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Назив: Strength reduction method for a factor of safety determination of damaged concrete structures
Аутори: Rakić, Dragan
Dunić, Vladimir
Zivkovic, Miroslav
Radovanović, Slobodan
Divac, Dejan
Šumarac, Dragoslav
Датум издавања: 2023
Сажетак: The paper presents the procedure for determining the factor of safety (FoS) using the strength reduction method (SRM) for the case of a concrete damage plasticity constitutive model. The SRM was originally used in a slope stability analysis and in its original form, this method was applied by reducing the shear strength of the material. Since damage in concrete occurs due to exceeding the normal stresses in the principal directions, and not due to exceeding the shear strength, this method was modified and adapted to the concrete damage plasticity constitutive model. Instead of reducing the failure surface, the parameters which describe the mechanical behavior in the case of uniaxial compression and uniaxial tension were reduced. In this way, the reduction of stress and the corresponding strain was carried out in the entire range of total strain, without changing the shape of the failure surface in the deviator plane. For the proposed methodology, a numerical algorithm was developed and implemented into the software PAK. The algorithm was verified through test examples and the obtained results were compared with analytically calculated FoS. The excellent agreement is observed between the FoS obtained by applying the proposed algorithm and the analytically calculated FoS.
URI: https://scidar.kg.ac.rs/handle/123456789/18718
Тип: article
DOI: 10.1177/10567895231183469
ISSN: 1056-7895
Налази се у колекцијама:Faculty of Engineering, Kragujevac

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