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Finite element modelling of two-way RC slabs with varying modelling choices

Jiangpeng Shu (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; Mario Plos (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; Karin Lundgren (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; Kamyab Zandi Hanjari (Institutionen för bygg- och miljöteknik, Konstruktionsteknik)
[Konferensbidrag, refereegranskat]

Non-linear finite-element (FE) method is today commonly used to simulate the behavior of reinforced concrete structures. The study presented in this paper comprises non-linear FE analyses of the behavior of two-way RC slabs and a comparison with experimental results. In the analyses, the concrete in compression was described by an isotropic damage constitutive law. In tension, a total strain model with rotating crack was adopted. The reinforcement was described by a Von Mises plasticity model, including hardening. The load-displacement relationship, and crack pattern of the two-way slabs under a concentrated load were compared to experimental results. The influence of some modelling choices, such as element type, mesh density, and reinforcement-concrete interaction were investigated. Analyses with varying mesh size resulted in very small difference in the results. The analysis including bond-slip gave lower stiffness at the cracking stage, and displayed more localized cracks compared to the analysis with full interaction, while both had the same ultimate load capacity.

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Denna post skapades 2014-08-27. Senast ändrad 2015-07-28.
CPL Pubid: 202027


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Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Konstruktionsteknik


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Chalmers infrastruktur