Abstract
The effects of different parameters on steel plate shear wall (SPSW) are investigated. The studied parameters are thickness of plate, location of the opening, thickness of diagonal stiffeners, and thickness of circular stiffener. Load-carrying capacity of the SPSW is studied under static load using nonlinear geometrical and material analysis in ABAQUS and the obtained simulation results are verified. An artificial neural network (ANN) is proposed to model the effects of these parameters. According to the results the circular stiffener has more effect compared with the diagonal stiffeners. However, the thickness of the plate has the most significant effect on the SPSW behavior. The results show that the best place for the opening location is the center of SPSW. Multilayer perceptron (MLP) neural network was used to predict the maximum load in SPSW with opening. The predicted maximum load values using the proposed MLP model were compared with the simulated validated data. The obtained results show that the proposed ANN model has achieved good agreement with the validated simulated data, with correlation coefficient of more than 0.9975. Therefore, the proposed model is useful, reliable, fast, and cheap tools to predict the maximum load in SPSW.
Highlights
In the current seismic resistant design, building structures are allowed to exceed their elastic limit under severe earthquake excitation
When the circular and diagonal stiffeners are used in the steel plate shear wall (SPSW), the energy absorption is 14% more compared with conditions in which the opening and the stiffeners are not considered
There are a number of common activation functions in use with artificial neural network (ANN) such as step function, tan-sigmoid function, and log-sigmoid function
Summary
In the current seismic resistant design, building structures are allowed to exceed their elastic limit under severe earthquake excitation. Experimental studies have been carried out on the thin steel plate shear walls by Caccese et al [1], Driver et al [2], and Lubell et al [3]. When the circular and diagonal stiffeners are used in the SPSW, the energy absorption is 14% more compared with conditions in which the opening and the stiffeners are not considered. The effect of thickness of plate, location of the opening, thickness of diagonal stiffeners, and thickness of circular stiffener on the load-carrying capacity and absorbed energy is investigated. For developing of the proposed model, the input parameters are thickness of plate (mm), thickness of ring (mm), thickness of stiffener (mm), and location of opening (up, middle, and down) and the outputs are absorbed energy and maximum load
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