Seismic Performance of Steel Structures Designed By Response Spectrum Analysis Procedure

Abstract

This research studies seismic performance of steel structures designed by response spectrum analysis procedure that in the seismic design standard for building DPT 1301/1302-61 has improved Response Spectrum Analysis method (RSA) to modified response spectrum analysis method (MRSA). The MRSA is an improvement on the shear calculating to be safe that has obtained from concrete reinforcement high rise building research. However, the MRSA method was not studied for use in steel buildings.
The objective of this study is to investigate adequacy of seismic demands obtained from RSA procedure in designing steel structures. This research considers Steel Special Concentric Braced Frame (3, 6 and 9-story). The studied buildings are located in Mueang district, Chiang Mai province that is designed by RSA method from DPT 1301/1302-61, DPT 1304-61 and AISC 360-16. And then analyze by Nonlinear Response History Analysis method (NLRHA). To evaluate performance of structures to resist seismic and consider story drift, steel column buckling and resisting force for connection design. The results show that the Steel Special Concentric Braced Frame designed by RSA can resist the seismic load.