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Elastic lateral-torsional buckling of tapered I-girder with corrugated webs

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Abstract

This paper deals with the elastic lateral-torsional buckling (LTB) strength of tapered I-girders with corrugated webs under two types of loading conditions: uniform moment and moment gradient with various end restraint conditions. A finite element (FE) program using beam elements is developed to study LTB behaviors. The results from this program are compared with those from the commercial software ABAQUS using shell elements. From the comparisons, it is found that the developed FE program’s results agree well with the results from ABAQUS. For design purpose, the closed-form equations for the critical buckling moment of the tapered I-girder with corrugated webs under uniform moment and moment gradient with four types of end restraint conditions: simply supported, warping fixed, lateral bending fixed, and completely fixed are proposed based on the results from the developed FE program. From the numerical investigations, the new design equations give reasonably accurate results. These equations increase efficiency in bridges and buildings design.

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Authors and Affiliations

  1. Senior Design Engineer, Dragages Singapore Pte Ltd., 19 Keppel Road, #10-00, Jit Poh Building, 089058, Singapore, Singapore

    Ngoc Duong Nguyen

  2. Faculty of Civil Engineering, HoChiMinh City University of Architecture, 196 Pasteur, District 3, HCM, 70000, Vietnam

    Hieu Nguyen-Van

  3. School of Civil, Environmental & Architectural Engineering, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul, 136-701, Korea

    Sang-Yun Han, Jun-Ho Choi & Young-Jong Kang

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  1. Ngoc Duong Nguyen
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  2. Hieu Nguyen-Van
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  3. Sang-Yun Han
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  4. Jun-Ho Choi
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  5. Young-Jong Kang
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Correspondence to Young-Jong Kang.

Additional information

Note.-Discussion open until August 1, 2013. This manuscript for this paper was submitted for review and possible publication on June 29, 2012; approved on February 19, 2013.

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Nguyen, N.D., Nguyen-Van, H., Han, SY. et al. Elastic lateral-torsional buckling of tapered I-girder with corrugated webs. Int J Steel Struct 13, 71–79 (2013). https://doi.org/10.1007/s13296-013-1007-8

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