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Design aspects of Eurocode 2 methods for deflection control

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Pecić, Nenad
Marinković, Snežana
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Abstract
Paper deals with problems arising from application of the EN 1992-1-1:2004 deflection control clauses. Remarks are addressed both to the instructions for a rigorous method and to the simplified procedure for an indirect check of deflections. It is shown that EC2 span-to-depth ratio limits for indirect check are evaluated for an inappropriate quasi-permanent to ultimate load ratio. The same procedure is adopted in the First complete draft of the fib Model Code 2010. Besides, calculated deflections of the statically indeterminate concrete elements are affected by the redistribution of bending moments caused by cracking, creep and shrinkage of concrete. Use of a moment diagram based on the gross-concrete section may divert the result of rigorous method in a large amount. In such cases, the effort involved with rigorous method is not justified by the quality of obtained result. The results of both procedures are analyzed on numerical examples.
Keywords:
concrete / deflection control / moment redistribution / Eurocode 2 / MC 2010
Source:
Fib Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2, 2011, 195-198
Publisher:
  • Czech Concrete Society

WoS: 000391516400032

Scopus: 2-s2.0-85015308273
[ Google Scholar ]
1
Handle
https://hdl.handle.net/21.15107/rcub_grafar_421
URI
https://grafar.grf.bg.ac.rs/handle/123456789/421
Collections
  • Radovi istraživača / Researcher's publications
  • Катедра за материјале и конструкције
Institution/Community
GraFar
TY  - CONF
AU  - Pecić, Nenad
AU  - Marinković, Snežana
PY  - 2011
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/421
AB  - Paper deals with problems arising from application of the EN 1992-1-1:2004 deflection control clauses. Remarks are addressed both to the instructions for a rigorous method and to the simplified procedure for an indirect check of deflections. It is shown that EC2 span-to-depth ratio limits for indirect check are evaluated for an inappropriate quasi-permanent to ultimate load ratio. The same procedure is adopted in the First complete draft of the fib Model Code 2010. Besides, calculated deflections of the statically indeterminate concrete elements are affected by the redistribution of bending moments caused by cracking, creep and shrinkage of concrete. Use of a moment diagram based on the gross-concrete section may divert the result of rigorous method in a large amount. In such cases, the effort involved with rigorous method is not justified by the quality of obtained result. The results of both procedures are analyzed on numerical examples.
PB  - Czech Concrete Society
C3  - Fib Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2
T1  - Design aspects of Eurocode 2 methods for deflection control
EP  - 198
SP  - 195
UR  - https://hdl.handle.net/21.15107/rcub_grafar_421
ER  - 
@conference{
author = "Pecić, Nenad and Marinković, Snežana",
year = "2011",
abstract = "Paper deals with problems arising from application of the EN 1992-1-1:2004 deflection control clauses. Remarks are addressed both to the instructions for a rigorous method and to the simplified procedure for an indirect check of deflections. It is shown that EC2 span-to-depth ratio limits for indirect check are evaluated for an inappropriate quasi-permanent to ultimate load ratio. The same procedure is adopted in the First complete draft of the fib Model Code 2010. Besides, calculated deflections of the statically indeterminate concrete elements are affected by the redistribution of bending moments caused by cracking, creep and shrinkage of concrete. Use of a moment diagram based on the gross-concrete section may divert the result of rigorous method in a large amount. In such cases, the effort involved with rigorous method is not justified by the quality of obtained result. The results of both procedures are analyzed on numerical examples.",
publisher = "Czech Concrete Society",
journal = "Fib Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2",
title = "Design aspects of Eurocode 2 methods for deflection control",
pages = "198-195",
url = "https://hdl.handle.net/21.15107/rcub_grafar_421"
}
Pecić, N.,& Marinković, S.. (2011). Design aspects of Eurocode 2 methods for deflection control. in Fib Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2
Czech Concrete Society., 195-198.
https://hdl.handle.net/21.15107/rcub_grafar_421
Pecić N, Marinković S. Design aspects of Eurocode 2 methods for deflection control. in Fib Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2. 2011;:195-198.
https://hdl.handle.net/21.15107/rcub_grafar_421 .
Pecić, Nenad, Marinković, Snežana, "Design aspects of Eurocode 2 methods for deflection control" in Fib Symposium Prague 2011: Concrete Engineering for Excellence and Efficiency, Vols 1 and 2 (2011):195-198,
https://hdl.handle.net/21.15107/rcub_grafar_421 .

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