Moment modification factors of I-girder with trapezoidal web corrugations under moment gradient
- Authors
- Ngoc Duong Nguyen; Han, Seung-Ryong; Kim, Jung-Hun; Kim, Sung-Nam; Kang, Young-Jong
- Issue Date
- 8월-2012
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Moment modification factor; Moment gradient; End restraint conditions; Trapezoidal web corrugations; I-girder
- Citation
- THIN-WALLED STRUCTURES, v.57, pp.1 - 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- THIN-WALLED STRUCTURES
- Volume
- 57
- Start Page
- 1
- End Page
- 12
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/107792
- DOI
- 10.1016/j.tws.2012.03.016
- ISSN
- 0263-8231
- Abstract
- This paper investigates the moment modification factors of an I-girder with trapezoidal web corrugations under moment gradient and various end restraint conditions. The moment modification factors are obtained by using the finite element method with beam elements and new general formulas of cross-section properties as well as a new warping constant of the I-girder with trapezoidal web corrugations. The theoretical results of moment modification factors are successfully verified by comparing them with the results from the commercial finite element software using shell elements. A series of finite element analyses with different corrugation profiles and lengths are investigated. From the results, it is found that the present design of moment modification factor formulas cannot satisfactorily predict the buckling capacities of the I-girder with trapezoidal web corrugations under unequal end moments with various end restraint conditions. For the purpose of design, the closed-form expressions for the moment modification factors are proposed and successfully verified. (C) 2012 Elsevier Ltd. All rights reserved.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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