Earthquake Vibration Control Using Modified Framed Shear Wall

In past earthquakes, many buildings (Reinforced Concrete) have experienced either different types of damage or collapsed. On buildings which were collapsed by earthquakes various investigations have been carried out. As day by day seismic zones are changing the buildings which are earlier not prone to Earthquake, now came in severe zones, so for them this method of strengthening can be done easily. And for those buildings which was not constructed as per modern code procedure, by inspecting them according to their importance value mentioned in code (IS 1893 part1: 2002) we can in advance provide sufficient stiffness to those building to resist the lateral loads significantly by constructing exterior shear wall of adequate strength as per Code provisions. In this study a symmetrical in plan, building model of (G+8) storey is created in E-tabs software and is subjected to lateral load (earthquake load only).The building is subjected to different load combinations as per the code recommends and base shear, displacement, drift values, time period, forces in columns and beams were obtained at different storey level. Later on, the same building model is strengthened by providing external shear wall in parallel direction of building plan and connecting the external shear wall with the beams and columns of existing building using links of (25 mm dia. steel Bars of Fe415) and again the building is subjected to the different load combination, now it is found that displacement, drift value have been decreased to a reasonable extent which is within the permissible limit. Also this time those members which was found to be weak in carrying the lateral forces due to less stiffness earlier, are now strong enough in carrying lateral load. Then finally the outcomes and results are stated, comparisons are made and different graphs have been plotted and their relations have also discussed in detail.