The main purpose of this study is the evaluation of seismic performance of RC framed buildings with particular consideration of the effects of infill brick masonry. In Bangladesh, most buildings are constructed with masonry wall. These walls are not considered during structural design, and only linear static analysis is performed during this design. This study compares building performance both with, and without consideration of infilled wall using non-linear and dynamic analysis. Firstly, simulations of three laboratory test specimens, which were tested in Bangladesh, were performed through non-linear static pushover analysis. An equivalent diagonal strut, proposed in the state of the art research, used as a substitute structural element to represent infilled masonry. To observe the effect of infill masonry several models were developed for bare and infilled frames using the data obtained from the simulation. Non-linear pushover analysis and time history analysis were performed following the procedures prescribed in ATC-40/FEMA 273/356/440 EL and ASCE-41. It was found that masonry infill wall significantly affected building performance. When the effect of brick masonry infill was considered failure mechanisms changed. Therefore, proper consideration for masonry wall is proposed as an important feature for both new designs and also the assessment of historic and existing structures.
Keywords: Simulation, Infill Masonry, Pushover, Capacity, Time History