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정경태,김시유,오정은,이동훈,Jeong Kyeongtae,Kim Siyu,Oh Jeongeun,Lee Donghoon 한국건설안전학회 2023 한국건설안전학회 논문집 Vol.5 No.1
Gang-foam is used in many construction projects because it is not only precise in terms of vertical, horizontal, and specifications, but also easy to install and dismantle. However, major accidents occur every year due to non-compliance with safety rules and work order, also manuals and checklists currently in use are insufficient. Thirty-seven surveys was conducted by analyzing major accident cases of domestic gang-form construction project and deriving 20 risk factors and 43 check points. Based on the survey, the importance and appropriateness of check points were evaluated. As a result of this study, a checklist was presented, check points were placed in the order of importance based on assembly, installation, dismantling, and lifting of the Gang-form process. The checklist was organized so that workers could comply with safety rules and work order. Through this, it is expected to prevent major accidents and contribute to efficient safety management.
정경태,조민제,김혜인,이동훈,Jeong Kyeongtae,Jo Minje,Kim Hyein,Lee Donghoon 한국건설안전학회 2024 한국건설안전학회 논문집 Vol.6 No.1
본 연구에서는 유·무인 타워크레인의 사고 사례를 바탕으로 사고의 유형 및 원인을 분석하고 그에 따른 타워크레인 사고 예방 대책을 제안하였다. 이를 위해 유·무인 타워크레인의 사고 사례를 각각 10건씩 분석하였다. 또한, 현직 타워크레인 기사를 대상으로 설문조사를 실시하여 사고원인을 도출하였다. 그 결과, 공통적으로 '소통 미흡'이 가장 큰 사고의 원인으로 분석되었다. 따라서, 본 연구에서는 타워크레인 운전자와 작업자 간의 소통을 담당하는 신호수에 대한 국내외 체계와 법령을 조사하고 다음과 같은 3가지의 개선 방법을 제안하였다. 첫째, 신호수 체계를 법, 제도적으로 재정립해야 한다. 둘째, 국가기관과 전문성을 갖춘 민간단체들이 표준화된 교육 매뉴얼을 만들어 신호수 교육자들에게 배포하고, 체크리스트를 만들어 교육자들을 관리하도록 한다. 셋째, 타워크레인을 사용하는 현장일 경우 사업주가 전문자격을 갖춘 신호수를 의무적으로 배치하도록 한다. 끝으로, 본 연구의 결과를 통해 유·무인 타워크레인의 사고유형 및 원인에 대한 차이와 신호수 체계의 법, 제도적 개선의 필요성을 강조할 수 있을 것으로 기대한다. In this study, based on accident cases of manned and unmanned tower cranes, the types and causes of accidents were analyzed and tower crane accident prevention measures were proposed accordingly. As a result, 'lack of communication' was commonly analyzed as the biggest cause of accidents. Therefore, in this study, we investigated domestic and international systems and laws regarding signalmen responsible for communication between tower crane operators and workers and proposed the following three improvement methods. First, the signalman system must be legally and institutionally reestablished. Second, national agencies and private organizations with expertise should create standardized training manuals and distribute them to signalman educators, and create checklists to manage educators. Third, in the case of a site using a tower crane, the employer must mandatorily deploy a signalman with professional qualifications. Lastly, the results of this study are expected to highlight the differences in accident types and causes of manned and unmanned tower cranes and the need for legal and institutional improvement in the signal system.
FCP(Free-Form Concrete Panel) 품질 향상을 위한 측면 실리콘 거푸집 지지장치 개발 기초연구
정경태 ( Jeong Kyeongtae ),김지혜 ( Kim Jihye ),이동훈 ( Lee Donghoon ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
Free-form Concrete Panel(FCP) is each panel that composes the concrete exterior skin of Free-form building. FCPs contain curved surfaces, and FCPs have different curvature, size, and angles. In order to manufacture FCP, high technology is required, and it is currently difficult to manufacture it according to the design shape. In particular, many errors occur in the side shape of FCP. This is because when the side silicone mold is applied, it is installed without a coupling method between molds and support device. In this study, basic research was conducted to develop a side silicone mold support device to solve the above problems. We classified the required performance and derived the detailed requirements. Also, Based on this, we drew the basic design of the support device. We plans to conduct design improvement, mock-up making, and FCP manufacturing experiments through future research.