The IUP Journal of Structural Engineering
Seismic Analysis of Multi-Storey Irregular Building, Including Effect of Shear Wall and Bracing System

Article Details
Pub. Date : Jan, 2022
Product Name : The IUP Journal of Structural Engineering
Product Type : Article
Product Code : IJSE10122
Author Name : Aishwarya Pujari* and Tejas D Doshi**
Availability : YES
Subject/Domain : Science and Technology
Download Format : PDF Format
No. of Pages : 12

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Abstract

In recent years, the application of shear wall system in a Reinforced Concrete (RC) building is widely used to minimize seismic consequence. Furthermore, concentrated steel bracing systems are used in steel structure buildings for the same reasons. Both the systems have a significant impact on the structural performance. Although both systems are used for the same reasons, their effect shows unequal variations and behavior against seismic load. This is the reason that the values of response factors are miscellaneous for varying structural systems. The paper investigates the behavior of RC structures considering the shear wall and steel bracing systems. A comparison is made on asymmetrical plus shape structure, and analysis is done using Response Spectrum Method (RSM) on G+7 RC frame structures. Shear wall and bracings are placed at different locations and frames are modeled using ETABs software. Parameters like base shear, displacement, storey drift, time period and storey acceleration are compared in terms of stiffness and strength.


Description

The height of construction is relative and cannot be described in absolute phrases either in terms of the peak or range of stories. But from a structural engineer's point of view, tall or multi-storied buildings have distinctive features, as they are subjected to lateral forces due to wind and earthquake, which play a significant role in their structural design. To securely deliver gravity and lateral masses, tall buildings require conceptual planning, approximation analysis, initial layout and optimization. Strength, serviceability, stability and human comfort are the layout criteria. It is quite difficult to assume the magnitude, location and time of an earthquake. The structures are suitably designed for normal masses along with loads such as dead, live, wind, etc. which may not be immune to earthquakes.


Keywords

Shear wall, Bracing system, Seismic load, Base shear, Drift, Displacement