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CURRENT RESEARCH ACTIVITIES AT KAIST GEO-CENTRIFUGE CENTER FOCUSING ON SOIL-FOUNDATION-STRUCTURE INTERACTION UNDER SEISMIC LOADING

Session: Physical and Numerical Modelling / Modélisation physique et numérique

Heon-Joon Park, KAIST (South Korea)
Jeong-Gon Ha, KAIST (South Korea)
Jun-Tae Seong , KAIST (South Korea)
Dong-Soo Kim, KAIST (South Korea)

This paper presents a general overview of the KAIST Geotechnical Centrifuge Testing Center and the current research activities therein focusing on soil-foundation-structure interaction (SFSI) under seismic loading. The KAIST centrifuge facility, developed in 2009, includes a geotechnical centrifuge with a radius of 5 m, an in-flight shaking table, a four-degrees-of-freedom in-flight robot, and general modeling equipment. The facility is providing a good opportunity to perform various research experiments, and research and development will be further activated in this area. Dynamic centrifuge model tests for a single-degree-of-freedom system with a shallow foundation and offshore wind turbine structures with bucket foundation are among the current research activities at the center. The dynamic behavior of the models under both fixed and SFSI conditions is obtained by applying small-amplitude dynamic loading. The model structures are exposed to various seismic loadings to evaluate the seismic behavior of prototype structures. Through the physical modeling of the model structures, the importance of SFSI in performance-based seismic design is derived.