Modeling of shear-flexure interaction in cyclic behavior of reinforced concrete shear walls

Modeling of the non-linear behavior of reinforced concrete shear walls with effective methods has gained importance, especially with the inclusion of the deformation design approach according earthquake codes, especially high-rise buildings and different structures. This situation necessitates the application of appropriate numerical modeling approaches that can represent the behavior modes of reinforced concrete shears walls under reversible cyclic loads, consisting of a combination of shear, bending and axial load effects. In the truss beam analogy method, which is one of these approaches, panel elements are formed based on the vertical and horizontal reinforcements in the reinforced concrete elements. By determining the angle value of the diagonal elements in the lattice panel elements with the horizontal, a model of the system is created with concrete bars and reinforcement areas in the relevant direction according to their impact areas. In the present study, the cyclic behavior of shear walls with different aspect ratios has been investigated with the fiber section model and lattice beam analogy modeling approaches. In this context, flexure effects and shear effects are evident, and numerical modeling approaches with shear walls were compared in terms of lateral load-displacement and section deformations.