INFLUENCE OF WIND AND EARTHQUAKE ON A SINGLE MODIFICATION HIGH RISE STRUCTURE IN FOUR METRO CITIES OF INDIA

Reeti Sarkar, Ranjit Patil, Kalyana Rama J S

Abstract: Natural disasters are increasingly a major cause for concern for the construction industry, due to the widespread damage to property. In India in particular, cases of wind (esp. cyclone) and earthquake damage have been escalating rapidly, which requires counter measures in terms of earthquake and wind resistant design of buildings. While the Indian Standards provide a method for calculation of wind and earthquake loads respectively, very little indigenous data exists in terms of research and analysis of design solutions in the field - particularly a design which can offer combined resistance to both forces. In the present study therefore, the four metro cities of India - Mumbai, Delhi, Kolkata and Chennai - are selected, and their geographical parameters (in terms of earthquake and wind) is studied. A residential high rise building with single modification in building shape is designed and tested in the conditions of each of these cities using computational tool. The results in terms of both wind and earthquake resistance are tested against a regular rectangular building, in order to decide the dominating loads and effect of alteration of designs in the Indian housing construction industry. The study extends to results on mode shapes and frequencies under seismic loading.

Keywords: Wind Loads, Earthquake, Aerodynamic Shape, Mode Shapes, Tall Buildings

DOI: https://doi.org/10.15623/ijret.2016.0532024