Pilot comparison of safety formats for reliability assessment of RC structures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU132269" target="_blank" >RIV/00216305:26110/19:PU132269 - isvavai.cz</a>

Alternative codes found

RIV/28399269:_____/19:N0000007 RIV/68407700:21610/19:00331722

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Pilot comparison of safety formats for reliability assessment of RC structures

Original language description

ib Model Code 2010 and its ongoing revision consider a comprehensive system for treating reliability and uncertainty in reliability assessment and design of reinforced concrete (RC) structures using a nonlinear analysis. This study analyses a simply supported RC beam for which shear resistance has been experimentally verified, and steel yielding or concrete failure can be observed by varying shear reinforcement ratio. The effect of different failure modes is investigated by comparing design resistance obtained by selected safety formats: probabilistic assessment using LHS, estimate of coefficient of variation ECoV, global resistance format, and the partial factor method. The MC2010 Level of Approximation 3 (LoA3) is applied to represent models that combine the reinforcement and concrete contributions. A reference solution is provided by the probabilistic approach that inherently takes into account the correlation between the failure modes. It appears that the partial factors for materials, commonly adopted in design, are low and fail to adequately reflect the increased model uncertainty related to LoA3. The ECoV estimates are very close to the reference design values and in this case the flexibility of the method is demonstrated. The care needs to be taken when interpreting design values based on a few simulations – the effect of statistical uncertainty may be substantial.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/GA17-02862S" target="_blank" >GA17-02862S: Probabilistic modelling and optimization of shear strength of concrete beams (PROMOSS)</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures

ISBN

9782940643004

ISSN

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e-ISSN

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Number of pages

7

Pages from-to

2076-2083

Publisher name

International Federation for Structural Concrete

Place of publication

Neuveden

Event location

Krakow

Event date

May 27, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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