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PLASTIC DESIGN FOR COMPOSITE BEAMS - ARE THERE ANY LIMITS?
Schäfer, Markus; Zhang, Qingjie; Braun et al.
2019In Proceedings of the 9th International Conference on Steel and Aluminium Structures ICSAS19
Peer reviewed
 

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Keywords :
Compsoie Beams; Strain limited design; PArtial Shear Connection
Abstract :
[en] Due to the demand for sustainable constructions, composite structures have become more important and lead to slim and economic solutions with a low structural self-weight. EN 1994-1-1 differentiate four different cross-section classes for the determination of moment resistance. For the plastic design of the moment resistance it is assumed, that each cross-sectional fibre can plastify without any limitation of the strains. For standard composite beams in case of sagging moments and a high-lying plastic neutral axis, plastic design and strain-limited design give similar results. In the case of sections with a large compression zone height xpl and limited rotation capacity, a concrete failure in the compression zone can occur before the plastic moment resistance Mpl,Rd, is reached. The strain limit design becomes decisive. This paper points out the impact of the concrete part on the design of composite beams. A parametric study comparing plastic and strain limited moment resistance of a considerable variety of cross-sections has been carried out to develop the beam design methods considering high compression zone height of next generation of Eurocodes.
Disciplines :
Civil engineering
Author, co-author :
Schäfer, Markus ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Zhang, Qingjie ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Braun
Banfi, Mike
External co-authors :
yes
Language :
English
Title :
PLASTIC DESIGN FOR COMPOSITE BEAMS - ARE THERE ANY LIMITS?
Publication date :
July 2019
Event name :
9th International Conference on Steel and Aluminium Structures (ICSAS19)
Event place :
Bradford, United Kingdom
Event date :
3.-5. July 2019
By request :
Yes
Audience :
International
Main work title :
Proceedings of the 9th International Conference on Steel and Aluminium Structures ICSAS19
Peer reviewed :
Peer reviewed
Focus Area :
Physics and Materials Science
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