Dynamic Seismic Evaluation of Irregular Multi Storey Buildings Using Bracing in Zone V as Per Is: 1893-2016
Lovneesh Sharma1, Sandeep Nasier2
1Lovneesh Sharma, M.Tech Student, Department of Civil Engineering, Chandigarh University, Gharaun, Mohali (Punjab), India.
2Sandeep Naiser, Assistant Professor Department of Civil Engineering, Chandigarh University, Gharaun, Mohali (Punjab), India.
Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 1057-1062| Volume-8 Issue-7, May 2019 | Retrieval Number: G5733058719/19©BEIESP
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Abstract: There are mainly 2 different types of irregularity in the structure, one is plan irregularity and another is vertical irregularity. The introduction of irregularity in the structure creates complex design and construction problems as irregular structures behave differently from regular structure. The response of such structure under seismic load depends on various factors and it is a dire need to understand the behavior of such irregular structure for the development of new design and construction technique through which the performance of the same shall be evaluated. Therefore, in order to understand the behavior of irregular structure with bracing system, the present study was conducted. For this, different types of irregularities were chosen for 12 storey building i.e. H-shape, L-shape and Oshape. The introduction of V-type bracing has its own significance in the present study. Heavy mass was placed at 6th floor and 9thfloor but not simultaneously. Dynamic seismic analysis in seismic zone V was adopted and it was carried out in Staad. Pro software. The evaluation of the irregular building along with the effectiveness of bracing was found out as it was the ultimate objective of the present study. It concluded that the lateral sway of the column shows very little variation when the heavy mass was transferred from 6thfloor to 9th floor as the value of displacement is almost same. But L-Shaped 12 storey building shows poor performance while resisting the lateral forces as it entails maximum value of displacement i.e.82.405 mm.With the introduction of heavy masses on floor, bending moment and shear force has increased 1.46 and 1.50 times respectively.
Keyword: Static and Dynamic Seismic Analysis, Staad. Pro.
Scope of the Article: Evaluation of Building Envelope Systems under Structural and Environmental Loads