TY - JFULL AU - An Hong Nguyen and Chatpan Chintanapakdee and Toshiro Hayashikawa PY - 2010/4/ TI - An Investigation on the Accuracy of Nonlinear Static Procedures for Seismic Evaluation of Buckling-restrained Braced Frames T2 - International Journal of Civil and Environmental Engineering SP - 91 EP - 98 VL - 4 SN - 1307-6892 UR - https://publications.waset.org/pdf/10450 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 39, 2010 N2 - Presented herein is an assessment of current nonlinear static procedures (NSPs) for seismic evaluation of bucklingrestrained braced frames (BRBFs) which have become a favorable lateral-force resisting system for earthquake resistant buildings. The bias and accuracy of modal, improved modal pushover analysis (MPA, IMPA) and mass proportional pushover (MPP) procedures are comparatively investigated when they are applied to BRBF buildings subjected to two sets of strong ground motions. The assessment is based on a comparison of seismic displacement demands such as target roof displacements, peak floor/roof displacements and inter-story drifts. The NSP estimates are compared to 'exact' results from nonlinear response history analysis (NLRHA). The response statistics presented show that the MPP procedure tends to significantly overestimate seismic demands of lower stories of tall buildings considered in this study while MPA and IMPA procedures provide reasonably accurate results in estimating maximum inter-story drift over all stories of studied BRBF systems. ER -