Future of ISO23469: Seismic actions for designing geotechnical works

抄録

ISO23469 (International Organization for Standardization, 2005) provides guidelines for specifying seismic actions in the design of geotechnical works. This international standard is founded on past damage histories such as those during the 1995 Kobe earthquake. The central idea of ISO23469 was to introduce a performance-based approach. Now it is 18 years since its publication and the contents were reviewed by the Seismic Design Standard Committee, JSCE. It was recognized that this international standard can be further improved by covering such issues as (1) consideration of beyond-design-basis events, (2) restorability, (3) fault displacements and (4) effective use of strong motion data. This article briefly summarizes the author’s personal opinion on the future of ISO23469.