Performance Analysis of outrigger structural systems for Tall Building

Kamath, Kiran and Divya, N and Rao, Asha Udaya (2012) Performance Analysis of outrigger structural systems for Tall Building. In: National Conference on Advanced Trends in Civil Engineering, 2nd and 3rd March, Karpagam University, Coimbatore 641 021, Tamil Nadu.

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This paper presents a study on the performance analysis of outrigger structural system for tall buildings. An investigation has been performed to examine the behavior of various alternative 2D models using ETABS software for reinforced concrete structure with central core wall with outrigger and without outrigger by varying the relative flexural rigidity (EIo/EI), (where E is the modulus of elasticity of the core and the outrigger concrete, Io is moment of inertia of outrigger and I is moment of inertia of core) from 0.25 to 2.0 with step of 025. Also the position of outrigger has been varied along the height of the building by considering a parameter relative height of outrigger, Hs/H (where Hs position of outrigger from base and H is the total height of the building), from 0.975 to 0.4. The parameters discussed in this paper include lateral deflection, peak acceleration for static and dynamic analysis for a 2-dimensional model for various values of relative rigidity and relative height. The wind and earthquake loading is considered as per relevant Indian standards. From the analysis it is noticed that the optimum position of the outrigger is about the mid height of the structure for the structural system analyzed.

Item Type: Conference or Workshop Item (Paper)
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 01 Apr 2013 09:47
Last Modified: 01 Apr 2013 09:47

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