Development of Performance-Based Seismic Design in U.S.A

미국의 차세대 내진설계 개념의 발전 동향

The objective of this paper is to review the current state of practice in the seismic codes in the U.S.A. and to investigate its trend in the development of performance-based seismic design for the 21st century. This study is supposed to be eventually utilized as a basis material to establish the new seismic code appropriate in our country having the moderate seismic hazard. To do this, the history of the seismic codes in U.S.A. is first briefly investigated and then the critical review on the recent codes is made. Finally, the conceptual framework of the performance-based seismic design and the development of the guideline documents to implement this to the rehabilitation of existing building structures are introduced.