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손기상 한국산업안전학회 1987 한국안전학회지 Vol.2 No.1
Currently Safety accidents have been raised & more concerned despite that Government has emphasized on preventing accidents in construction area of Korea. An accident is due to several causes of it, thus this the study, as the above, will specify the methodology to establish more effective safety prevention plan, itself, compared to most studies being based on a case, pecially for the projects under Far-East District, Corps of Engineers, USA. Additionally, this study will be limitted for performance method and the projects will not be classified with the same sorts as domestic ones are.
비계지지브라켓 유형별 구조기준 설정에 관한 실험적 연구
손기상,갈원모 한국산업안전학회 1995 한국안전학회지 Vol.10 No.4
It is only three(3) years since we applied brackets for scaffolding in the construction area. Unfortunately, there is no structural criteria on how to install those in the site so far, despite the fact that those brackets have been applied into the site by the firms already. It is shown that resistant capacity of each bracket type has been investigated, analyzed from this experimental study. Accident-concerning data on construction site analyzed by the Ministry of Labor, show temporary structure involves 18.6% of the total industrial accident, which the accidents from scafold-supporting brackets have rate of 42.5% of the ones occurred from the temporary structures. There are two main aspects to be observed : one is how much resistant capacity the brackets have themselves, the other is how exactly to install those without eccentricity. But practically, nobody does check of this bolt-installing conditions in the site and no check of tightening level of nut because there is no available tool to check torque amount for this kind of nut. We just have to rely on scaffolders experience of this tightening. This experiment involves just this variable of tigtness at site. Eventually this insufficient tightness causes to collapse those scaffolding structures. The bracket might have less the one than its original capacity due to this insufficient tightness. Three(3) times of PIVOT tests show that fractured condition of two(2) row brackets has occurred mostly at lower bolt due to shear force. Therefore, tightness of bracket-installing bolt, tensile strength of the bolt, shear strength of the bolt, loading condition with equal two point or inequal two point loads, are mainly investigated as variables in this study.
손기상,Son, Gi-Sang 한국건설안전협회 1992 建設 安全技術 Vol.2 No.4
그간 많은 세미나에서 건설안전 확보대책으로써 근원적 안전확보방안으로 ‘설계시부터의 안전’을 제창하고 있지만 이를 위한 구체적인 제시를 하지 못하고 있었으며 필자가 ‘ 건설안전설계 프로세스‘를 출판해 내면서 건축설계사는 물론 구조담당 엔지니어들의 임무수행시에도 각종 결함가능성을 확인하고 이미 수년전부터 관심을 갖고 연구해 오T고, 또 교류중이던 호주 The Univ. of Newcastle 토목공학과 Prof. Melchers의 논문을 연구하던 차에 많은 내용 중에서 이해와 접근이 용이한 본 논궤를 그대로 제시한다.