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유동만(Dong-Man Ryu),서영교(Young-Kyo Seo),강재환(Jae-Hwan Kang),이동익(Dong-Ik Lee),조정윤(Jung-Yun Cho) 한국해양환경·에너지학회 2012 한국해양환경·에너지학회 학술대회논문집 Vol.2012 No.5
Anchors are primarily designed and constructed to resist outwardly-directed loads imposed on the foundation of the structure. These outwardly-directed loads are transmitted to the soil at a greater depth by the anchors. Buried anchors have been used far thousands of years to stabilize the structures. Various types of earth anchors are nowadays used for the uplift resistance of transmission towers, utility poles, submerged pipelines and tunnels. Anchors are also used for tieback resistance of earth-retaining structures, waterfront structures, at bends in pressure pipelines, md when it is necessary to control thermal stress. In this research we have analyzed the uplift behavior of plate anchors in sand by experimental study to estimate the uplift behavior cf plate anchor. To archive the research purpose, uplift resistance md displacement characteristics cf plate anchors caused by embedment ratio, plate diameter were studied, compared and analyzed with various cases.
유동만(Dong-Man Ryu),서영교(Young-Kyo Seo),강재환(Jae-Hwan Kang),이동익(Dong-Ik Lee),조정윤(Jung-Yun Cho) 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5
Anchors are primarily designed and constructed to resist outwardly-directed loads imposed on the foundation of the structure. These outwardly-directed loads are transmitted to the soil at a greater depth by the anchors. Buried anchors have been used for thousands of years to stabilize the structures. Various types of earth anchors are nowadays used for the uplift resistance of transmission towers, utility poles, submerged pipelines and tunnels. Anchors are also used for tieback resistance of earth-retaining structures, waterfront structures, at bends in pressure pipelines, and when it is necessary to control thermal stress. In this research we have analyzed the uplift behavior of plate anchors in sand by experimental study to estimate the uplift behavior of plate anchor. To archive the research purpose, uplift resistance and displacement characteristics of plate anchors caused by embedment ratio, plate diameter were studied, compared and analyzed with various cases.
사질토 지반에 설치된 판앵커의 인발속도에 따른 저항력 분석
유동만(Dong-Man Ryu),서영교(Young-Kyo Seo) 한국해양공학회 2012 韓國海洋工學會誌 Vol.26 No.5
Anchors are primarily designed and constructed to resist outwardly directed loads imposed on the foundation of a structure. These outwardly directed loads are transmitted to the soil at a greater depth by the anchors. Buried anchors have been used for thousands of years to stabilize structures. Nowadays, various types of earth anchors are used for the uplift resistance of transmission towers, utility poles, submerged pipelines, and tunnels. Anchors are also used for the tieback resistance of earth retaining structures, waterfront structures, at bends in pressure pipelines, and when it is necessary to control thermal stress. In this research we analyzed the uplift behavior of plate anchors in sand using a laboratory experiment to estimate the uplift behavior of plate anchors under various conditions. To achieve the research purpose, the uplift resistance and displacement characteristics of plate anchors caused by the embedment ratio, plate diameter, and loading rate were studied, compared, and analyzed in various cases.
점토 지반에서 인발속도에 따른 판앵커의 극한 인발저항력 분석
서영교(Young-Kyo Seo),유동만(Dong-Man Ryu) 한국해양공학회 2013 韓國海洋工學會誌 Vol.27 No.3
Anchors are primarily designed and constructed to resist outwardly directed loads imposed on the foundation of a structure. These outwardlydirected loads are transmitted to the soil at a greater depth by the anchors. Buried anchors have been used for thousands of years to stabilize structures. Various types of earth anchors are now used for the uplift resistance of transmission towers, utility poles, submerged pipelines, and tunnels. Anchors are also used for the tieback resistance of earth?retaining structures, waterfront structures, at bends in pressure pipelines, and when it is necessary to control thermal stress. In this research, we analyzed the uplift behavior of plate anchors in clay using a laboratory experiment to estimate the uplift behavior of plate anchorsunder various conditions. To achieve the research purpose, the uplift resistance and displacement characteristics of plate anchors caused by the embedment ratio, plate diameter, and loading rate were studied, compared, and analyzed for various cases.
혈관내 풍선 확장에 의한 대동맥 차단소생술이 적용된 돼지 복부 장기 조직의 기계적 거동 평가
왕일재,유지훈,허업,송승환,안효영,송찬희,이치승,유동만,Wang, Il Jae,You, Ji-Hun,Huh, Up,Song, Seunghwan,Ahn, Hyo Young,Song, Chan-Hee,Lee, Chi-Seung,Ryu, Dong-Man 한국재료학회 2020 한국재료학회지 Vol.30 No.4
Abdominal organs are the most vulnerable body parts under vehicle trauma, and there is high mortality from acute injuries in accidents. There are various ways to reduce this high mortality; one method is Resuscitative Endovascular Balloon Occlusion of the Aorta, which has recently become very popular as a minimally invasive alternative in the emergent management of patients with non-compressible hemorrhages below the diaphragm. However, high safety factor for patients is applied in actual clinical practice because there is no exact standard for the operating time. Therefore, in this study, the effects of the mechanical behavior of organ tissues for the duodenum, kidney, and liver on the operating time of Resuscitative Endovascular Balloon Occlusion of the Aorta is investigated in order to obtain data needed to establish standards of operating time. In characteristic analysis of organ tissues, uniaxial tensile test and compression test are conducted according to the operating time.
국부 부식을 가지는 심해저 파이프라인의 구조응답에 대한 전산 해석적 연구
최광호(Kwang-Ho Choi),이치승(Chi-Seung Lee),유동만(Dong-Man Ryu),구본용(Bon-Yong Koo),송준규(Joon-Kyu Song),이제명(Jae-Myung Lee) 한국해양공학회 2015 韓國海洋工學會誌 Vol.29 No.1
To meet the increasing demand for energy around the world, offshore and subsea energy development is constantly being conducted. This trend is accompanied by an increasing demand for pipeline installation, which brings numerous problems, including those related to accessibility, high pressure, and corrosion. Among these, corrosion is a primary factor in pipeline fractures, and can cause severe environmental and industrial damage. Hence, accurate corrosion assessment for corroded pipelines is very important. For this reason, the present study investigated the mechanical behavior of an idealized corroded subsea pipeline with an internal/external pressure load using the commercial FEA code ABAQUS. Then, the analysis result was compared with corrosion assessment codes such as ASME B31G, DNV RP F101, ABS. Finally, a fitness-for-service assessment was conducted.