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Journal of Structural Engineering and Management Original Research

Study of High-rise Building with Varying Imposed Loads Condition for Lateral Load Excitation

  1. Aishwarya Didore N. Department of Applied Mechanics, Government College of Engineering, Chh. Sambhajinagar Aurangabad, Maharashtra, India
  2. R.S. Londhe Department of Applied Mechanics, Government College of Engineering, Chh. Sambhajinagar Aurangabad, Maharashtra, India

Abstract

The demand for land has risen, causing scarcity and leading to a significant increase in the construction of tall residential and commercial buildings. With limited land and a growing population, expanding horizontally is not feasible, making multistory buildings the solution. Urbanization has led to the construction of numerous high-rise structures, emphasizing the need for a thorough understanding and analysis of these structures. The present study aims to determine the critical design loads for a multistory building subjected to basic wind speeds of 55 m/s and earthquake zone classified as V, which are considered extreme conditions for load calculations. The analysis is conducted according to the earthquake loads specified in IS 1893:2016 and wind loads according to IS 875:1987 code. It provides a basis for determining the principal design loads for a specific building situated in a specific wind and earthquake zone. The analysis focuses on three high-rise structures with consistent side dimensions, namely G+20 (60 m), G+25 (75 m), and G+30 (90 m). The study also accounts for three live load cases (2 kN/m2 , 4 kN/m2 , and 6 kN/m2 ) for all models to evaluate their impact on lateral loads. The study compares the maximum displacements and story shears of the models. The results indicate that the magnitude of the wind load is greater than the earthquake load with an increase in height. The story shear of the building increases linearly in response to wind load, while the earthquake load results in a more or less constant shear after a certain extent. The findings also suggest that the building's behavior is influenced by seismic loads, but the wind loads remain consistent for live load cases considered.

Keywords

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