폭발하중에서의 일방향 철근 콘크리트 특성에 따른 거동 민감도

기정훈(Kee, Jung Hun),박종일(Park, Jong Yil) 한국콘크리트학회 2017 한국콘크리트학회 학술대회 논문집 Vol.29 No.1

시설물 방호등급 개념 설계

기정훈 ( Jung Hun Kee ),이현석 ( Hyun Seok Lee ),( Dongfack Guepi Clovis Jamot ),박종일 ( Jong Yil Park ) 한국안전학회(구 한국산업안전학회) 2015 한국안전학회지 Vol.30 No.3

Although attention to terrorism has increased sharply in recent years within many countries, it is by no means a new phenomenon. Majority of these countries have limited regulations or guidelines about terrorism. LOP (Level Of Protection) can be consider as a first step. This paper seeks to present a process to determine LOP and allowable damage. LOP is determined by asset value reason why it should be based on cost. The asset value is defined as “cost induced when asset is damaged”. For example, the collateral damage outside the facility should be taken in consideration in the asset value. Allowable structural damage is assigned depending on LOP.

Bow-Tie 기반 가설식 곤돌라 사고 예방 대책에 관한 연구

공준성,기정훈,박종일,Kong, Joon Seong,Kee, Jung Hun,Park, Jong Yil 한국안전학회 2020 한국안전학회지 Vol.35 No.4

The use of temporary Gondola has been steadily increasing. The temporary Gondola is required to get a safety certification review during installation and to be inspected during use within every six months. Most of them, however, are dismantled before six months, and inappropriate activities are conducted frequently for shorter working hours and convenience of work. In this study, the characteristics of the temporary Gondola and the domestic accident cases that occurred over the past 10 years(2008-2017) are analyzed for the type of accident, the state of the accident by year, and the actions of the workers in the event of an accident. Also comprehensive accident reduction measures were proposed by identifying the fundamental causes of temporary Gondola accidents, problems of existing preventive measures, and system defects by utilizing Bow-Tie techniques.

갱폼 재해의 FTA를 통한 정량적 위험성 산정에 관한 연구

함영종,기정훈,박종일,Ham, Young Jong,Kee, Jung Hun,Park, Jong Yil 한국안전학회 2020 한국안전학회지 Vol.35 No.4

Although gangform has good workability due to the integration of outer wall forms and working platforms, 22 workers were died from 21 gangform related accidents during 2012 to 2016. Quantitative risk assessment is required for evident based prevention measure selection. In this study, based on 52 accident data from 2004 to the first half of 2019, FTA is conducted for probabilities of direct causes and their contribution to accidents. Three stages are considered; gangform installation, dismantling and lifting, and using. The effectiveness of countermeasures is evaluated through minimum cut set, RAW and RRW. Complete assembly of gangform on the ground level, detailed planning, and fall prevention device are suggested as prevention measures for installation, dismantling and lifting, and using stages, respectively.

애그플레이션(agflation)의 원인과 그 확대에 따른 국가정책대응 연구: 바이오 에탄올 생산 사례를 중심으로

정상기 ( Sang Kee Jung ),기정훈 ( Jung Hoon Ki ) 중앙대학교 국가정책연구소 2009 국가정책연구 Vol.23 No.3

애그플레이션(agflation)은 농업(agriculture)과 인플레이션(inflation)의 합성어로, 농산물 가격 급등으로 일반 물가가 상승하는 현상을 뜻하는 신조어이다. 애그플레이션은 식품의 가격인상 뿐만 아니라 농산물 수출 국가들이 농산물 수출 관세를 크게 인상하고 있다는 점에서 세계 여러 국가의 경제적인 타격을 주게 된다. 본 연구에서는 애그플레이션의 원인과 그 확대에 따른 국가정책대응의 방향을 특별히 바이오연료 사례를 중심으로 하여 제시하고자 한다. 애그플레이션은 기상이변에 따른 작황부진, 식량자원주의와 같은 공급측 요인과 경제발전에 따른 곡물수요의 증가와 같은 수요측 요인, 그리고 국제유가상승이나 국제경기 침체와 같은 외부요인에 의해서 발생하게 된다. 정부의 중장기적인 애그플레이션에 대한 정책적 대응방안은 다음과 같은 방향성을 가져야 한다. 첫째, 식량의 중요성에 대한 국민들의 인식이 필요하다. 둘째, 식량 자급률을 높이기 위한 방법과 비축용 식량을 확보하기 위한 방법이 요구된다. 셋째, 다양한 정부 지원 정책이 요구된다. 넷째, 바이오연료 관련 기술 개발 및 제도적 뒷받침이 요구된다. 다섯째, 해외의 농업자원 개발도 고려해야 한다. 마지막으로 저탄소 녹색성장과 연관된 그린정책을 적극적으로 활용한다면 실질적인 측면에서 효과적으로 애그플레이션에 대응할 수 있을 것이다. Agflation is a new compound word of `agriculture` and `inflation`, which denotes general goods` price increase as agricultural products` prices are enhanced. It gives a strong economic impacts on many agricultural products importing countries because agricultural products exporting countries raise their custom either. This study examines major reasons of agflation and a desirable direction of national energy policy as the agflation expands around the world. Agflation happens from the following three reasons: supply factor, demand factor, and external factors. Supply factors include poor harvest, food weapon principle, while demand factors include grain demand rise triggered from economic growth. External factors happen when there is international oil price upsurge or global economic recession. Therefore, we suggest five principles for the government`s national energy policy. First, the government should make efforts to awaken Koreans about the significance of food. Second, the government has to reserve some food for future emergency. Third, the government had better make various policy measures for aiding farmers and their households. Fourth, the government should support to develop bio-fuel industries and their institutions. Fifth, the government has to consider global development of agricultural resources. Finally, current government`s low carbon green growth strategy will provide very practical and effective policy tools for preparing agflation.

방호시설물 리스크 산정 소프트웨어 개발

박종일(JongYil Park),기정훈(JungHun Kee) 한국콘크리트학회 2019 콘크리트학회지 Vol.31 No.5

건설업 사고 발생원인 파악을 위한 사고 분석 모델 개발

임원준 ( Won Jun Lim ),기정훈 ( Jung Hun Kee ),성주현 ( Joo Hyun Seong ),박종일 ( Jong Yil Park ) 한국안전학회(구 한국산업안전학회) 2019 한국안전학회지 Vol.34 No.1

Accident analysis models were developed to improve the construction site safety and case studies was conducted. In 2016, 86% of fatality accidents occurred due to simple unsafe acts. Structure related accidents are less frequent than the non structure related causes, but the number of casualties per accident is two times higher than non structure one. In the view of risk perception, efforts should be given to reduce accidents caused by low frequency - high consequence structure related causes. In case of structure related accident, structural safety inspection and management (including quality), ground condition management / inspection technology, and provision of risk information delivery system in case of non structure related accident were proposed as a solution. In analysis of relationship between safety related stakeholder, the main problem were the lack of knowledge of controller and player, loss of control due to duplicated controls, lack of communication system of risk information, and relative position error of controller and player.

항타기 전도예방을 위한 임시 철판의 두께에 관한 연구

방대평(Daepyung Bang),박종일(Jongyil Park),기정훈(Junghun Kee) 한국지반환경공학회 2020 한국지반환경공학회논문집 Vol.21 No.11

건설 현장에서 항타기 전도 사고는 빈도는 낮으나 발생 시 심각한 피해를 야기한다. 항타기 전도 사고의 주원인은 침하에 의한 모멘트 발생임에도 불구하고 KOSHA-C-101-2014, KOSH-A-GUIDE-71-2012, 산업안전보건 기준, NCS 등의 규정에서 철판사용에 대한 선언적 내용만 있을 뿐 구체적인 요구조건이 명시되어 있지 않다. 이에 항타기 자중, 지반조건에 따라 하부 철판의 제원이 바뀌어야 하지만 현장에서는 임의로 사용되고 있다. 본 연구에서는 수치 해석(Plaxis 2D)을 기반으로 요구되는 최소 철판두께를 분석 하였다. 토양의 종류(모래, 점토), 하중 분포, 철판 두께(10mm, 20mm, 30mm, 40mm)에 따라 침하 정도와 및 지반 항복유무를 산출하였으며, 그 결과 모든 조건에서 두께 10mm 철판은 지반 항복을 유발하였다. 두께 20mm부터는 지반 침하로 발생하는 회전각이 허용치인 2° 이내로 분석되었다. Although pile driver overturning accidents at construction site are not frequent, most leads to serious disasters. The main cause of accidents is uneven settlement of the ground. To prevent this, related guidelines such as KOSHA-C-101-2014, KOSH-A-GUIDE-71-2012, Occupational Safety and Health Standards, and NCS stipulate the installation of steel plates over ground. However, since the required steel plate thickness considering the self-weight of pile drivers and the underlying ground condition is not quantitatively presented, it is randomly applied in the field. In this study, the required minimum steel plate thickness was analyzed based on a numerical analysis (Plaxis 2D). Settlements and soil failure were calculated according to the different type of soils (sand, clay), load distribution and steel plate thickness (10mm, 20mm, 30mm, 40mm). Under all conditions, 10mm steel plate causes soil collapse. From thickness 20mm, the ground uneven subsidence is within 2° of the allowable leader angle.