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화재에 의한 콘크리트 충전 각형강관기둥의 온도분포에 대한 유한요소 해석
서수연 ( Seo Soo-youn ),박성희 ( Park Sung-hee ),안광현 ( Ahn Kwang-hyun ),윤승조 ( Yoon Seung-jo ),최기봉 ( Choi Ki-bong ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.2
In this research, fire resisting capacity of concrete filled slender rectangular steel tube (CFT) column was evaluated according to the finite element analysis. This finite element analysis of CFT column was conducted using Adina program, version 8.5.2. As major variables, the strength of concrete, heating time, and heating plane were established. At the first place, by performing heat transfer analysis of the member having considered thermal characteristics of materials, the temperature distribution within the cross section was predicted, and having closely reviewed temperature distribution data and considered mechanical properties, the researcher examined the behavior of CFT column and its temperature distribution at the time the fire breaks out. The results from analysis indicated that, in case of one to two planes each according to the heating plane, the increase rate of minimum temperature within the cross section through the central part was about 43% when heating it for 60 minutes, and about 23% when heating it for 120 minutes, and about 23% when heating it for 180 minutes, and that, in case of two to four planes, the increase rate of minimum temperature was about 17% when heating it for 60 minutes, and 14%, for 120 minutes, and 8%, for 180 minutes.
서수연(Seo, Soo-Yeon),최기봉(Choi, Ki-Bong) 한국구조물진단유지관리학회 2010 한국구조물진단학회 학술발표회논문집 Vol.2010 No.2
This paper reviews the disasters affecting the structural capacity of buildings in domestic. And the structural behavior of building with damaged columns due to a disaster was investigated by analytical method in order to the prepare basic data for the safe dismantling of damaged building. ZEUS-NL program was used to analyze the nonlinear behavior of building. As a result, the stress was concentrated to the beam that a column was removed, and as it goes up to higher stories, the moment change of an upper story appeared small and the deflection value also showed similar each other. This may result from hanging action of beams.
서수연(Seo Soo-Yeon),윤승조(Yoon Seung-Joe),윤현도(Yun Hyun-Do),최창식(Choi Chang-Sik),최기봉(Choi Ki-Bong) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.- No.-
A study is performed to analyze the status and research trend of retrofit method used in building structures at Korea. 152 Reinforced Concrete buildings with retrofitted members of 7238 in domestic after 1999 are gathered and reviewed. In addition, literature review about 191 research papers for retrofit of RC structure is performed. Results show that most widely applied retrofit method and target member are wire tension method and flexural member such as beam and slab. respectively. Recently. the use of Carbon Fiber Sheet(CFS) is increasing and many research results concerning it are provided. Therefore, it is recommended to develop an effective method to estimate the structural capacity of retrofitted member with CFS.
흙막이용 H-Pile과 R/C Wall로 구성된 지하합성벽에 관한 해석
서수연 ( Seo Soo-yeon ),윤승조 ( Yoon Seung-joe ),윤용대 ( Yoon Yong-dae ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.1
H-Piles are generally not used as structural members in the retaining wall system. But this is definitely a economic loss. Composite Basement Wall is combined with H-Pile and resists lateral soil pressure together. In this system, Shear connector as like a stud should be connected to the H-Pile and R/C Wall. Stud connectors are used to combine those member. The flexural capacity of composite basement wall which consists of steel beam and R/C wall is evaluated by non-linear analysis in this study.
화재 피해를 입은 철근콘크리트 보의 전단거동에 관한 실험적 연구
서수연 ( Seo Soo-yeon ),윤숭조 ( Yoon Seung-joe ),김영만 ( Kim Young-man ),최기봉 ( Choi Ki-bong ),정채명 ( Jung Chae-myuong ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.2
This paper presents experimental result about the shear behavior of RC beam damaged by fire mine parameters in the test are the exposed time to fire and shear span-to-depth ratio. Test result shows that the temperature of fire is mare effective to the strength of specimens then the exposed time. In case of experiencing same exposed time to fire, the variation of shear strength of specimens with different shear span-to-depth ratios in similar to those without fire damage.
서수연 ( Seo Soo-yeon ),윤승조 ( Yoon Seung-joe ),설지희 ( Seol Ji-hee ),김경태 ( Kim Kyoung-tae ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.1
The basic concept of performance-based seismic design is to design buildings to satisfy the target performance level for earthquake load that may occur during the term of use of those buildings. In such a concept of seismic design, therefore, there has been active research in displacement-based-design method controling that the response is within the given target displacement. Therefore, this paper aims to review the basic concept of displacement-based- design, to apply this to the seismic design of structural R/C shear walls for comparing with design results, and to propose a displacement design-based seismic evaluation method.