Investigation On Effects of Nonlinear Static Procedures on The High Rise Buildings

Abstract

The objective of the paper is to evaluate and compare the structural behavior and response demands by non linear static procedures (NSP’s) such as Capacity Spectrum Method recommended in ATC40 and Displacement Coefficient Method recommended in FEMA356. So, for the investigation of the two methods, two of 3-dimensional high rise RC structures with different characteristics are analyzed for investigation. To obtain nonlinear behavior of the buildings under lateral loads, the base force-roof displacement graphs such as capacity curves are determined by pushover analysis. Then four different seismic hazard levels are considered and their corresponding structural responses are determined by using the two evaluations namely CSM and DCM and results are obtained. Comparing structural response quantities (such as maximum displacements) obtained from the NSPs for considered high-rise RC buildings, effects of different evaluations such as DCM and CSM in performance evaluations of the structures are comparatively investigated.