ENHANCINGLATERALLOADRESISTANCEIN HIGH-RISE BUILDINGS USING OUTRIGGER- BELT TRUSS SYSTEMS

Abstract

High-rise buildings are becoming necessary parts of contemporary cities due to urbanization and 
limited land availability, requiring sophisticated engineering solutions to handle the substantial 
lateral pressures brought on by seismic and wind activity. Outrigger systems have become a viable 
way to improve the structural performance of tall structures by carefully connecting the central core 
to the outer columns. In this work, a 40-story high-rise structure with belt trusses and a core
outrigger system under lateral loads is parametrically analyzed using ETABS software. According to 
the analysis, the building's height has a direct impact on the quantity and positioning of outriggers. 
Notably, 0.4 H from the bottom of the structure is the ideal place for a single outrigger with a belt 
truss, optimizing lateral load resistance and reducing deflections. These results advance high-rise 
structural engineering and give useful guidance for attaining maximum efficiency in tall buildings by 
delivering crucial insights into the strategic design and deployment of outrigger systems.