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방호 패널의 구성 재료 및 설치 조건에 따른 내충격 특성에 관한 연구
석원균 ( Seok Won-kyun ),김영선 ( Kim Young-sun ),이예찬 ( Lee Yae-chan ),남정수 ( Nam Jeong-soo ),김규용 ( Kim Gyu-yong ) 한국건축시공학회 2023 한국건축시공학회지 Vol.23 No.6
본 연구에서는 수소 충전소와 같은 폭발 가능성을 가진 구조물들의 안전 설계 방안으로 방호패널이 희생 부재로 설치되어 구조물의 직접적인 피해를 최소화하고 회복 탄력성을 가질 수 있어야 한다고 제시하였다. 이를 위해 비상체의 고속 충돌상황에서 방호 패널이 구조물과 밀착 또는 이격 설치되었을 때 구조물이 받는 영향을 정량적으로 평가하는데 실험의 초점을 맞추고 있다. 실험 설계는 우수한 재현성을 위해 기존에 주로 사용한 콘크리트 구조부재 대신 강판을 사용하며, 철판 배면의 변형 차이를 통해 구조부재의 충격을 비교·분석하였다. 또한, 방호 부재의 이격재로 사용한 탄성체의 물성 변화와 방호부재 및 탄성체에 따른 충격파 전달 시간의 차이가 구조부재에 미치는 영향을 조사하였다. This study suggested that protective panels should be installed as sacrificial members as a safety design method for structures with potential explosions such as hydrogen charging stations to minimize direct damage to the structure and have resilience. To this end, the focus of the experiment is on quantitatively evaluating the impact of the structure when the protection panel is installed closely or spaced apart from the structure in a high-speed collision situation of the projectile. The experimental design used steel plates instead of concrete structural members mainly used in the past for excellent reproducibility, and the impact of structural members was compared and analyzed through deformation differences on the back of the steel plate. In addition, the impact of changes in the physical properties of the elastic body used as a separation material for the protective member and the difference in shock wave transmission time according to the protective member and the elastic body on the structural member was investigated.
고속 발사체 충격을 받은 시멘트 복합체의 철근보강에 따른 파괴 특성에 관한 실험적 연구
석원균 ( Seok Won-kyun ),김규용 ( Kim Gyu-yong ),남정수 ( Nam Jeong-soo ),이예찬 ( Lee Yae-chan ),전현수 ( Jeon Hyun-soo ),김영선 ( Kim Young-sun ) 한국건축시공학회 2022 한국건축시공학회 학술발표대회 논문집 Vol.22 No.1
With reent changes in energy sources, infrastructure facilities for energy charging are increasing around living areas. The infrastructure facilities have a slight possibility of explosion, and for this research on protection is needed. In this study, the performance of the reinforcement type is reviewed by examining the destructive properties after applying the impact by the high-velocity projectile to the cement composite to which various reinforcement methods are applied.
물시멘트비 및 단위수량에 따른 순환콘크리트의 강도 특성과 내구성능에 관한 실험적 연구
김영선,김정진,석원균,이주호,김규용,Kim, Young-Sun,Kim, Jung-Jin,Seok, Won-Kyun,Lee, Joo-Ho,Kim, Gyu-Yong 한국건설순환자원학회 2011 한국건설순환자원학회지 Vol.6 No.3
To resolve the problem which is demand and supply imbalance of fine aggregate by the shortage of natural fine aggregate and the environment regulations, the studies for the application of recycled fine aggregate made from waste concrete have been recently carried out. The objective of this study is to shed light on the mechanical properties and durability performance of concrete using recycle fine aggregate with various water to cement ratios and unit water contents. And it is intend to propose the fundamental data for structural application of recycled concrete. In particular, the effects according to the variations of water to cement ratios and unit water contents in recycled concrete with recycled fine aggregate replacement of 100 percent are discussed by the test results, such as air content, slump, time of set, compressive strength, tensile strength, carbonation, chloride penetration. 천연골재의 고갈 및 환경규제에 의한 건설용 잔골재의 수급불균형 문제를 해결하기 위해 폐기콘크리트로부터 생산된 순환잔골재의 적용성을 위한 연구들이 수행되어 왔다. 본 연구의 목적은 W/C 및 단위수량의 변화에 따른 순환잔골재를 사용한 콘크리트의 역학적 특성 및 내구성능에 관한 이해를 높이는 것이다. 또한, 순환콘크리트의 구조적 적용을 위한 기초자료를 제시하는데 의미가 있다. 특히, 순환잔골재를 100% 대체한 순환콘크리트에 대하여 W/C 및 단위수량의 변화에 따른 영향은 공기량, 슬럼프, 응결시간, 압축강도, 인장강도, 탄산화 및 염화물 침투와 같은 항목에 대한 시험결과에 의해 분석 제시되었다.
극서환경에서 3시간 유지성능을 가진 콘크리트 특성에 관한 실험적 연구
김영선 ( Kim Young-sun ),석원균 ( Seok Won-kyun ),김정진 ( Kim Jung-jin ),기전도 ( Ki Jun-do ),박순전 ( Park Soon-jeon ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1
The high performace water reducing agent with three-hours-fluidity-retention performance is developed for the purpose of entering into the global market belonging to extreme environment such as Southeast Asia and the Middle East. In this study, the fresh and mechanical properties of the concrete with three-hours-fluidity-retention performance are presented.
시스템 서포트 하중 모니터링 센서를 이용한 위험 예측시스템 연구
심학보 ( Shim Hak-bo ),석원균 ( Seok Won-kyun ),박순전 ( Park Soon-jeon ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.2
Damage to temporary facilities and structural members caused by excessive loads in the field continue to occur. If the load can be monitored in advance, the risk can be prevented. In this study, a load cell sensor is installed under the system support, and load data is wirelessly transmitted through a Bluetooth AP(wireless). Risk prediction system is proposed through an construction alarm when an abnormal load occurs through real-time multi-point monitoring by sensor location.
철골좌대에 설치되는 타워크레인의 주변 오픈 구간에 의한 사용성 영향 분석
심학보 ( Shim Hak-bo ),석원균 ( Seok Won-kyun ),박순전 ( Park Soon-jeon ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.2
In Top-down sites, there are many open sections around the tower crane installed on the steel frame. The open section near the tower crane may cause slab cracks and deformation of the steel frame members installed in the open section due to earth pressure. Therefore, in the field, additional consideration during construction of the open section near the tower crane should be considered.
장경간 비정형 곡면 지붕층의 시공중 좌표 계측 사례 연구
심학보 ( Shim Hak-bo ),석원균 ( Seok Won-kyun ),박순전 ( Park Soon-jeon ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.2
In this paper, it was tried to prove the possibility and effect of coordinate measurement by using MEP layout equipment at the construction stage, and to propose a method to improve measurement accuracy during construction. For this study, the passenger terminal site, which is a long span structure, was selected and compared with three dimensional CAD drawings and construction measurement results using MEP layout equipment for the precise construction of long-span irregular curved roof layers. As a result, it was found that it is possible to construct three-dimensional curved roof layers using MEP layout equipment through measurement and analysis.