A study on the effect of ground vibration induced by vibrohammer and RCD on adjacent subway tunnel

바이브로 해머 및 RCD 공법 적용시 기존터널에 미치는 진동영향해석

  • 허영 (수원대학교 토목공학과) ;
  • 남기천 ((주)청석엔지니어링 지반공학부) ;
  • 김태형 ((주)청석엔지니어링 지반공학부) ;
  • 방진호 ((주)청석엔지니어링 지반공학부) ;
  • 곽창원 ((주)청석엔지니어링 지반공학부)
  • Published : 2003.06.01

Abstract

This paper presents the effect of ground vibration induced by vibrohammer and RCD on adjancent subway tunnel performance using FDM program. Firstly, the stability criteria for structures near vibration source were proposed according to existing data, then peak particle velocity around tunnel was estimated based on detailed information of vibrohammer and existing formula for dynamic loads through numerical analysis. The peak particle velocity induced by RCD bit rotation was also estimated using surveyed data and formula. Consequently, displacement and stress responses were obtained at crown, shoulder and spring line and compared with the criteria to check stability of tunnel.