Investigation of the Effect of Using Infilled Frames in Concrete Structures of the Medium Flexural Frame Under Idaanalysis

Abstract

Due to the complexity of designing masonry walls and the lack of a suitable model, infilled frames are usually considered non-structural members. They are ignored in structural analysis and design.However, ignoring the effect of infilled frames can be better from the point of view of strength, because these walls, with the additional resistance they give to the frame, have a positive effect on earthquake strength and thus the overall stability of the structure. But ignoring the infilled frames is not always right. In this way, the infilled frame increases the stiffness of the mid-fill frame, causing the frame to absorb a greater share of lateral force.In this study, the response of the structure to near and far area earthquakes in the case where the infilled frames effects are considered and these results are compared with the situation where the infilled frames effects are not considered. Incremental nonlinear dynamic analysis has been used for these studies.In general, it was observed that considering the infilled frames effects in structures increases the stiffness of the structure and reduces the ductility in them, and due to the fact that the area below the larger chart is obtained in this case, its use is more economical and recommended.