Abstract
AbstractSteel plate shear walls (SPSWs) are innovative systems able to confer to either new or existing structures a significant capacity to resist earthquake and wind loads. Many tests have shown that these devices may exhibit high strength, initial stiffness and ductility, as well as an excellent ability to dissipate energy. When full SPSWs are used as bracing devices of buildings, they may induce excessive stresses in the surrounding main structure where they are inserted, so to require the adoption of large cross section profiles. For this reason, perforated steel panels, which are weakened by holes aiming at limiting the actions transmitted to the surrounding frame members, represent a valid alternative to full panels. In this work, aiming at showing the advantages of such devices, a FEM model of perforated panels has been calibrated on the basis of recent experimental tests. Subsequently, a parametric FEM analysis on different series of perforated panels, by changing the number and diameter of the h...
Highlights
The seismic protection systems based on the use of steel plate shear walls (SPSWs) consist of stiff horizontal and vertical boundary frame elements and infill plates
This study aims to examine a new passive control device based on perforated metal shear panels (PMSPs)
The results have shown that the FEM model is able to satisfactorily simulate the behaviour of shear panels in terms of stiffness
Summary
This study aims to examine a new passive control device based on perforated metal shear panels (PMSPs). Such a technique is advantageous for seismic retrofitting of rc and steel buildings, designed according to obsolete design codes, which are vulnerable to earthquakes. In this framework, PMSPs are highly competitive with the common intervention techniques, since they can increase simultaneously the performance of the buildings in terms of lateral strength, initial stiffness, ductility and dissipated energy. Design charts for the estimation of shear strength and initial stiffness of PMSPs are proposed in order to encourage practitioners to use them
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