Comparison of Seismic Design of Building as per Generalized Approach by ASCE-7, and Seismic Hazard Assessment

Abstract

Earthquakes remain the largely damaging natural disasters, with their occurrences varying significantly across regions. The frequent seismic activity in certain areas highlights the elevated levels of hazard and risk. There is a critical need to integrate recent advancements in seismic analysis to better understand ground motion effects on structures. Seismogenic zones are categorized based on historical seismicity, geology, tectonics, soil types, and ground motion intensity, which may lead to underestimation or overestimation of seismic forces. To accurately represent the behavior of structures under seismic loads, a site-specific approach is essential. This study focuses on evaluating the seismic performance of multi-storeyed buildings following ASCE 7-16 provisions.

These paper shows a comparison for seismic design of building as per generalised approach by ASCE-7, and seismic hazard assessment. A site Utah, USA is selected, for which site classification is done as per the available soil profile of the location and site-specific response spectrum are developed. For the comparison of base shear two multistorey building are taken first building of G+3 and G+6. The analysis and design of building are done using E-tabs. Form the analysis it follows that the G+3 the generalised method predict base shear on higher side compared to site specific approach, and as the height of building increases i.e., for G+6 the Site-specific approach predict base shear on higher.