NEW SEISMIC ISOLATION SYSTEM FOR IRREGULAR STRUCTUREWITH THE LARGEST ISOLATION BUILDING AREA IN THE WORLD

摘要

This paper introduces the design, analysis, tests and application of a new isolation system used in irregularstructure, also briefly introduces the recent research, and development on seismic isolation of civilbuildings in China.A very large platform (2 stories RC frame) with plane size 1500m wide and 2000m long was built to coverthe city railway communication hub area. About 50 isolation house buildings (9 stories RC frame) with480,000 M2 were built on the top floor of platform. A new advanced isolation system namedStoried-Isolation was used to ensure the seismic safety for this irregular structure with the largest isolationhouse building area in the world. This new isolation system have been used widely in China.There are over 400 buildings with seismic isolation have been built in China until 2003. This paper willintroduce the recent research, and development on seismic isolation of civil buildings in China, includingthe tendency of application on seismic isolation, different isolation systems, different design level beingused, design codes, application status and examples of application. Also the paper makes discussion ofsome problems on the future development of seismic isolation in China.