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Pro084-2

High strength reinforcement - a solution against latent instability due to stress redistribution



Author(s): F. Hude
Paper category: Proceedings
Book title: Proceedings of the Seventh International Conference on Concrete under Severe Conditions – Environment and Loading
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjřrv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 472-484
Total Pages: 13
Language : English


Abstract: Time effects like creep and shrinkage of concrete induce load redistribution in reinforced concrete structures from concrete to steel. These effects are usually neglected due to simplicity in calculations. But the load redistribution can lead to a latent instability or even failure of existing structures. In this paper, the neglected influence of time effects will be described and the instability will be shown in different examples. A solution to this problem is to use high strength reinforcement, with a yield strength fy greater than 600 N/mm˛. Mechanical properties of such reinforcements will be shown and the application of high strength reinforcement will be described. Furthermore, the advantages in using high strength reinforcement to solve the load redistribution issue are explained and a practical way to calculate these effects is shown. To show the use of the theoretical approach some examples of real famous buildings will be designed and the result of the suggested design will be compared with the as-built design.


Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00


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