EFFECT OF SENSITIVE ANALYSIS ON MULTISTOREY BUILDING WITH DIFFERENT CONFIGURATION OF STRUCTURAL ELEMENT
Author(s):
Chauhan Nilesh Chhaganbhai, P. R. Barbude, P. V. Muley
Keywords:
Damage, earthquake engineering, Performance Based Design, Safety
Abstract
The preference for the mixed-use of buildings has led to a paradigm shift in the way buildings are designed, and their geometries are determined. A podium-tower building configuration that caters for both commercial and residential functionalities has become a popular form of building construction in many metropolitan cities around the world. Horizontal offset buildings constitute a class of structures that are particularly prone to in-plane floor deformation and torsion occurring simultaneously. It is found from previous studies that podium can impose significant differential restraint on coupled tower walls, these walls displace under lateral loads contributing to the generation of in-plane strutting forces in podium floors leading to its un-conservative design. So, the scope of this study is to understand the realistic behaviour of such structures under lateral loads considering the backstay effect as per IS: 16700(2017). Also, study of behaviour of structure in modified modifier of upper bound. The present work focus on the effect of podium structure of single tower structure connected by a common podium at the interface level under seismic load. For this purpose, the simulation model with different arrangement of wall and beam/slab at podium level is created in the ETABs and it is analysed for the response spectrum method. In this study, the effect on the top displacement of the tower connected with podium structure under response spectrum method of analysis is observed. The backstay forces that are developed to resist the lateral overturning actions at the interface when the lateral horizontal forces are transferred from the tower to the podium are studied. The unfavorable effect of podium on the shear force distribution at and above the interface level of the structural wall is observed.
Article Details
Unique Paper ID: 162282

Publication Volume & Issue: Volume 10, Issue 9

Page(s): 77 - 89
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