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설지희(Seol Ji Hee),서수연(Seo Soo Yeon),윤승조(Yoon Seung Joe),윤현도(Yun Hyun Do),최창식(Choi Chang Sik),최기봉(Choi Gi Bong) 한국구조물진단유지관리학회 2006 한국구조물진단학회 학술발표회논문집 Vol.10 No.1
As time goes up, structural capacity of members decreases in R/C structures. The deterioration of the capacity is mainly due to the corrosion of materials, environmental pollution, etc. Thus it is necessary to develop the method for repair and retrofit of structures in order to ensure structural safety of members. Recently, a method using Carbon Fiber Sheet (CFS) has been widely recognized as good one for strengthening members. Several flexural tests for beam strengthened with CFS show that CFS of the beam is ripped by tension or separated from the concrete face at failure. The ultimate strength of the beam, also, depends on those failure patterns. The flexible capacity of RC members retrofitted with CFS depends on bond capacity between concrete and CFS. But, it is not ease to develop the bond capacity due to various causes and it is apt to be lost as time goes by. In this paper, an analysis is performed to predict nonlinear behavior of RC member retrofitted by CFS and analysis result is compared with test result to verify the usefulness of it.
설지희 ( Seol Ji Hee ),서수연 ( Seo Soo Yeon ),윤승조 ( Yoon Seung Joe ),윤현도 ( Yun Hyun Do ),최창식 ( Choi Chang Sik ),최기봉 ( Choi Gi Bong ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.1
As time goes up, structural capacity of members decreases in R/C structures. The deterioration of the capacity is mainly due to the corrosion of materials, environmental pollution, etc. Thus it is necessary to develop the method for repair and retrofit of structures in order to ensure structural safety of members. Recently, a method using Carbon Fiber Sheet (CFS) has been widely recognized as good one for strengthening members. Several flexural tests for beam strengthened with CFS show that CFS of the beam is ripped by tension or separated from the concrete face at failure. The ultimate strength of the beam, also, depends on those failure patterns. The flexible capacity of RC members retrofitted with CFS depends on bond capacity between concrete and CFS. But, it is not ease to develop the bond capacity due to various causes and it is apt to be lost as time goes by. In this paper, an analysis is performed to predict nonlinear behavior of RC member retrofitted by CFS and analysis result is compared with test result to verify the usefulness of it.
임정은(Lim Jeong-Eun),설지희(Seol Ji-Hee),김경태(Kim Kyoung Tea),서수연(Seo Soo-Yeon),윤승조(Yoon Seung-Joe) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.- No.-
Recently, in the seismic design focused on the Displacement- based design but it has not systematized because of insufficient its study. Especially, the shear wall as lateral-resistant system play an important part in the structure design due to efficiently withstand earthquake loading. The objective of this study is to suggest a suitable nonlinear analysis method to predict the structural behavior of high-rise RC wall structures that can not be tested on account of the difficulty of experiment and economical efficiency estimating. As a result of the static analysis to exist structures, the RWS-N specimen without opening was higher than the specimen with opening in ultimate strength. In addition, the strength was lower and the displacement was more higher especially in the low floor when the opening locate farther from the center of section. In result of the dynamic analysis to exist structures, the specimen without opening indicated that the higher strength and the lower displacement. The displacement also increased when the opening locate farther from the center of section. As previously discussed. the results of static and dynamic analysis showed the similar behavior in the ultimate strength and displacement.
임정은 ( Lim Jeong-eun ),설지희 ( Seol Ji-hee ),김경태 ( Kim Kyoung Tea ),서수연 ( Seo Soo-yeon ),윤승조 ( Yoon Seung-joe ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.1
Recently, in the seismic design focused on the Displacement- based design but it has not systematized because of insufficient its study. Especially, the shear wall as lateral-resistant system play an important part in the structure design due to efficiently withstand earthquake loading. The objective of this study is to suggest a suitable nonlinear analysis method to predict the structural behavior of high-rise RC wall structures that can not be tested on account of the difficulty of experiment and economical efficiency estimating. As a result of the static analysis to exist structures, the RWS-N specimen without opening was higher than the specimen with opening in ultimate strength. In addition, the strength was lower and the displacement was more higher especially in the low floor when the opening locate farther from the center of section. In result of the dynamic analysis to exist structures, the specimen without opening indicated that the higher strength and the lower displacement. The displacement also increased when the opening locate farther from the center of section. As previously discussed, the results of static and dynamic analysis showed the similar behavior in the ultimate strength and displacement
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.
변위기반설계법에 의한 철근콘크리트 전단벽의 내진설계 및 성능평가
서수연(Seo Soo-Yeon),윤승조(Yoon Seoung-Joe),설지희(Seol Ji-Hee) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.1
The basic concept of Performance-Based Seismic Design(PBSD) 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 into Displacement-Based Design(DBD) so that the response is controlled within the recently given target displacement. This paper aims to review the basic concept of DBD, to apply it to the seismic design of structural R/C shear walls for comparing with design results by the existing seismic design process which is Force-Based Design(FBD) method, and to study the usefulness of DBD in evaluating the seismic capacity of shear wall. Five and ten story shear wall buildings with various aspect ratio are designed by both DBD and FBD, and the results are compared each other. Also seismic evaluation for shear wall structure is performed by using DBD and Capacity Spectrum Method(CSM). The result shows that required base shear calculated by DBD is less than that by FBD. It means that more economic design is possible when DBD is used for seismic design of shear wall structure. In the evaluation of seismic capacity for existing shear wall structure, DBD method requires lower seismic capacity than CSM.
서수연(Seo Soo-Yeon),윤승조(Yoon Seung-Joe),설지희(Seol Ji-Hee),김경태(Kim Kyoung-Tae) 한국구조물진단유지관리학회 2007 한국구조물진단학회 학술발표회논문집 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.