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

Korean Geotechnical Society (한국지반공학회)
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Enhancement of Subgrade Stiffness Profiling by Incorporating Rayleigh and Love Waves into the Common-Array-Profiling(CAP) SASW Technique

레일레이파.러브파의 동시활용과 CAP SASW 기법 적용에 의한 지반 전단강성 평가의 고품질화

  • Chang, Dae-Woo (Dept. of Civil and Environmental Engineering, Chung-Ang University) ;
  • Joh, Sung-Ho (Dept. of Civil and Engineering, Chung-Ang University) ;
  • Kang, Tae-Ho (Dept. of Civil and Engineering, Chung-Ang University) ;
  • Koh, Hak-Song (Korea Railroad Research Institute)
  • 장대우 (중앙대학교 토목환경공학과) ;
  • 조성호 (중앙대학교 토목공학과) ;
  • 강태호 (중앙대학교 토목공학과) ;
  • 고학송 (한국철도기술연구원)
  • Published : 2005.03.25
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Abstract

Recently, surface-wave methods have been widely used for site investigation due to economic advantage and improved reliability. Specially, the Spectral-Analysis-of-Surface-Wave (SASW) method has been used to evaluate soil properties in geotechnical engineering. In determination of subgrade stiffness by SASW measurements, only the vertical Rayleigh waves have been used. This study proposed a framework to determine shear-wave velocity profiles by using vertical and horizontal Rayleigh waves and Love wave all together. In addition, the Common-Array-Profiling(CAP) SASW method was employed, which subgrade stiffness of profile the local material under two fixed receivers. The procedure proposed in this study was verified by comparing the shear-wave velocity profiles with the shear-wave velocity profiles of downhole testing at two geotechnical sites.

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