Lateral Stability Analysis of High Rise Structure with variation of plan configuration with respect to height and the Effect of Outrigger and Belt Trusses Systems
Syed Ammar Ahmed Maaz,  Mohd Mubasheer Shazeb
The outrigger and belt truss system is one of the most efficient systems used to effectively control the excessive drift due to lateral load, so that, during small or medium lateral load due to either wind or earthquake load, the risk of structural and non-structural damage can be minimized. For high-rise buildings, particularly in seismic active zone or wind load dominant, this system can be chosen as an appropriate structure. This paper studies the efficient use of outrigger and belt truss system for high-rise concrete building subjected to wind or earthquake load. Seven 44-storey models of outrigger and belt truss system are subjected to wind and earthquake load, analyzed and compared to find the lateral displacement reduction related to the types of outrigger and belt system. The analysis has been carried out to study the effect and performance of outrigger system in 40-storey building. The outrigger system is provided at different levels along the height of the building. The depth of the Outrigger and belt trusses is equal to the height of the typical story and maintained same in all the models. The key parameters discussed in this paper include lateral deflection, storey drifts, base shear and fundamental time periods. Loads are considered as per Indian Standards IS: 875(Part1)-1987, IS: 875(Part2)-1987, IS: 875(Part3)-1987 and IS: 1893(Part-1) - 2002. The modeling and analysis were performed using finite element software ETABS 16.
Keywords- Outrigger and belt truss system, lateral load, lateral displacement, storey drifts, base shear and fundamental time periods
Cite this Article
Syed Ammar Ahmed Maaz,  Mohd Mubasheer Shazeb,   "Lateral Stability Analysis of High Rise Structure with variation of plan configuration with respect to height and the Effect of Outrigger and Belt Trusses Systems"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.7, Issue 3, pp.865-872, September 2019, Available at :http://www.ijedr.org/papers/IJEDR1903148.pdf