Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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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) ;
  • Mok, Young-Jin (Dept. of Civil Engineering, Kyunghee Univ.)
  • 박인범 (경희대학교 토목공학과) ;
  • 박철수 (한국철도기술연구원 철도구조연구실) ;
  • 목영진 (경희대학교 건설공학부)
  • Published : 2009.03.27
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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.

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