- Volume 10 Issue 4
A Study on the Properties comparison of the PVC Net and Expanded Metal Using Rockfall Protection Net Pullout Test Equipment
낙석방지망 인발시험을 이용한 PVC망과 Expanded Metal 특성비교에 관한 연구
- Cheon, Seongyeol ;
- Lee, Seungho
- 천성열 (상지대학교 건설시스템공학부) ;
- 이승호 (상지대학교 건설시스템공학부)
- Received : 2009.03.25
- Accepted : 2009.05.25
- Published : 2009.06.01
The governmental investment to SOC facilities currently has increasedthe construction of new roads and the consistent extension of already-existing roads or the line-shape revision of those roads. As a result, the road cut slopes have been increasingrapidly. Unfortunately, human-life damages and property damages frequently occur due to the rockfall and the landslide every year. To reduce those damages, many studies have been performed. The present regulation regarding rockfall protection facilities follows the "Guide for Installation and Management of Road Safety Facilities" issued by MLTM (the Ministry of Land, Transport, and Maritime Affairs) that indicates the standard size of facilities and energy absorbing efficiencies. Most domestic road slopes use standardized rockfall protection facilities based on the regulation. However, there have been doubted about the effectiveness of rockfall protection facilities and the damages caused by rockfalls havebeen increasedevery year. Thus, it seems that relevant studies are necessary on the rockfall protection net being capable of supporting rockfall energies. Accordingly, this study reviews previous literature to investigate the function and the feature of rockfall protection nets and analyzetheir limitations by each type. After that, by using the pullout test device for a rockfall protection net, an experiment on the PVC coating net and the expanded metal is performed under the exact same condition. Finally, the features of the Expended metal is explained with the comparison analysises of load-variation and the confirmation of damaged forms. As a result, there have been founded the problemsof net breaking down and not being able to support due to PVC coating net's material property of disintegration. On the other hand, the Expanded Metal might be expected as a substituteof rockfall protection net according to its capability of support and integration.
Supported by : 상지대학교
- 국토해양부, 2000도로안전시설 설치 및 관리지침-낙석방지시설편, pp. 4-11.
- 대통령령 제21234호 (2008), 도로법 제3조 및 시행령 제1조.
- 이종구, 이용주, 나승민, 유병옥, 황영철 (2008), 고장력 선재를 적용한 고성능 낙석방지망, 대한토목학회 정기 학술대회발표논문 초록집, Vol. C, pp. 41.
- 전성엽, 이승호 (2008), 낙석방지망 인발시험 장치를 이용한 Expanded Metal 특성에 관한 연구, 석사학위 논문, 상지대학교, pp. 33-52.
- 한국시설안전공단, 낙석방지울타리 낙석지지능력 평가방안 수립 및 성능개선 기술개발, pp. 13.
- 황영철 (2002), 도로 낙석방지울타리의 낙석지지능력 평가 연구, 한국지반환경공학회 논문집, 제3권 제4호, pp. 59-66.
- Brawner, C. O. (1994), Rockfall Hazard Mitigation Methods, Publication No. FHWA-SA-93-085.