Uncertainty in Geometry and Modelling in Safety Formats for Nonlinear Analysis of RC Structures Case Study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F21%3A00353885" target="_blank" >RIV/68407700:21610/21:00353885 - isvavai.cz</a>

Alternative codes found

RIV/28399269:_____/21:N0000009

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Uncertainty in Geometry and Modelling in Safety Formats for Nonlinear Analysis of RC Structures Case Study

Original language description

The partial factor method is the basic method for the design of new structures and reliability assessment of existing structures. It offers a pragmatic approach, sufficient for many reinforced concrete (RC) structures in various design or assessment situations. However, the global safety format or probabilistic reliability analysis may be more appropriate in cases with strong non-linear behavior, dominating tensile and fracture-mechanical properties, or with multiple failure modes of similar importance. fib Model Code 2010 and its revision under development (MC 2020) introduce a comprehensive system for reliability verifications based on non-linear finite element analysis (NLFEA). Focusing on structural resistance, NLFEA can be based on the partial factor method (PFM), global factor method (GFM), and full probabilistic method (PM). This study focuses on a simply supported RC beam for which tests indicate two competing failure mechanisms bending and shear. The effect of different failure modes is investigated by comparing design resistances obtained by the three safety formats. Reflecting drafts of MC 2020 and prEN 1992 for design and assessment of concrete structures, it is shown how uncertainty in geometry can be incorporated in NLFEA. The case study demonstrates that uncertainty in geometry can be included in various safety formats for NLFEA of RC structures. Numerical investigations reveal that there are negligible differences amongst design bending resistances and they show a very good agreement with analytical methods.

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/GA20-01781S" target="_blank" >GA20-01781S: Uncertainty modelling in safety formats of concrete structures</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Article name in the collection

Concrete Structures: New Trends for Eco-Efficiency and Performance

ISBN

978-2-940643-08-0

ISSN

2617-4820

e-ISSN

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Number of pages

10

Pages from-to

2325-2334

Publisher name

Fédération Internationale du Béton

Place of publication

Lausanne

Event location

online from Lisbon

Event date

Jun 14, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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