This study proposed new models for beam and column elements based on experimental results which enable to consider the strength degradation by long period loading. The performance evaluation of a 36 story model RC highrise building was conducted by adopting the proposed element models under long period ground motions.
The dynamic analysis was conducted using STERA 3D software by inputting El Centro 50 Kine, BCJ-L2, Osaka and Sannomaru ground motions. It was found that the performance of the building was within the safety criteria of design standard except that under Sannomaru ground motion. Under Sannomaru ground motion, 75% of beams were damaged and it may require a large amount of repair work. To avoid such severe damage, retrofitting of highrise building will be necessary.