Abstract
Corrugated Steel Shear Wall (CSSW) is an efficient shear wall system, which has higher energy dissipation capacity, ductility and stiffness when compared to the Steel Plate Shear Wall (SPSW) with flat infill plate. Despite of these advantages, the ultimate load of CSSW is lower than that of SPSW. Various studies conducted to improve the cyclic behavior of CSSW revealed that increasing corrugation angle might enhance energy dissipation capacity and toughness of CSSWs. However, the ultimate load of CSSW was not improved by increasing the corrugation angle. Thus, the current study proposed new corrugated infill panel schemes to improve the ultimate load of CSSWs. To this end, Finite Element (FE) models were established using ABAQUS/Standard and verified with the experimental results from previous researches. The corrugation angle of the proposed plates was found based on a numerical investigation on seven CSSW FE models with the corrugation angle ranges from 30° to 120°. The FE results revealed that the model with the corrugation angle of 120 achieved highest ultimate load, energy dissipation capacity and toughness amongst the CSSW models. In addition, the ultimate loads, energy dissipation capacities and toughness of the proposed infill plates were up to 11.8%, 53.9% and 8.8% respectively higher than those of CSSW model with the corrugation angle of 120°. Furthermore, the proposed infill plates use up to 13.4% lower amount of steel compared to the corrugated plate with the corrugation angle of 120. Doi: 10.28991/cej-2021-03091678 Full Text: PDF
Highlights
Steel Plate Shear Wall (SPSW) is an economic and highly efficient lateral load resisting system suitable for steel structures in seismic hazard zones, due to its high strength, ductility, stiffness and energy absorption capacity
The results showed that the models with the corrugation angle of 120° gained the highest ultimate load, energy dissipation capacity and toughness compared to the corresponding models, regardless the thickness and the height-to-width ratio of the infill plate
This study proposed new infill plate designs to improve the cyclic behavior of Corrugated Steel Shear Walls (CSSW) as well as reducing the amount of steel used for infill panel
Summary
Steel Plate Shear Wall (SPSW) is an economic and highly efficient lateral load resisting system suitable for steel structures in seismic hazard zones, due to its high strength, ductility, stiffness and energy absorption capacity. Emami et al [9] performed an experimental study on the cyclic behavior of the trapezoidal CSSWs using two vertically- and horizontally- trapezoidal CSSW specimens and a SPSW specimen with flat infill plate. On basis of the aforementioned problem, this study proposed new infill plate configurations based on a combination of flat and trapezoidal corrugated plate to optimize the amount of material consumption and to achieve a reasonable ultimate load, energy dissipation capacity, toughness and stiffness. For this purpose, numerical models were developed and verified using the experimental results conducted by Emami et al [9].
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