Since several decades, Steel Plate Shear Walls (SPSWs), which consist of thin steel plates inserted within a surrounding steel frame, were used as resistant systems of buildings against seismic loads. In order to reduce the stresses to boundary frame members, these systems can be appropriately weakened by some holes. The distribution level of stresses around the holes is dependent on their dimension, number and location. In order to avoid fracture phenomena, such concentrations of stresses can be checked through the evaluation of equivalent plastic strains in the steel plate. In the current study, firstly a benchmark experimental test on a perforated SPSW has been simulated by the ABAQUS non-linear numerical analysis software. Subsequently, a parametric FEM analysis on two different kinds of perforated SPSWs with has been carried out aiming at assessing the fracture distribution around holes. Finally, the achieved results have been compared to each other in order to find the best perforation pattern for each kind of perforated SPSW able to exhibit the highest dissipative behaviour and strength.
EVALUATION OF EFFECTIVE PERFORATION PATTERNS OF STEEL PLATE SHEAR WALLS
De Matteis, G.
2018
Abstract
Since several decades, Steel Plate Shear Walls (SPSWs), which consist of thin steel plates inserted within a surrounding steel frame, were used as resistant systems of buildings against seismic loads. In order to reduce the stresses to boundary frame members, these systems can be appropriately weakened by some holes. The distribution level of stresses around the holes is dependent on their dimension, number and location. In order to avoid fracture phenomena, such concentrations of stresses can be checked through the evaluation of equivalent plastic strains in the steel plate. In the current study, firstly a benchmark experimental test on a perforated SPSW has been simulated by the ABAQUS non-linear numerical analysis software. Subsequently, a parametric FEM analysis on two different kinds of perforated SPSWs with has been carried out aiming at assessing the fracture distribution around holes. Finally, the achieved results have been compared to each other in order to find the best perforation pattern for each kind of perforated SPSW able to exhibit the highest dissipative behaviour and strength.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
