Rahimi, Reza1 and Liu, Yi2

1 Research Assistant, Department of Civil and Resource Engineering, Dalhousie University, 5248 Morris St., Halifax, NS, Canada, reza.rahimi@dal.ca
2 Professor and Department Head, Department of Civil and Resource Engineering, Dalhousie University, 5248 Morris St., Halifax, NS, Canada, yi.liu@dal.ca

ABSTRACT
This paper presents the development of a nonlinear finite element model using the OpenSEES program to simulate the in-plane response of concrete masonry infilled RC frames subjected to quasi-static cyclic loading. The nonlinear fibre element and shell element were employed to model the RC frame and the infill wall, respectively. The damage mechanics and smeared cracking model was adopted to simulate cracking pattern and failure mode of the infill. The zero-length element was applied to capture the interfacial behaviour between the RC frame and the masonry infill wall. Concurrent with the numerical study, an experimental program was conducted where five infilled RC frames were subjected to in-plane, quasi-static cyclic loading to failure. The infill opening and interfacial gap were implemented as parameters. The results of the experimental study were used to verify the model. It was shown that the model is capable of simulating the nonlinear behaviour of the masonry infilled RC frame and the effect of the interfacial gap and the infill opening were also adequately captured.

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