Pages: 1-15

Abstract

Deficiencies in linear static methods and nonlinear software development in the last decade on the one hand, and the rising issue of performance-based engineering (design of buildings based on different performance levels needed against different levels of earthquake intensity) in recent years, has resulted in many efforts in the design and evaluation of buildings based on displacement (deformation) and the direct use of nonlinear analysis to more precisely appraise structures against different levels of earthquakes. The objective of this study was to determine the correlation between MPA results and nonlinear dynamic analysis, taking into account their comparative comparison with US FEMA regulations, and to explore the similarities and differences between each of them. In this research, the Conditional Mean Spectrum was used to evaluate seismic parameters. The response spectrum and design spectrum are the basis of all earthquake load modeling in earthquake engineering. What spectrum to use for this is one of the most critical issues in earthquake engineering. Studies in recent years have revealed that the Conditional Mean Spectrum can be a more suitable target spectrum for earthquake selection. This spectrum gives the average value of the response spectrum at all periods, provided that a particular spectral acceleration happens at the desired period. The results of time history analysis in the form of intermediate displacement and drift diagrams for structures showed that in all cases, the displacements created in the structures are different from the conditional and standard scale method.