Nonlinear Analysis Methods for Reinforced Concrete Buildings with Shear walls

摘要

Proper modeling of the shear walls is very important for both linear and nonlinear analyses of building structures. In linear analyses of structures, Reinforced concrete (RC) shear walls are modeled utilizing different techniques either using shell elements or combination of frame elements. In the nonlinear analyses, the nonlinear material model of mid-pier frame is generally based on plastic hinge concept located on the plastic zones at the end of the structural elements or distributed along the member span length. The nonlinear behavior of the shell elements is generally modeled using multi layer shell element with layered material model. In this approach, the concrete and the reinforcement inside the structural elements are modeled respectively with different layers. In this study, different approaches for linear and nonlinear modeling of the shear walls in structural analyses of buildings are studied and applied to RC building with shear walls. The analyses results of different approaches are compared in terms of overall behavior of the structural systems.