A Study on Protection Depending on Mesh Size of Expanded Metal for Slope Reinforcement

사면보강용 Expanded Metal 격자크기에 따른 인발 특성 연구

  • Ji, Younghwan ;
  • Kim, Kihwan ;
  • Kim, Sungho ;
  • Hwang, Yeongcheol ;
  • Lee, Seungho
  • 지영환 (상지대학교 건설시스템공학부) ;
  • 김기환 ((주)삼보기술단 지반부) ;
  • 김성호 (상지대학교 건설시스템공학부) ;
  • 황영철 (상지대학교 토목공학과) ;
  • 이승호 (상지대학교 토목공학과)
  • Received : 2010.08.12
  • Accepted : 2010.11.02
  • Published : 2010.12.01

Abstract

The construction of new roads and the consistent extension of already-existing roads or the line-shape revision of those roads are increased with the governmental investment to SOC facilities currently. Accordingly, the road cut slopes are in the trend of rapidly increasing. As the road slope has increased, a lot of human and property damages has entailed consequently and in the local case, numerous studies have carried out aiming at minimizing this damages caused by the rockfall and landslide. In general, standard falling rock prevention facility has employed for most of the local road slope based on "Guide for Installation and Management of Road Safety Facilities" published by MLTM(the Ministry of Land, Transport, and Maritime Affairs) but profound doubt has raised as to whether this rockfall prevention facility would function properly enough to prevent rockfall efficiently without any damages in case of actual occurrence of rockfall. In addition, it is a reality that in most cases, such work is relied on overseas technology as a whole as the local technical level is low and in case of rockfall prevention net, it is judged that a study on rockfall prevention net that is able to endure more powerful rockfall energy is required as the problem including net bursting is taken place as a result of enough bearing force being failed to be demonstrated due to its partial weak point(not uniformly made). Under this background, in this study, three kinds of model depending on mesh size of expanded metal that is considered to have an adoptability as rockfall prevention net, as target are selected and characteristics depending on mesh size of expanded metal is intended to be researched through a pull-out test performance by using pull-out test equipment rockfall prevention net.

Acknowledgement

Grant : 낙석 및 산사태 방지를 위한 차세대 신기술 개발

Supported by : 국토해양부

References

  1. 국토해양부(2000), 도로안전시설 설치 및 관리지침 - 낙석방지 시설편, pp. 4-11.
  2. 박기준, 정도연, 류정수, 강인규(2004), 종방향 와이어로프의 연결에 의한 기존 낙석방지망의 개선사례, 한국지반공학회 사면안정 학술발표회, pp. 65-66.
  3. 전성엽, 이승호(2008), 낙석방지망 인발시험 장치를 이용한 Expanded Metal 특성에 관한 연구, 석사학위 논문, 상지대학교, pp. 33-52.
  4. FHWA(1994), Rockfall Hazard Mitigation Methods. Participant Workbook: FHWA Report, FHWA-SA-93-085, pp. 15-90.