Authors : M. Yasar Kaltakci , Hasan Husnu Korkmaz and Ali Koken
Abstract: Frame systems are commonly used in structural design. In the design and analysis of these types of structures, beams and columns are essential. Since no practical and generally recognized method has yet been developed, non-structural components such as, architectural walls are not usually taken into consideration in the analyses. On the other hand, the real structure may exhibit a different behavior than that of bare frames under lateral loadings such as earthquakes. This study describes the use of finite element method to asses the contribution of the infill to the behaviour of infilled steel frames. The influence of masonry infills on the behaviour of steel frames is studied experimentally and analytically by using a finite element model to simulate the behaviour of infilled steel frames subject to lateral loads. New material models are proposed for masonry infill (no plaster) and plastered masonry infills. The model is verified by comparison with laterally tested infilled frames. The validity of results is checked with the experimental results. Steel framing is chosen, due to fact that its mechanical behaviour is rather well known with respected to reinforced concrete structure. Besides the fully infilled steel frames, partially infilled frames are also tested and analyzed. The infill is modeled with, well-known, diagonal strut analogy also with shell elements. A new modeling proposal, with the use of nonlinear springs is also introduced in the study. The proposed analyze method is based on adjustment or calibration of Young Modulus of infill frame material. At the results, experimental lateral load vs deflection curves are compared with analytical ones.
M. Yasar Kaltakci , Hasan Husnu Korkmaz and Ali Koken , 2007. An Investigation of the Behaviour of Steel Frames with Masonry Infills under Lateral Loading . Journal of Engineering and Applied Sciences, 2: 930-943.