Distortional Analysis of Laminated Composite Box Girders

Shitalkumar Chaudhari*, Akhil Upadhyay**
* P.G Student, Indian Institute of Technology, Roorkee.
** Associate Professor, Indian Institute of Technology, Roorkee.
Periodicity:September - November'2013
DOI : https://doi.org/10.26634/jce.3.4.2521


Analysis of longitudinal bending and pure torsion can be made by means of elementary theories while distortional effects in the box girders cannot be predicted by these theories. The distortional action of the box girder consists of (a) transverse deformation and (b) longitudinal deformation (warping). Laminated composites, which are of orthotropic nature were initially limited to aerospace applications, but now gradually they are being applied in structural applications. The orthotropic nature of FRP has to be taken into consideration in all these analysis. The effect of orthotropy due to fiber orientations is studied by changing the orthotropy ratio of different elements of the FRP single- cell box beam subjected to the distortional loading. Similarly, the effect of cross-sectional parameters on the distortional stresses is also studied. All these analysis is carried out by using the FEM package ANSYS 7.1. Then BEF charts are developed for 0, ± 45, 90 fiber orientations of the box beam and these charts are validated for different cross-sections as well as different geometrical properties.


Box Girder, FRP Box Girder, Distortional Behaviour, Distortional Stress, Warping Stress.

How to Cite this Article?

Chaudhari,S.C., and Upadhyay,A. (2013). Distortional Analysis Of Laminated Composite Box Girders . i-manager’s Journal on Civil Engineering, 3(4), 1-15. https://doi.org/10.26634/jce.3.4.2521


[1]. Khalifa M.A, Hodhod O.A, Zaki M.A. (1996). "Analysis and design methodology for an FRP cable-stayed pedestrian bridge" Composites Part B-Engineering, 27 (3-4), 307-317.
[2]. Christos C. Chamis and Pappu L. N. Murthy (1989). "Design Procedures for Fiber Composite Box Beams", Technical Memorandum, National Aeronautics and Space Administration,1-24.
[3]. Rehfield, L.W., Atilgan, A. R. and Hodges, D. H. (1990). “Nonclassical Behavior of Thin-Walled Composite Beams with Closed Cross Sections,” Journal of the American Helicopter Society, Vol. 35, pp. 42–50.
[4]. Wu, X. X. and Sun, C. T. (1992). “Simplified Theory for Composite Thin-Walled Beams,” AIAA Journal, Vol. 30, No. 12, pp. 2945–2951.
[5]. Valsov, V.Z. (1961), “Thin-walled elastic beams,” 2nd Ed., National Science Foundation, Washington, D.C.
[6]. Wright. R. N. Abdel-Samad. S. R. and Robinson. A. R (1968). “BEF analogy for analysis for analysis of box girders.” J.Struct. Eng., 94(ST7), 1719-1046.
[7]. Dabrowski, R. (1968), “Curved Thin-Walled Girders,” Cement and Concrete Association, London.
[8]. Dezi, L. (1985). ''Aspects of the deformation of the cross-section in curved singlecell box beams.'' Industria Italiana Del Cemento, 55(7–8), 500–808
[9]. Chapman, J. C., Dowling, P. J., Lim, P. T. K. and Billington (1971), “The structural behaviour of steel and concrete box girder bridges,” The Structural Engineer, Vol. 49, pp. 111-120.
[10]. Trukstra, C. J., and Fam, A.R. (1978). “Behaviour study of curved box bridges.” J.Struct. Div., 104(ST3), 453-462.
[11]. Chung, M. S., Bakht, B., and Jaeger, L. G (1982). “Analysis of box girder bridges by grillage and orthotropic plate methods.” Can. J. Civ. Eng., 9(4), 595-601.
[12]. Knittel, G (1965). "Zur Berechnung Des Dunnwandigen Kastentragers Mit Gleichbleiben Syllmetrischen Querschnit," , Beton und Stahlbetonbau, Vol. 60, Bulletin 9, Berlin, September.
[13]. Prakash rao, D. S. (1981). “Influence of cross-sectional parameters on the distortion of concrete box girders.” Beton and Stahlbetonbau. Vol. 76, pp. 6-9.
[14]. Upadhyay, A and Kalyanaraman, V..; (2003). “Simplified analysis of FRP box-girders.” Composite Structures 59, PP 217-225.
[15]. Zhanfei “Tom” Fan, and Todd A. Helwig, (2002) “Distortional Loads and Brace Forces in Steel Box Girders.” J.Struct. Eng., 128(6), 710-718.
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe
India Rest of world
Pdf 35 35 200 20
Online 35 35 200 15
Pdf & Online 35 35 400 25

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.