Optimization of structural durability

Author(s): M. Holický
Paper category: Workshop
Book title: International RILEM Workshop on Integral Service Life Modelling of Concrete Structures
Editor(s): R.M. Ferreira, J. Gulikers, C. Andrade
Print ISBN: 978-2-35158-058-5
e-ISBN: 978-2-35158-090-5
Publisher: RILEM Publications SARL
Pages: 223 - 228
Total Pages: 6
Language: English

Principles of the probabilistic approach to structural durability will be soon provided in a newly developing international standard ISO „General Principles on the Design of Structures for Durability“. It is expected that after its completion the document will be implemented into the system of national standards in many countries. The operational use of the new procedures in practice would require additional studies focused on durability criteria, required reliability level, physical models of material deterioration, and theoretical models of basic variables.
An example of the durability limit state concerning reinforced concrete members illustrates the general optimization procedures. It appears that the optimum thickness of the concrete cover and the corresponding reliability level increases with the increasing cost of failure consequences and decreases with the increasing discount rate.
Further research into the target reliability levels considered in the limit states of structural durability should be based on advanced optimisation models, relevant economic data, physical models of material deterioration, and on theoretical models of basic variables.

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

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