• Kartikkumar Prajapati
• Prof. Roshni John

Multistoried high-rise buildings have become an essential part of cities which comprises of structural steel, concrete or composite construction. The use of structural steel in high-rise buildings has been quite popular from many decades due its many advantages. The most widely used and simplest form of structural system being rigid frame system, has certain drawbacks. With the increase in height of structure, the lateral deflection due to wind and seismic forces increases which concerns the strength and serviceability criteria. Many advanced techniques are developed to deal with this issue of lateral deflection in high-rise buildings but they often involve complex analysis and its construction is costly. In this thesis a structural system termed as ‘Box configuration’ is proposed to be used. Three models Ground plus 10, 15 and 20 respectively are designed for only vertical loads where rolled steel I-beam sections are used for primary and secondary beams. Box configuration means replacing the outer periphery beams of structure on selected storeys with a heavier beam than required such that it forms a box like formation in the elevation. The number of box configurations formed depends of numbers of storeys where outer periphery beams are replaced. Wind and seismic forces were then introduced on the models with and without box configuration and a comparison was made focusing on the maximum lateral deflection that each model undergo. With increase in number of box configuration by one each, an approximate 6 percent reduction in maximum lateral deflection was recorded. For all the three models of varying heights, above 20 percent reduction in lateral deflection was observed when maximum number of box configuration possible was adopted. Thus, adopting box configuration in rigid frame steel structures provides reasonably good amount of lateral stability without use of any complex structural system.

Box configuration, lateral deflection, rigid frame, steel structure, Multistoreyed

"Analysis of multi storeyed rigid frame steel structure with box configuration", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.242-250, March-2019, Available :http://www.jetir.org/papers/JETIRAS06042.pdf

"Analysis of multi storeyed rigid frame steel structure with box configuration", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp242-250, March-2019, Available at : http://www.jetir.org/papers/JETIRAS06042.pdf