State Highway and Transportation Officials, Inc., Washington, D. C. 1993.

10.
Korean Ministry of Construction and Transportation. Design Manual for Highway Bridges, Korea, 2008.