Probabilistic Approach to Service Life of Concrete Structures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F20%3A00344417" target="_blank" >RIV/68407700:21610/20:00344417 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3850/978-981-14-8593-0_3875-cd" target="_blank" >https://doi.org/10.3850/978-981-14-8593-0_3875-cd</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3850/978-981-14-8593-0_3875-cd" target="_blank" >10.3850/978-981-14-8593-0_3875-cd</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Probabilistic Approach to Service Life of Concrete Structures

Popis výsledku v původním jazyce

The concept of the service life of structures is included in international standards ISO, in the European document EN 1990, in the recent document CEN for assessment of existing structures – Technical Specification TS and related prEN 1990 (part 2). The submitted contribution includes the definition of service life (performance time) tser, considering the resistance (resilience) of a structure R(t) and the effect of actions S(t). Due to the random variability of the variables R(t) and S(t), the service life tser, needs to be linked with the probability that structural performance is partly or completely insufficient. Basically, serviceability and ultimate limit states, SLS and ULS respectively, should be considered. In the case of new concrete structures, a proxy limit state corresponding to the initiation of the degradation process (corrosion of reinforcement) is often considered (ILS). The application of the probabilistic approach is illustrated by a practical example of assessing the service life of a concrete industrial chimney. It appears that the predicted service life considerably depends on an adopted target reliability level. Optimum target levels for the ILS, SLS, and ULS for a particular type of structure should be specified on the basis of economic optimization studies.

Název v anglickém jazyce

Probabilistic Approach to Service Life of Concrete Structures

Popis výsledku anglicky

The concept of the service life of structures is included in international standards ISO, in the European document EN 1990, in the recent document CEN for assessment of existing structures – Technical Specification TS and related prEN 1990 (part 2). The submitted contribution includes the definition of service life (performance time) tser, considering the resistance (resilience) of a structure R(t) and the effect of actions S(t). Due to the random variability of the variables R(t) and S(t), the service life tser, needs to be linked with the probability that structural performance is partly or completely insufficient. Basically, serviceability and ultimate limit states, SLS and ULS respectively, should be considered. In the case of new concrete structures, a proxy limit state corresponding to the initiation of the degradation process (corrosion of reinforcement) is often considered (ILS). The application of the probabilistic approach is illustrated by a practical example of assessing the service life of a concrete industrial chimney. It appears that the predicted service life considerably depends on an adopted target reliability level. Optimum target levels for the ILS, SLS, and ULS for a particular type of structure should be specified on the basis of economic optimization studies.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

E-proceedings of the 30th European Safety and Reliability Conference and 15th Probabilistic Safety Assessment and Management Conference (ESREL2020 PSAM15)

ISBN

978-981-14-8593-0

ISSN

—

e-ISSN

—

Počet stran výsledku

8

Strana od-do

4711-4718

Název nakladatele

Research Publishing Services

Místo vydání

Singapore

Místo konání akce

Venice

Datum konání akce

1. 11. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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