Call For Paper Volume:7 Issue:8 Aug'2020 |

Dynamic Analysis of outrigger structural system in tall building

Publication Date : 30/12/2017

DOI : 10.21884/IJMTER.2017.4403.JZEKK

Author(s) :

Alok Rathore , Dr. Savita Maru.

Volume/Issue :
Volume 4
Issue 12
(12 - 2017)

Abstract :

This research work deals with the study of behavior of tall building having multi-outrigger structural system. This structural system is analyze under the action of dynamic loading. The outrigger structural system include concrete outrigger stiff beam that connects the central core to exterior column and belt truss ties all the external columns on the periphery of structure again concrete outrigger beam connect these belt trusses to central core of structure thus restraining the exterior columns from rotation. In present study, comparison of models were done by considering two criteria, firstly changing the depth of outrigger beam and belt truss from one storey to two storey and secondly placing the outrigger system at different position along the height of building. 57 models were developed by considering these criteria and that were analyzed by using ETABS v2016 CSI software. This work includes the value of lateral displacement and storey drift parameter. Results from analysis show that there is reduction in lateral displacement about 23.93% when outrigger system is placed at 30th storey level in model having two storey depth of outrigger system for single outrigger structural system. The lateral displacement was further reduced to 38.53% when second outrigger system was placed at 10th storey level in same model for double outrigger structural system. When comparing the results of storey drift parameter, there is reduction in storey drift value of about 69.54% , when outrigger system are placed at 30th storey and 50th storey in model having two storey depth of outrigger structural system.

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Dynamic Analysis of outrigger structural system in tall building

December 23, 2017