Probabilistic Seismic Assessment of CoSPSW Structures Using Fragility Functions

Abstract

The corrugated steel plate shear wall (CoSPSW) is a new type of steel plate shear wall, in which corrugated wall plates instead of flat wall plates are adopted. The lateral stiffness and shear buckling capacity of the shear wall system could be significantly enhanced, and then, wall plate buckling under gravity loads would be mitigated. This paper presents a study on the probabilistic assessment of the seismic performance and vulnerability of CoSPSWs using fragility functions. The damage states and corresponding repair states of CoSPSWs were first established from experimental data. Then, incremental dynamic analyses were conducted on the CoSPSW structures. The structural and nonstructural fragility functions were developed, based on which the seismic performance and vulnerability of the CoSPSWs were obtained and compared with the conventional steel plate shear walls (SPSWs). It was shown that for various repair states, the 25th percentile PGA of the CoSPSW was always higher than the SPSWs with the same wall thickness and boundary frame, which indicated that the CoSPSW has a lower damage potential and better seismic performance than the SPSW.

Methodical Investigations on Seismic Retrofitting of Steel Plate Shear Wall Systems

“…This enables the probabilistic evaluation of seismic responses as well as a vulnerability assessment of the original and retrofitted SPSW systems. The seismic performances of various structures have been investigated probabilistically by developing fragility functions for different damage and/or repair states [20]. For example, Jiang et al [21] applied the fragility methodology to assess the impacts of potential uncertainties on the seismic risk of a steel frame equipped with a steel panel wall.…”

Modelling, Test and Practice of Steel Structures

“…Nine papers focused on the mechanical properties of the components and joints of steel and steel-based composite structures, which presented investigations on shear square section steel tube dampers [4], diagonally stiffened steel plate walls [5], offshore platform deck structures [6], ship local structures [7], an L-shaped column composed of RAC-filled steel tubes [8], corrugated steel plate shear walls [9], partially connected steel plate shear walls [10], pipe-in-pipe systems [11], and bolted ball-cylinder joints [12].…”

Effects of Infill Plate’s Interconnection and Boundary Element Stiffness on Steel Plate Shear Walls’ Seismic Performance

“…Previous studies indicated the advantages of the use of these systems in significantly space-constrained areas and high seismic conditions [1][2][3]. Recent investigations allocated to improve the performance of this system, by limiting the interconnection interactions between the plate and the boundary elements [4,5], temperature field reconstruction [6], stiffened SPSWs [7,8], various geometrical shapes and infill plate conditions [9], effects of openings [10,11], infill plate types such as corrugated infill plates [12][13][14], and interconnection ratio [15,16], were studied to overcome previously reported structural issues such as excessive demands on columns, detrimental impacts of openings on SPSWs, problems in the buckling of infill plates, and so on.…”