Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2009.03a
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- Pages.626-633
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- 2009
Adoption of the large scale free-free resonant column test
대형 공진주 시험 장비의 적용
- Park, In-Beom (Dept. of Civil Engineering, Kyunghee Univ.) ;
- Park, Chul-Soo (Railroad Structure Research Department, Korea Railroad Research Institute) ;
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Mok, Young-Jin
(Dept. of Civil Engineering, Kyunghee Univ.)
- Published : 2009.03.27
Abstract
A large scale resonant column testing equipment is under development. The would-be equipment is aiming to test 150mm-diameter specimens, which can contain as large a grain size as 25mm. Such a large specimen is hardly excitated with the existing fixed-free end condition because the torsional force cannot be effectively coupled to the specimen. The specimen will be rather resonated with free-free condition and the scheme is implemented with a rotational bearing installed between coil-magnet exciter and base pedestal. Presently the equipment was assembled and is under calibration with a cylindrical brass specimen.