Effect of Core and Outrigger Structural System for Different Soil Type

Abstract

Tall building is more affected by lateral loads so design and analysis of high rise building is difficult so to minimize this effects of load now a day new different systems like outrigger system, belt truss system. In this present study outrigger system is used with rigid core of G+30 floor building is considered in which outrigger is provided at 30th and 15th floor of the building.  And analyze by considering Wind load and seismic loads are considered with three type of soil such as soil type I, soil type II and soil type III and analysis and 3D modeling is done in Etabs2015 software.  For comparison is done for building considering with outrigger and by considering without outrigger for all three soil conditions by considering parameters like story drift. This study concludes that the story drift for soil type II and soil type III is decreases by approximately 23% in building provided with outrigger and outrigger provided at top story will be more efficient