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- MakaleYalnız künye2022Scopus SJRQ2Theoretical Models for Tie Bar Maximum Axial Force Demand in Composite Plate Shear Walls–Concrete Filled
Polat, Erkan
This paper presents theoretical models developed for the prediction of the maximum axial force demands of tie bars of planar composite plate shear walls–concrete filled (C-PSW/CF). In the development of the theory, a previously benchmarked finite element (FE) wall model was used with some modifications. The results from the FE models were used to demonstrate the formation of the tie bar axial force demands, passive lateral confining pressure, concrete confinement, effectively confined concrete core and to develop theoretical models for the prediction of tie bar maximum force demands. The proposed method accounts for various aspects of wall geometry such as horizontal and vertical tie bar spacings, steel plate thickness, and wall thickness. The predictions of the proposed theoretical models were compared with the predictions of FE analyses by performing a parametric study involving C-PSW/CF having different tie bar spacings, plate thickness, wall thickness, and wall depths. Past experimental research available in the literature were used to evaluate the significance of the theoretical model in predicting tie bar maximum axial force demands. Tie bar axial force demand due to the confinement effect is not currently considered in the design of tie bars and there is no theoretical approach in the literature that considers the effect of confinement on the tie bar axial force demand. The theoretical models presented in this study allow the determination of the maximum axial force demands due to the confinement effect on planar C-PSW/CF tie bars without the need for complex and costly numerical analysis.
AtıfScopus7WoS6OpenAlex6
İncele - MakaleYalnız künye2021Scopus SJRQ2Investigation of Tie Bars Axial Force Demands in Composite Plate Shear Walls—Concrete Filled
Polat, Erkan; Kenarangi, Hadi; Bruneau, Michel
Tie bars axial force demands due to concrete dilation and prying action were investigated through numerical studies. In the first part of this study, the Karagozian and Case Concrete model, which proved to provide reasonable in-plane flexural cyclic inelastic wall response while accounting for concrete dilation effect, was used to investigate the variation of confinement inside the infill concrete, the distribution of passive confining pressures at the steel–concrete interface, and the resulting tie bar axial force demands. Finite element analyses involving C-PSW/CF having different tie spacings, wall depths, and wall thicknesses were performed. In the second part of this study, the influence of plate local buckling on tie bar axial force demand was investigated and explained by prying action. A separate finite element study was performed to investigate the significance of prying action and equations were developed from free-body diagrams. The results showed the significance of the passive confining pressures due to concrete dilation, and prying action due to local plate buckling, on imparting axial forces in tie bars. Neither of these behavior are currently considered as design parameters for tie bars. The numerical analyses and results presented here are intended to provide useful insights and direction for the design and instrumentation of future C-PSW/CF experiments by the broader research community.
AtıfScopus9WoS8OpenAlex8İncele - DergiInternational Journal of Steel Structures