Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Study of Dynamic Characteristics of West Coast Saemangeum Sand by Torsional Shear Test

비틂전단시험에 의한 서해안 새만금 모래의 동적특성 연구

  • Jeon, Hong-Woo (Department. of Civil acd Environmental Engineering, Pusan National University) ;
  • Son, Su-Won (Department. of Civil acd Environmental Engineering, Pusan National University) ;
  • Kim, Jin Man (Department. of Civil Engineering, school of Civil acd Environmental Engineering,, Pusan Natinal University)
  • 전홍우 (부산대학교 사회환경시스템공학과) ;
  • 손수원 (부산대학교 사회환경시스템공학과) ;
  • 김진만 (부산대학교 사회환경시스템공학부 토목공학전공)
  • Received : 2013.09.03
  • Accepted : 2013.12.18
  • Published : 2013.12.31
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Abstract

The dynamic characteristics of west coast sand were investigated in order to evaluate the design properties of the offshore wind turbine foundations to be constructed in the West Sea. Torsional shear tests were performed at different confining pressures and densities on specimens constituted by the dry fluviation method. The strain-dependent shear modulus and damping curves were obtained, together with modulus degradation curves. The results show that the confining pressure is more influential on the dynamic characteristics of the sand than the density. It was also found that the dynamic curves from this study were similar to those proposed by others. The modulus degradation ratio $G/G_{1st}$ varies slightly at a small strain level, but increases significantly once beyond the intermediate strain level.

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References

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