Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 53 5 2021 07 23 A Macro-element Model for Nonlinear Analysis of Masonry Structures A Macro-element Model for Nonlinear Analysis of Masonry Structures 2003 2022 4211 10.22060/ceej.2020.17278.6510 FA Behrooz Yousefia Tarbiat Modares University Masoud Soltani Mohammadi Tarbiat Modares University Journal Article 2019 10 24 In this study, the macro modeling of masonry structures is used based on homogenous models, and an equivalent planar-frame model-based analytical method is proposed for masonry structure assessment. The equivalent frame model is a simple applicable approach that is almost accurate and time-saving. Also, it holds proper convergence compared to the exact analytical and experimental methods. In the formulation of beam-column elements, the distribution of nonlinearity is chosen. The nonlinear constitutive model is simulated in the cross-sections and also along the length by the usage of fiber elements. For the consideration of shear behavior, bed joint sliding mode of failure, and diagonal tension mode, a smeared crack approach-based interface element is developed in the MATLAB framework. To consider the seismic assessment of masonry walls, constitutive models are considered according to Instruction for seismic rehabilitation of existing buildings (No. 360) through a subroutine in the main program. The accuracy of the suggested approach is verified through a comparison of experimental results and existing analytical methods. In this study, the macro modeling of masonry structures is used based on homogenous models, and an equivalent planar-frame model-based analytical method is proposed for masonry structure assessment. The equivalent frame model is a simple applicable approach that is almost accurate and time-saving. Also, it holds proper convergence compared to the exact analytical and experimental methods. In the formulation of beam-column elements, the distribution of nonlinearity is chosen. The nonlinear constitutive model is simulated in the cross-sections and also along the length by the usage of fiber elements. For the consideration of shear behavior, bed joint sliding mode of failure, and diagonal tension mode, a smeared crack approach-based interface element is developed in the MATLAB framework. To consider the seismic assessment of masonry walls, constitutive models are considered according to Instruction for seismic rehabilitation of existing buildings (No. 360) through a subroutine in the main program. The accuracy of the suggested approach is verified through a comparison of experimental results and existing analytical methods. https://ceej.aut.ac.ir/article_4211_e3b0ab92511ce1f46960bed57f65f532.pdf