An 800 g-tonne geotechnical centrifuge at K-water Institute, Korea

Abstract

An 800 g-tonne capacity, 8.0 m platform radius geotechnical centrifuge has been installed at K-water Institute, Daejeon, Korea in 2012 and it is one of the largest in the world. The maximum acceleration of the centrifuge is 150 g, and maximum 8000 kg payload can be loaded in 2.0 m(L) × 2.0 m(W) × 2.0 m(H) large platform to be accelerated up to 100 g. The centrifuge is equipped with fluid rotary joints, a fiber optic rotary joint, electrical slip rings, and on-board data acquisition system. For seismic performance evaluations of large structures, a large scale uniaxial servo hydraulic inflight earthquake simulator has been developed. It has a 1.6 m(L) × 0.8 m(W) experimental platform and can simulate maximum 22 g horizontal base motion in sinusoidal waveform to shake a 1500 kg payload. In this paper, the details of equipment developed for physical modeling research will be introduced and lessons from the installation of the large geotechnical centrifuge will be shared with the research community of physical modeling in geotechnical engineering.

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