Numerical simulations of non-ductile RC frames with in-filled brick panel under cyclic loading

In this study, a computation code is developed to simulate the nonlinear dynamic behaviors of reinforced concrete frames containing of different types of brick wall panel. The finite element method (FEM) was adopted to built up the numerical analysis procedure. Two-dimensional solid elements are used to model the concrete and brick and mortar materials, and truss elements are used to model the reinforcement. The Joint effect between the mortar and brick is modeled by the Joint element. The nonlinear bond-slip relation between reinforcement and concrete is considered in the analysis. An equivalent strain model that can characterize the nonlinear loading and unloading behavior of concrete material is applied. To simplify the analysis of cracked element, the smear crack model and associated damage theories were used for the material points satisfying failure criteria. The accuracy and effectiveness of this simulation code were verified by the agreement between numerical prediction and experimental result which tested at NCREE on Taiwan. The hysteretic of load-displacement response for a RC frame can be calculated so it is very helpful for the seismic analysis and retrofitting design.