Strength and Stability Analysis of Horizontally Curved I-Girder

Aswathy K V, Sunilkumar N


Horizontally curved girders are used in the construction of highway bridges and interchange facilities. The use of curved girders in curved bridges results in longer spans and fewer piers. Due to its curvature, the behavior of curved I-girder is different from that of straight I-girder. The curvature creates a geometrically unstable situation and it introduces torsional effects in addition to the vertical bending effects. This paper presents the analysis of strength and stability of horizontally curved steel I-girder by the Finite Element Method (FEM). The straight and curved I-girders have been analysed in the finite element analysis software and a comparison is made between the structural behaviors of those girders.


Curved I-girder, steel girder, strength, stability, finite element analysis

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M. D. Simpson, “Analytical investigation of curved steel I-girder behaviour”, Ph D thesis, University of Toronto, 2000.

C. J. Chang and D. W. White, “An assessment of modeling strategies for composite curved steel I-girder bridges”, Journal of Engineering Structures, vol. 30, 2008, pp. 2991-3002.

N. E. Shanmugam, V. Thevendran, J. Y. R. Liew and L. O. Tan, “Experimental study on steel beams curved in plan”, Journal of Structural Engineering, vol. 121, No.2;, 1995, pp. 249-259.

J. C. Stith, “Predicting the behavior of horizontally curved I-girders during construction”, Ph. D thesis, The University of Texas at Austin, 2010.

B. D. Chavel, “Construction and detailing methods of horizontally curved steel I-girder bridges”, Ph. D thesis, University of Pittsburgh, 2008.

W. F. Chen and L. Duan, Bridge Engineering Handbook, CRC Press, Washington DC, 2000.

AASHTO/NSBA Steel Bridge Collaboration publication. Guidelines for steel girder bridge analysis, 1st ed., Washington, D.C, 2011.

N. W. Murray, Introduction to the theory of thin walled structures, Clarendon Press, OXFORD, 1984.

NCHRP Synthesis 424. “Improved Design Specifications for Horizontally Curved Steel Girder Highway Bridges”, Transportation Research Board of the National Academies, Washington, D.C, 1999.

S. K. Jung and D. W. White, “Shear strength of horizontally curved steel I-girders - finite element analysis studies”, vol. 62. Journal of Constructional Steel Research, 2005, pp. 329-342.

ANSYS 12.1 Documentation preview, Theory of reference and element library.

N. K. Raju and D. R. Gururaja. Advanced Mechanics of Solids and Structures, Narosa Publishing House, New Delhi, 1997, pp. 102-110.

V. N. Vazirani, M. M. Ratwani and S. K. Duggal, Analysis of Structures: Analysis, Design and Details of Structures, vol. 1. Khanna Publishers, Delhi, 2002, pp. 280-330, 1310.


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