Assessment on Human Comfort Criteria of Tall Building under Dynamic Wind Loading

Abstract

The tall, light, flexible buildings may have large oscillating motions induced by wind or other causes that affect the comfort of the occupants. Wind induced motion in buildings may result in excessive vibrations such vibrations can cause discomfort conditions for occupants or damage to non structural elements. So it is essential to analysis the dynamic behavior of the tall building under the wind excitation which influences the human comfort. The purpose of present study is to anysied the range of human perception criteria associated with human comfort that is applied for serviceability limit state design. The design criteria were proposed based on the subjective perception test. The guideline for evaluating the acceptability of wind-induced tall buildings motions was defined by the expected value of motion perception acceleration. In this Project, human comfort condition of a tall building under wind excitation is assessed using estimation of peak acceleration by using Indian standard code IS 875(part3) :2015. Considering Four different Framed Tubes tall building circular structure having a G+20, G+30, G+40, and G+50 with different condition i.e. Normal Slab, Secondary Beam, Waffle Slab & Ribbed Slab are taken. Typical circular floor is 50 m in diameter and symmetrical in plan in both major directions. Then using ETABS-2013 software maximum displacement is evaluated using dynamic wind analysis of building by applying the gust factor method. With the help of maximum Displacement Peak acceleration will be calculated using is IS-875(part3); 2015 for different Framed Tubes structure conditions and modes of building. The peak acceleration obtained in the analysis is compared with the reference data given by Smith. S.B. and Coull book and human comfort perception level is calculating for Indian tertiary of the described location of India from which assessment of effective tall building under dynamic wind load is anysied.