KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Test method for Young's Modulus of Parallel Graded Coarse Granular Materials by Large Triaxial Test

대형삼축압축시험을 이용한 상사입도 조정 재료의 탄성계수 산정시험

  • 이성진 (한국철도기술연구원 첨단인프라연구단) ;
  • 추연욱 (KAIST 건설및환경공학과) ;
  • 황수범 (한국철도기술연구원 첨단인프라연구단) ;
  • 김기재 (한국철도기술연구원 첨단인프라연구단)
  • Received : 2012.06.21
  • Accepted : 2012.08.09
  • Published : 2012.09.15
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Abstract

Coarse granular materials such as gravel, rubble is used as major fill materials in earth structures of railway, road and dam. Therefore, it is essential to accurately evaluate properties of these materials for reasonable design and construction. In the precedent study, we built large triaxial testing system and verified system compliance with a focus on the dynamic properties. And we could secured the reliability of the system. In this study, the cyclic triaxial tests were performed in various experimental conditions on coarse granular material. Two series of parallel graded samples are prepared by mixing crushed rock. The influence of grain size, loading pattern, loading frequency, and fine contents were analyzed and discussed.

쇄석, 자갈 등과 같은 대입경의 조립지반재료들은 철도, 도로, 댐 등과 같은 지반구조물의 주요한 성토재료로 사용되고 있다. 따라서 합리적인 설계와 시공을 위해서 이들 재료의 물성을 정확하게 평가하는 것은 필수적이다. 본 연구에 앞서 대형 삼축압축시험장비를 구축하고 미소변형 수준에서의 물성산정을 위한 시스템 검증을 수행하여, 시험장비의 신뢰성을 확보할 수 있었다. 본 연구에서는 대입경의 조립지반재료의 다양한 실험 조건들을 고려하여 반복삼축압축시험이 수행되었다. 특히 상사입도 조립재료 시편들에 대해 입자크기, 하중패턴, 하중 주파수, 세립분 함유 조건 등이 탄성계수 결과에 미치는 영향에 대해 검토, 분석하였다.

Keywords

References

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