Abstract: When high rise buildings exposed to high winds are located in low-to-moderate seismic areas, such as Mumbai, wind forces can dominate over seismic demand. Current code specifications cope with these two sets of actions individually, largely relying on the dominant action. A new design approach, based on structural performance, is hence suggested and desirable when facing the risk involved with both hazards.
In recent years, there has been a revived and growing interest in reconsidering and updating the standard specifications of the codes, introducing new analytical methods that are performance based. Adapting emerging methods, such as performance based design (PBD), will reliably forecast the behavior of the structure with an higher degree of reliability, risk assessment, safety and optimization.
The present work aims, first, to conduct a preliminary analysis to describe the dominant action between the wind and the earthquake, and then to find the required, relevant, ductility demand. Further, by using a FEM code (Midas Gen), the ductility from the actual structure is evaluated and compared to the preliminary study and, finally, the saving in terms of weight of reinforcement between the ductility detailing required for code standards and PBD is assessed.
Keywords: High wind, Low to moderate seismic force, Dominant action, Performance based design, Conceptual PBD, Ductility.
Title: PERFORMANCE BASED DESIGN OF TALL BUILDINGS WITH RESPECT TO HORIZONTAL EFFECTS
Author: Anupama Kamani, Antonio Capsoni
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
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