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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.
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.
콘크리트 내에 매립된 헤드철근의 인장거동에 대한 유한요소해석
서수연 ( Seo Soo-yeon ),윤승조 ( Yoon Seung-joe ),하기주 ( Ha Gee-joo ),윤용대 ( Yoon Yong-dae ),권영근 ( Kwon Young-geun ),신금종 ( Shin Geum-jong ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.2
The objective of this paper is to verify the effect of embedded depth and width of head to the tensile capacity of head reinforcement embedded in concrete. FEM(Finite Element Method) analysis is conducted by using ADINA program (version 8.4) for the embedded reinforcement. Main variables in the analysis are embedded depth and width of head. Analysis result showed that the stiffness and strength depended on the embedded depth of head reinforcement. However, the increment of stiffness and strength were not high even if the width of head increased. On the other hand, flexural deformation occurred at the head when the width of head was increased.
서수연 ( Seo Soo-yeon ),윤승조 ( Yoon Seung-joe ),하기주 ( Ha Gi-joo ),윤용대 ( Yoon Yong-dae ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.1
Recently, the construction demand for large underground space has been in creased so that the excavation technology for underground construction of building has been being developed. The construction of sheeting pile is for resisting the lateral pressure of soil during the excavation. In general, conventional sheeting H-pile is often used as a temporary member installed upon construction of outer retaining wall at basement floor. In CBW (Composite Basement Wall), R/C basement wall is combined with H-Pile and resists lateral soil pressure together. In this study, a total of five specimens with simple-ends were tested. Main parameters were the depth of basement wall and arrangement of shear connectors. The purpose of this experiment is to evaluate the flexural capacity to offer the raw-data of composite basement wall.
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 ),조태섭 ( Cho Tae-seup ),윤승조 ( Yoon Seung-joe ),최기봉 ( Choi Ki-bong ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.1
This paper presents thermal analysis on the RC column under constant axial force simulating low part of medium height frame building. Material property of concrete and reinforcement for the thermal loading is reviewed from various papers. 2D nonlinear model for example column with 30mm of cover thickness is established in ADINA progam and several analyses are performed. Main parameters in the analysis are the variation of concrete strength and direction of thermal loading. 24MPa, 45MPa and 60MPa are prepared for concrete strength. Uniformally distributed loading and reversed triangle loading for both sides are considered. And analysis for the case of thermal loading only for one side is also dealt with. Analysis result showed that the required fire resisting time of the example column closer to 60 minute which is calculated from the axial deformation due to the thermal loading. The reinforcement reaches to the it's yield strength at 40 minute while concrete didn't arrive to it’s compressive strength until 110 minute.
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.