Evaluation of Structural Performance for High Strength Rockfall Protection Fence according Reinforcement of H-Beam using Numerical Analysis

Hyunwoo Jin; Sanghoon Seo; Duho Lee; Youngcheol Hwang

doi:10.14481/jkges.2023.24.1.25

All Issue

2023 Vol.24, Issue 1 Preview Page Next Page

Evaluation of Structural Performance for High Strength Rockfall Protection Fence according Reinforcement of H-Beam using Numerical Analysis 수치해석을 통한 지주 보강에 따른 고강도 낙석 방지울타리 구조성능 평가

1 January 2023. pp. 25-36

PDF XML

Abstract

In Korea, the rockfall prevention fence is designed with 50kJ of rockfall kinetic energy in order to prevent damages such as falling rocks and landslides. In the case of rockfall kinetic energy, it is highly dependent on the shape of the slope on which it occurs. As a previous study, a fence performance evaluation was conducted for 100kJ rockfall impact energy using ETAG 27. However, previous studies have focused on newly installed rockfall prevention fences. In this study, a reinforcing materials was installed on the existing rockfall prevention fence through numerical analysis, and the structural performance of the high-strength rockfall prevention fence capable of defending against 120kJ of rockfall kinetic energy was evaluated.

Keywords

120kJ

High-strength rockfall prevention fence

Numerical analysis

국내 낙석, 토사 붕괴 등의 피해를 방지하기 위해 설치하는 것은 낙석 방지책이다. 이 중 낙석 방지울타리는 50kJ의 낙석 운동에너지에 설계가 되고 있다. 낙석 운동에너지의 경우, 발생하는 사면의 형태에 따라 크게 달라지며 기존의 연구로는 ETAG 27을 이용한 100kJ급 낙석 충돌에너지에 대한 울타리 성능평가를 실시하였다. 하지만 기존의 연구들은 낙석 방지울타리가 신규로 설치되는 것을 대상으로 하였다. 본 연구에서는 수치해석을 통해 신규 설치가 아닌 기존의 낙석 방지울타리에 보강부재를 설치하고, 120kJ의 낙석 운동에너지에 대해 방어할 수 있는 고강도 낙석 방지울타리의 구조 성능을 평가하였다.

키워드

120kJ

고강도 낙석 방지울타리

수치해석

References

Kim, K. D., Moon, B. G., Ko, Man. G. and Han, K. J. (2005), Performance assessment of rockfall protection fences for the rockfall energy of 100 kJ using ETAG 27, Journal of the Korean Society of Hazard Mitigation, Vol. 16, No. 2, pp. 247~259 10.9798/KOSHAM.2016.16.2.247

Ministry of Land, Infrastructure and Transport (2008), 도로안정시설 설치 및 관리 지침 - 낙석방지시설 편, pp. 1~77.

Moon, J. H., Park, H. G., Jang, H. I. and Kim, B. J. (2020), Study on a standardized rockfall-protection fence for various rockfall impact energy using finite element analysis, Journal of Computational Structural Engineering Institute of Korea, Vol. 33, No. 5, pp. 297~302. 10.7734/COSEIK.2020.33.5.297

Information

Publisher :Korean Geo-Environmental Society
Publisher(Ko) :한국지반환경공학회
Journal Title :Journal of the Korean Geo-Environmental Society
Journal Title(Ko) :한국지반환경공학회 논문집
Volume : 24
No :1
Pages :25-36
Received Date : 2022-11-23
Revised Date : 2022-12-08
Accepted Date : 2022-12-20
DOI :https://doi.org/10.14481/jkges.2023.24.1.25

Journal of the Korean Geo-Environmental Society ISSN:1598-0820(Print) 2714-1233(Online) 한국지반환경공학회 논문집

All Issue