Evidence of extreme events in wind-induced normal stress of the columns of low- and medium-rise building structures

¹ Department of Physics, Centre for Nonlinear Science and Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed University - Thanjavur 613 401, India
² Turbulence and Flow Control Laboratory, School of Mechanical Engineering, SASTRA Deemed University Thanjavur Tamilnadu 613 401, India

^(a) chandru25nld@gmail.com (corresponding author)

Received: 30 June 2021
Accepted: 19 October 2021

Abstract

We designed models for low- and medium-rise building structures with square and rectangular plans and tested the wind-induced normal stress of the building columns. We demonstrate the structures' normal stress response due to the wind load is non-Gaussian and shows evidence of extreme events, which are four to seven times larger than the mean standard deviation. We have estimated the probability distribution function to corroborate the long-tail nature of the extreme events, and randomness of the events is confirmed by plotting inter-event intervals and return maps. Further, the number of extreme events is calculated, which validates the exponentially decaying fit as a function of the number of standard deviations.