Concrete walls represent an optimal solution for the design of buildings in seismic prone areas. In fact, being characterized by a high stiffness, such structural solution leads to a limitation of the interstorey drifts, reducing the economic consequences. Anyway, their reduced dissipative capacity might lead to high overturning moments, causing uneconomic solutions for the foundation system. To avoid such problems, hybrid steel-concrete shear walls (SRCW, Steel frame with Reinforced Concrete Wall) have been developed and deeply assessed during the past years. The additional presence of dissipative fuses, placed within the perimeter steel columns of the wall, allows the reduction of the force transmitted by the superstructure to the foundation system. A critical aspect for SRCW systems is represented by the disposition of shear studs, which strongly influence the global response of the whole hybrid wall. The present paper focuses on the development of a reliable numerical model, aimed at the execution of parametric simulation for the assessment of the influence of shear studs on the structural behaviour of SRCW systems.
Numerical modelling of the monotonic behaviour of hybrid steel-concrete shear walls
Francesco Morelli;Nicola Mussini;Walter Salvatore
2017-01-01
Abstract
Concrete walls represent an optimal solution for the design of buildings in seismic prone areas. In fact, being characterized by a high stiffness, such structural solution leads to a limitation of the interstorey drifts, reducing the economic consequences. Anyway, their reduced dissipative capacity might lead to high overturning moments, causing uneconomic solutions for the foundation system. To avoid such problems, hybrid steel-concrete shear walls (SRCW, Steel frame with Reinforced Concrete Wall) have been developed and deeply assessed during the past years. The additional presence of dissipative fuses, placed within the perimeter steel columns of the wall, allows the reduction of the force transmitted by the superstructure to the foundation system. A critical aspect for SRCW systems is represented by the disposition of shear studs, which strongly influence the global response of the whole hybrid wall. The present paper focuses on the development of a reliable numerical model, aimed at the execution of parametric simulation for the assessment of the influence of shear studs on the structural behaviour of SRCW systems.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
