The Effect Of Infill Waiis On The Seismic Behavior Of Reinfroced Concrete Frames

Infilled frame is a very common structural system used in the buildingstructures.Existing research indicates that the infill walls have great effect on thecapacity,stiffness and deformation behavior offrames.It is not always safe to ignore the effect of the infill walls,so it is necessary to take the effect of the infill walls on the frames into account when doing the seismic design of the frames. Although a lot of research about the behavior of the infilled frames have been done by many scholars all over the world, some problems are still to be solved.Main research work in this thesis is summarized as follows:1. It is necessary to propose a reasonable and effective simplified model to analyze the effect of the infill walls on the frame.In this thesis,first,existingmodels are summarized and compared. For the infill walls without openings, using a framework text - filled with masonry shear walls model, based on sap2000 structural analysis software, consider the number of filled wall, floor layout and locations under different circumstances, the establishment of a reasonable structure model.2. Paper on the wall filled with the framework of the structure of the natural cycle value method was discussed. Through modal analysis shows that filled the wall of the structure by adding the natural cycle of, and to standardize the design method were compared. Outlines the walls were filled with the layout of the structure and number of the impact of the natural cycle, come in different fill rate of filling the wall of the structure of the cycle of trends. Given the different circumstances of the wall structure filled with the natural cycle of reference for the proposed reduction factor. And through the natural cycle of observation, recognizing that the wall filled with torsional rigidity of the structure of the impact.3. Vibration of the structure of a response spectrum analysis, through multiple floors of the largest model of displacement and the level of displacement between the analysis and comparison shows that filled the wall of the structure of the impact of anti-lateral stiffness, and found in the wall filled with Under the influence of various inter-layer structure of the largest displacement layer on the model of the largest displacement of the floors and floors of the largest displacement of a time-analysis, more accurately detailed response in the wall filled under the influence of these floors of the displacement and acceleration over time Changing circumstances.4. Filler wall stiffness of the structure makes the existence of the natural cycle decreases, so that role and the level of the building on the increasing role of the earthquake. Based on the model proposed in this paper, through the mode of timely response spectrum-analysis, the structure of the shear layer to the analysis and comparison, reflecting the wall of the structure filled with the impact of the earthquake, and the two calculation methods to come to the conclusion Comparison.