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Rational method for analysis and design of steel plate walls Kharrazi, Mehdi Hadj Karim


A simple rational method is developed in this study to simulate the shear and bending behaviours of Steel Plate Wall (SPW) systems, and is referred to as the Modified Plate-Frame-Interaction (M-PFI) model. The model can determine force and displacement values that corresponded to pre- and post-critical buckling state, post-yield state and ultimate capacity of individual panels. Using the M-PFI model, design requirements of the beams and columns were determined. A new mathematical formulation was presented to determine the angle of inclination of the tension field. The M-PFI concept was applied to a proposed hysteresis model, to better predict the behaviour of the SPW under cyclic loading conditions. Two Ductile Steel Plate Walls (DSPWs) and a Steel Frame (SF) were tested under cyclic loading. Also shake table tests were conducted on DSPW and SF specimens. Based on experimental outcomes, the SPW system was found to be an excellent lateral load resisting system. Using Finite Element (FE) model, the response of the specimens was simulated. From comparing numerical outcomes with test results, it was concluded that FE method is an appropriate technique to model the response of an SPW. To evaluate the effectiveness of the method, outcomes using the M-PFI method were compared to experimental results from a number of SPWs tested at different universities and research institutes. A parametric study was also performed using the M-PFI method, where outcomes of this study were compared to outcomes obtained previously by other researchers using the FE method. The M-PFI model was found to have the ability to predict the initial stiffness, post- yield stiffness and yield point of the infill plate, as well as predict the failure mode of the system, including any deficiency which might cause failure. To demonstrate implementation of the M-PFI method in the design of an SPW system, three SPWs of different heights were designed. A step-by-step SPW design procedure was presented and discussed. Evaluation of the M-PFI design methodology was performed using the FE method and, as a result, the M-PFI method was found to be an effective method in the design of SPW systems.

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