نوع مقاله : علمی - پژوهشی
موضوعات
عنوان مقاله English
نویسنده English
Squat walls are very common in low-rise construction and at lower levels of tall buildings (e.g., parking level walls or basement walls). They can be also found in long walls with perforations due to window and door openings, resulting in wall segments between openings. They show significant amount of shear deformation as compared to bending deformation. Shear strength usually governs the design of such walls. In the modeling of these walls, these elements are modeled as members with bending behavior, while squat shear walls have shear behavior, and paying attention to the bending and shear interaction in these walls, increases the modeling accuracy. In this research, while considering the interaction of bending and shear behavior in the modeling of squat shear walls, the effect of various factors in the behavior of these walls was investigated such as wall aspect ratio, axial load, vertical and horizontal reinforcement ratio, boundary elements effect, reinforcement concentration in the boundary element. In this study finite element software Opensees and nonlinear static analysis method are used. The results of the investigation show that decreasing the wall aspect ratio, the shear strength and stiffness of the wall increase, but its ductility decreases. The presence of axial load and boundary elements increases the shear strength and the percentage of energy absorption. The concentration of reinforcement in the boundary element increases the shear strength, the yield surface and the percentage of energy absorption. In general, by predicting the appropriate conditions of the wall, including the appropriate aspect ratio and the sufficient percentage of the reinforcement and predicting the boundary elements, it is possible to increase the ductility, stiffness and shear resistance of these walls.
کلیدواژهها English
