TY - JOUR
T1 - Investigation of the influence of design and material parameters in the progressive collapse analysis of RC structures
AU - Santafé Iribarren, B.
AU - Berke, P.
AU - Bouillard, Ph
AU - Vantomme, J.
AU - Massart, T. J.
PY - 2011/10
Y1 - 2011/10
N2 - This contribution deals with the modelling of reinforced concrete (RC) structures in the context of progressive collapse simulations. One-dimensional nonlinear constitutive laws are used to model the material response of concrete and steel. These constitutive equations are introduced in a layered beam approach, in order to derive physically motivated relationships between generalised stresses and strains at the sectional level. This formulation is used in dynamic progressive collapse simulations to study the structural response of a multi-storey planar frame subjected to a sudden column loss (in the impulsive loading range). Thanks to the versatility of the proposed methodology, various analyses are conducted for varying structural design options and material parameters, as well as progressive collapse modelling options. In particular, the effect of the reinforcement ratio on the structural behaviour is investigated. Regarding the material modelling aspects, the influence of distinct behavioural parameters can be evaluated, such as the ultimate strain in steel and concrete or the potential material strain rate effects on the structural response. Finally, the influence of the column removal time in the sudden column loss approach can also be assessed. Significant differences are observed in terms of progressive failure patterns for the considered parametric variations.
AB - This contribution deals with the modelling of reinforced concrete (RC) structures in the context of progressive collapse simulations. One-dimensional nonlinear constitutive laws are used to model the material response of concrete and steel. These constitutive equations are introduced in a layered beam approach, in order to derive physically motivated relationships between generalised stresses and strains at the sectional level. This formulation is used in dynamic progressive collapse simulations to study the structural response of a multi-storey planar frame subjected to a sudden column loss (in the impulsive loading range). Thanks to the versatility of the proposed methodology, various analyses are conducted for varying structural design options and material parameters, as well as progressive collapse modelling options. In particular, the effect of the reinforcement ratio on the structural behaviour is investigated. Regarding the material modelling aspects, the influence of distinct behavioural parameters can be evaluated, such as the ultimate strain in steel and concrete or the potential material strain rate effects on the structural response. Finally, the influence of the column removal time in the sudden column loss approach can also be assessed. Significant differences are observed in terms of progressive failure patterns for the considered parametric variations.
KW - Finite elements method
KW - Layered beam
KW - Progressive collapse
KW - Reinforced concrete
KW - Strain rate effects
KW - Structural dynamics
UR - http://www.scopus.com/inward/record.url?scp=79961169877&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2011.06.005
DO - 10.1016/j.engstruct.2011.06.005
M3 - Article
AN - SCOPUS:79961169877
SN - 0141-0296
VL - 33
SP - 2805
EP - 2820
JO - Engineering Structures
JF - Engineering Structures
IS - 10
ER -