2nd Croatian Conference on Earthquake Engineering 2CroCEE

The effects of Out-of-Plane inter-storey drift loads on RC frame structures with masonry infill walls is still largely unresearched; likewise, its combination with In-Plane (IP) loads. So, to gain more insight into the matter, 3D micromodels were developed and calibrated against their IP and OoP experimental counterparts. The calibrated micromodels were then used to include a simultaneous IP and OoP loads. The simultaneous action was described by the angle $\alpha$ of the resultant force, ranging from IP to OoP loads. In the simulations, opening sizes were varied within the limits found in the literature and in combination with architectural standards. When the data from results was sorter, it presented a similar mathematical pattern across all models. Those patterns were then used to develop an equation for estimating load-bearing capacity of RC frames with masonry infill walls, with and without openings that had changing sizes and positions loaded under simultaneous action. The equation was conceptualized to be used by firstly obtaining IP load-bearing capacity of a bare frame, and subsequently multiplying it by a coefficient that includes opening type, size, position, and angle $\alpha$. The developed equations showed good correlation with the computational data gathered from the micromodels, but could not be verified against data from other researchers as there are still none that have dealt with such matter.