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Reinforcing strategies for double-coped beams against local web buckling
Fang, Cheng1; Yam, Michael C. H.2; Lam, Angus C. C.3; Ke, Ke2
2017-12
Source PublicationENGINEERING STRUCTURES
ISSN0141-0296
Volume152Pages:736-749
Abstract

This paper presents a comprehensive numerical study on the strength and behaviour of double-coped beams (DCBs), with the focus on reinforcing strategies against local web buckling. Four reinforcement types, namely, longitudinal web stiffener (Type A), combined longitudinal and vertical web stiffeners (Type B), vertical and double longitudinal web stiffeners (Type C), and full-depth doubler plate (Type D), are considered. Through examining a suite of validated numerical models with a spectrum of cope details, it is found that the considered reinforcement types are in general effective, especially for the models with long or deep copes. Depending on the cope details and stiffener type, a series of failure modes, including local web buckling, web shear yielding, web shear buckling, tensile fracture of the bottom cope corner, and web crippling, are identified, and the effectiveness of the different reinforcement types on preventing or postponing these failure modes is discussed in detail. A preliminary design rule for checking the capacity of the reinforced coped section is also proposed in the paper, and additional analysis is performed to further evaluate the influences of varying reinforcement dimensions and boundary conditions on the ultimate capacity of the DCBs. Based on the numerical analysis, a set of prescriptive recommendations on reinforcement details is finally proposed, offering a simple yet safe guidance for new design or upgrade of DCB members. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordDouble-coped Beam Stiffener Doubler Plate Local Web Buckling Numerical Study Prescriptive Design Methods
DOI10.1016/j.engstruct.2017.09.049
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Civil
WOS IDWOS:000416188300053
PublisherELSEVIER SCI LTD
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorFang, Cheng
Affiliation1.Tongji Univ, Sch Civil Engn, Dept Struct Engn, Shanghai 200092, Peoples R China
2.Hong Kong Polytech Univ, Dept Bldg & Real Estate, Kowloon, Hong Kong, Peoples R China
3.Univ Macau, Dept Civil & Environm Engn, Macau, Peoples R China
Recommended Citation
GB/T 7714
Fang, Cheng,Yam, Michael C. H.,Lam, Angus C. C.,et al. Reinforcing strategies for double-coped beams against local web buckling[J]. ENGINEERING STRUCTURES,2017,152:736-749.
APA Fang, Cheng,Yam, Michael C. H.,Lam, Angus C. C.,&Ke, Ke.(2017).Reinforcing strategies for double-coped beams against local web buckling.ENGINEERING STRUCTURES,152,736-749.
MLA Fang, Cheng,et al."Reinforcing strategies for double-coped beams against local web buckling".ENGINEERING STRUCTURES 152(2017):736-749.
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