Towards Optimum Design for a Crack Width Limit States: the Need for Further Developments
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F18%3A00326355" target="_blank" >RIV/68407700:21610/18:00326355 - isvavai.cz</a>
Result on the web
<a href="https://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/175/36914" target="_blank" >https://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/175/36914</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2495/HPSM180141" target="_blank" >10.2495/HPSM180141</a>
Alternative languages
Result language
angličtina
Original language name
Towards Optimum Design for a Crack Width Limit States: the Need for Further Developments
Original language description
Serviceability limit states including cracking are of increasing importance and often dominate the design of reinforced concrete structures. Furthermore, actual crack widths and their shape play an important role in the assessment of service life of existing reinforced concrete structures. Crack width is inherently a random variable of considerable scatter due to randomness of material properties, geometry of the structure, loading and model uncertainty in crack width estimates. The state-of-the-art concepts for serviceability verifications were recently presented in fib Model Code 2010 that is jointly with Eurocode EN 1992-1-1 considered as key background materials in this study. To assess the sufficiency of code requirements and design procedures, crack widths of water retaining structures are investigated in detail using probabilistic methods of structural reliability. The current codes seem to be well calibrated to reach a target reliability index of 1.5 in the serviceability limit states. The two variables dominating structural reliability are uncertainty in crack width model and concrete cover. Numerous topics need to be further investigated including revision of crack width limits, improvements of mechanical models, quantification of model uncertainty, methodology for load combinations, treatment of spatial variability for large structures, and optimisation of target reliabilities.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of HPSM/OPTI 2018 - the 2018 International Conference on High Performance and Optimum Design of Structures and Materials
ISBN
978-1-78466-289-9
ISSN
1743-3509
e-ISSN
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Number of pages
10
Pages from-to
133-142
Publisher name
WIT Press, Ashurst Lodge
Place of publication
Southampton
Event location
Ljubljana
Event date
Jul 11, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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