Essay Examples on College of Mount Saint Vincent

Performance-based seismic engineering

Introduction Performance based seismic engineering is the modern approach to earthquake resistant designs The promise of performance based seismic engineering PBSE is to erect structures with predictable seismic performance 1 PBA performance based analysis generally uses the pushover analysis which is then verification by nonlinear static procedures like Coefficient Method Capacity Spectrum Method N2 Method etc 2 Procedures from this category accrued from the philosophy of performance based seismic design PBSD recognize the fact that structural damage is mainly determined by lateral displacement or drifts 3 One of the NSPs are consisted of Capacity Spectrum Method CSM suggested by Freeman and collaborators 1975 and 1998 4 and implemented in ATC 40 guidelines 1996 U S Army 1986 ATC 1996 FEMA 2000 Then this method was modified by Fajfar in 1999 5 The use of shear wall had begun on the eve of 20th century The problem for the structural engineers then was to find the optimum design frame for tall RCC buildings and the location of shear walls to act against earthquakes 6 The solution is strengthening and adding more stiffness of the critical structural members to reduce the damage against lateral loads 7

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