Nonlinear Static Analysis of Tube in Tube structure with Horizontal Irregularity with constant plan area

The construction and analysis of tall structures in India have been limited due to a lack of comprehensive knowledge and practical studies among engineers and researchers.This research paper focuses on investigating the behavior of a specific type of tall structure.The study specifically examines tubular structures with a constant plan area, introducing different plan irregularities in the horizontal direction by varying the positioning of shear walls in the modeling process.The research delves into understanding how tubular structures respond to wind loads and seismic effects, emphasizing the potential impact of shear lag in the normal-to-panels direction.Through performance-based analysis, particularly pushover analysis, the study evaluates the accuracy of results for a tube-in-tube structure concerning lateral loading.The analysis is conducted based on standards such as ATC-40 and FEMA-356, taking into account the ductility and non-linear performance of materials to depict the plastic rotation of structural components.The findings aim to provide more precise insights into the structural behavior of tall buildings, contributing to advancements in engineering practices in India.