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The Local Web Buckling Strength of Stiffened Coped Steel I-Beams
Michael C.H. Yam1; Angus C.C. Lam2; Feng Wei1,3; K. F. Chung4
2007-01
Source PublicationInternational journal of steel structures
ISSN1598-2351
Volume7Issue:2Pages:129-138
Abstract

In steel construction the flange of a steel I-beam is usually coped to allow clearance at the connection. The presence of a cope in a beam will reduce the strength of the beam in the coped region. Local web buckling at the coped region may occur when the cope length is long and/or the cope depth is large, provided that lateral-torsional buckling of the beam is prevented. Previous research recommended the provision of stiffeners at the coped region to improve the local web buckling strength of coped I-beams although no experimental evidence was provided to support the recommendation. In order to verify such recommendation, an experimental and numerical investigation of coped I-beams with stiffeners at the coped region was conducted and reported in this paper. The study showed that current recommendations did not consider the web distortion properly, i.e. local web buckling could not be prevented efficiently if only horizontal stiffeners were provided at the coped region. Both the test and the numerical results showed that the horizontal stiffeners at the cope displaced laterally due to gross web distortion. Based on the results of the parametric study of coped beams with different configurations of horizontal and vertical stiffeners, it was found that for cope depth to beam depth ratio (dc/D) ≥ 0.3, both horizontal and vertical stiffeners are required in order to prevent local web buckling at the cope region. A preliminary recommendation for the design of coped beams with both horizontal and vertical stiffeners was proposed according to the key findings of the investigation.

KeywordSteel I-beams Copes Local Buckling Stiffeners Strengthening Tests Finite Element Analysis
Indexed BySCI
Language英语
WOS Research AreaConstruction & Building Technology ; Engineering
WOS SubjectConstruction & Building Technology ; Engineering, Civil
WOS IDWOS:000255406300005
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Cited Times [WOS]:10   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorMichael C.H. Yam
Affiliation1.Hong Kong Polytech Univ, Dept Bldg & Real Estate, Kowloon, Hong Kong, Peoples R China
2.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa, Peoples R China
3.Chongqing Univ, Dept Civil Engn, Chongqing 400045, Peoples R China
4.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Michael C.H. Yam,Angus C.C. Lam,Feng Wei,et al. The Local Web Buckling Strength of Stiffened Coped Steel I-Beams[J]. International journal of steel structures,2007,7(2):129-138.
APA Michael C.H. Yam,Angus C.C. Lam,Feng Wei,&K. F. Chung.(2007).The Local Web Buckling Strength of Stiffened Coped Steel I-Beams.International journal of steel structures,7(2),129-138.
MLA Michael C.H. Yam,et al."The Local Web Buckling Strength of Stiffened Coped Steel I-Beams".International journal of steel structures 7.2(2007):129-138.
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