Seismic Behaviour of a Multi-Storeyed Reinforced Concrete Irregular Building with Outrigger Belt Truss System
Premalatha J1, Mrinalini M2
1Premalatha J, Professor, Department of Civil Engineering, Kumaraguru College of Technology Coimbatore (Tamil Nadu), India.
2Mrinalini M, PG Student, Department of Civil Engineering, Kumaraguru College of Technology, Coimbatore (Tamil Nadu), India.
Manuscript received on 13 December 2018 | Revised Manuscript received on 22 December 2018 | Manuscript Published on 30 December 2018 | PP: 181-187 | Volume-8 Issue-2S, December 2018 | Retrieval Number: 100.1/ijeat.B10441282S18/18©BEIESP
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Abstract: Lateral forces in tall structures produce structural and non-structural damages. In tall structures lateral forces are induced and moments are created, which is very large when compared to gravity load and these moment leads to overturning of the structure. The outrigger system is one of the most common and efficient system that can be used to improve the performance of tall buildings under wind and seismic forces. An Outrigger is a horizontal projection attached to any member and helps in increasing its stability. The provision of outrigger trusses helps in connecting the core wall of the building to external columns along the height of the structure and they act like spreaders. In the present work, a 7×7 bay RC irregular building is taken for the study and its performance with different configuration of belt truss system under wind forces and seismic forces is investigated. The response of the RC frame under Time history analysis, Response spectrum analysis, due to seismic forces found out using IS 1893 (Part-1): 2002, and wind forces are found out for the 30 storey RC model frame with various configuration of belt truss systems using the ETABS software. The performance of the frame under lateral loads such as maximum storey displacements, maximum storey drifts were found out.
Keywords: Time History Analysis, Response Spectrum Analysis, Storey Drift, Storey Accelerations.
Scope of the Article: Behaviour of Structures