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http://dx.doi.org/10.7781/kjoss.2016.28.1.043

Numerical Study on Required Stiffness of Longitudinal Stiffener in Plate Girders  

Lee, Kun Joon (Dept. of Civil Engineering, Pusan National University)
Park, Yong Myung (Dept. of Civil Engineering, Pusan National University)
Kim, Byeong Jun (Dept. of Civil Engineering, Pusan National University)
Park, Chan Hee (POSCO Global R&D Center)
Publication Information
Journal of Korean Society of Steel Construction / v.28, no.1, 2016 , pp. 43-52 More about this Journal
Abstract
A numerical study on required stiffness of the longitudinal stiffener in the webs stiffened with flat plate at one-side of the web was conducted. The longitudinal stiffeners are commonly placed around 0.2D, i.e., 1/5 the web depth due to fabrication convenience although most plate girders for bridges are unsymmetric section. Considering asymmetry of section, aspect ratio of web and the rigidity ratio of longitudinal stiffener(${\gamma}^*$), eigenvalue analysis were performed to evaluate the buckling strength for the webs with a stiffener located at 0.16D~0.24D. Based on the parametric analysis, the required stiffness of the longitudinal stiffener to satisfy the buckling strength specified in AASHTO LRFD specifications was presented.
Keywords
Stiffened web; Buckling strength; Unsymmetric girder; Longitudinal stiffener; Required stiffness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Rockey, K.C. and Leggett (1962) The Buckling of a Plate Girder Web under Pure Bending When Reinforced by a Single Longitudinal Stiffener, Proc. Inst. Civil Engrs., Vol.21, No.1, pp.161-188.
2 Azhari, M. and Bradford, M.A. (1993) Local Buckling of I-Section Beams with Longitudinal Web Stiffeners, Thin-Walled Structures, Vol.15, No.1, pp.1-13.   DOI
3 Alinia, M.M. and Moosavi, S.H. (2008) A Parametric Study on the Longitudinal Stiffeners of Web Panels, Thin-Walled Structures, Vol.46, No.11, pp.1213-1223.   DOI
4 Maiorana, E., Pellegrino, C., and Modena, C. (2011) Influence of Longitudinal Stiffeners on Elastic Stability of Girder Webs, J. of Constructional Steel Research, Vol.67, No.1, pp.51-64.   DOI
5 Issa-El-Khoury, G., Linzell, D.G., and Geschwinder, L.F. (2014) Computational Studies of Horizontally Curved, Longitudinally Stiffened, Plate Girder Webs in Flexure, J. of Constructional Steel Research, Vol.93, pp.97-106.   DOI
6 American Association of State Highway and Transportation Officials (2012) AASHTO LRFD Bridge Design Specifications, 6 th ed., Washington D.C., USA.
7 Galambos, T.V. (1988) Guide to Stability Design Criteria for Metal Structures, 5th ed., John Wiley & Sons, Inc., USA.
8 Frank, K.H. and Helwig, T.A. (1995) Buckling of Webs in Unsymmetric Plate Girders, Engineering Journal, 2nd Quarter, pp.43-53.
9 American Association of State Highway and Transportation Officials (2014) AASHTO LRFD Bridge Design Specifications, 7th ed., Washington D.C., USA.
10 윤동용, 김경식(2007) 수평보강재가 설치된 플레이트 거더의 휨 연성에 관한 연구, 한국강구조학회논문집, 한국강구조학회, 제19권, 제6호, pp.643-653. Yoon, D.Y. and Kim, K.S. (2007) A Study on Flexural Ductility of Lobgitudinally Stiffened Plate Girders, Journal of Korean Society of Steel Construction, KSSC, Vol.19, No.6, pp.643-653.
11 한국도로교통협회(2012) 도로교설계기준(한계상태설계법), 국토해양부 제정. Korea Road and Transportation Association (2012) Korea Highway Bridge Design code(Limit State Design), sponsored by Ministry of Land, Infrastructure and Transport (in Korean).
12 한국도로교통협회(2010) 도로교설계기준, 국토해양부 제정. Korea Road and Transportation Association (2010) Standard Specification for Highway Bridges, sponserd by Ministry of Land, Infrastructure and Transport (in Korean).
13 ABAQUS (2004) Analysis User's Manual Version 6.5, ABAQUS, Inc. Pawtucket, RI.