Performance of High Rise Steel Structure Against Seismic Forces for Different Soil Classes Using X-Bracings

The most suitable choices in improvement of steel structures against lateral loading are to provide steel bracing system. The use of steel bracing has potential advantage over other scheme like higher strength and stiffness, economical, occupies less space, adds much less weight to existing structure. In this study, the analysis of a I-section building for 20storey +2Cellars +1Ground floor and plan area 38mx50m and Box-shaped type of Building for 20storey +2Cellars +1Ground floor and area of 44mx44m with outside panels are provided with X - bracings and the interior panels of the building are without bracings and for Beams ISMB 400, Columns ISHB 450 and for Bracing ISLB 100 are modeled of this problem using STAAD Pro-2007 software. For this purpose for different soil conditions is taken into consideration and results are obtained in STAAD PRO. The buildings are located in all four zones from zone-1 to zone-5 region.