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곽의신(Kwak, Eui-Shin),기창군(Ki, Chang-Gun),이상호(Lee, Snag-Ho),손수덕(Shon, Su-Deok),이승재(Lee, Seung-Jae) 대한건축학회 2016 대한건축학회 학술발표대회 논문집 Vol.36 No.2
Occurrence and effect of horizontal load, such as the recent frequent earthquakes and seismic load and wind load due to the increase of demand for high-rise buildings are no longer able to not consider the possibility of damage and secondary damage of the exterior panel. Therefore, in this study, by the exterior panels that using moving clips to follow the displacement that occurs in the structure of the building, there is the object of the present invention is to prevent damage and falling off of the exterior panels. Perform the finite element analysis and the actual large shaking table test of the exterior panels, to verify the structural performance, satisfies the non-structural elements seismic design for Korean building code.
이동 클립을 이용한 건축물 외장재의 구조적 성능에 관한 연구
곽의신(Kwak, Eui-Shin),기창군(Ki, Chang-Gun),이상호(Lee, Sang-Ho),손수덕(Shon, Su-Deok),이승재(Lee, Seung-Jae) 대한건축학회 2017 大韓建築學會論文集 : 構造系 Vol.33 No.12
A recent global trend in the increase of earthquake-related disasters has become so frequent as to cause various damages to a wide range of mid- to high-rise buildings. Particularly, more attention is being paid to the effect of horizontal load in high-rise buildings not only on the key structural elements of the structures, but also on the possibility of the secondary damages to them due to the failure of exterior panels, which are non-structural elements, but such damages are difficult to cope with as they may be caused by unexpected changes. The present study examined exterior panels using moving clips to prevent such secondary damages on the non-structural elements and analyzed the structural performance of these exterior panels through the finite element analysis and the shaking table test. The analysis results showed that the exterior panels using moving clips satisfied the structural performance against the allowable story drift of KBC2009 and the safety of the exterior panels was verified by the shake table test.
천장 브래킷형 모듈러 시스템의 브래킷 길이와 볼트에 따른 내진성능평가
곽의신(Kwak, Eui-Shin),강창훈(Kang, Chang-Hoon),손수덕(Shon, Su-Deok),이승재(Lee, Seung-Jae) 대한건축학회 2018 大韓建築學會論文集 : 構造系 Vol.34 No.4
In regard to modular systems, new methods, as well as middle and high-story unit design ideas, are currently being studied. These studies need to focus on the enhanced stiffness and seismic performance of these connections, and see that the development of fully restrained moment connections can improve the seismic performance. For this reason, this study evaluates the performance of the connections of the ceiling bracket-typed modular system through repeated loading tests and analyses. In order to compare them with these modular units, new unit specimens with the bracket connection being different from that of the traditional modular unit specimens were designed, and the results of repeated loading tests were analyzed. In the traditional units, the structural performances of both welding connection and bolt connection were evaluated. In regard to the testing results, the initial stiffness of the hysteresis curve was compared with the theoretical initial stiffness, and the features of all specimens were also analyzed with regard to the maximum moment. In addition, the test results were examined with regard to the connection flexural strength of the steel special moment frame specified under the construction criteria KBC2016. The connections, which were proposed in the test results, were found to be fully restrained moment connections for designing strong column-weak beams and meeting the requirements of seismic performance of special moment frames.
고충진 압출성형 합성목재를 이용한 모듈러 돔의 구조모델링에 관한 연구
손수덕,곽의신,이승재 한국구조물진단유지관리공학회 2015 한국구조물진단유지관리공학회 논문집 Vol.19 No.2
This paper aims at developing an environmentally friendly modular dome structure system with highly filled extrusion wood-plastic composite (WPC) member, and manufacturing a real-size specimen by modularizing members and nodes. The member used in the model is the WPC member with 70% wooden fiber contests, which is higher then previous WPC one. Its members and nodes are modularized by analyzing geometric characteristics of icosahedral-based geodetic dome. Applicapability of the 6ea prototype nodes and 3ea prototype members to the modular dome is examined with the results of the modulaization and the making process for the real-size specimen. Besides, from the analysis results, the lowest buckling mode is expected to be a nodal buckling on a node near the boundary.
고충진 압출성형 합성목재를 이용한 모듈러 돔의 구조모델링에 관한 연구
손수덕,곽의신,이승재 한국구조물진단유지관리공학회 2015 한국구조물진단유지관리공학회 논문집 Vol.19 No.2
This paper aims at developing an environmentally friendly modular dome structure system with highly filled extrusion wood-plastic composite (WPC) member, and manufacturing a real-size specimen by modularizing members and nodes. The member used in the model is the WPC member with 70% wooden fiber contests, which is higher then previous WPC one. Its members and nodes are modularized by analyzing geometric characteristics of icosahedral-based geodetic dome. Applicapability of the 6ea prototype nodes and 3ea prototype members to the modular dome is examined with the results of the modulaization and the making process for the real-size specimen. Besides, from the analysis results, the lowest buckling mode is expected to be a nodal buckling on a node near the boundary. 본 연구의 목적은 고충진 합성목재를 이용하여 친환경 모듈러 돔 구조시스템을 개발하고 부재와 절점을 모듈화하여 실제 구조체을 제작하는 것이다. 기존의 합성목재에 비해 높은 70% 목분함량 합성목재를 돔 구조모델의 부재로 이용하였고, 정이십면체 기반 지오데직 돔의기하학적 특성을 분석하여 절점과 부재를 모듈화 하였다. 돔의 제작을 위한 모듈화와 실제 구조물의 제작과정의 연구결과로부터 6가지 절점과 3개의 부재종류의 모듈러 돔에 대한 적용성을 검토할 수 있었다. 또한 해석결과에서 최저차 좌굴모드는 경계부의 절점에서 절점좌굴이 예상되었다.
용접형과 무용접형 하지철물의 수평변위 추종능력에 관한 연구
이돈우,곽의신,손수덕,이승재,Lee, Don-Woo,Kwak, Eui-Shin,Shon, Su-Deok,Lee, Seung-Jae 한국공간구조학회 2016 한국공간구조학회지 Vol.16 No.4
Building hardware joints are welded in most cases, which have risks of fire and explosion. Besides, the secondary damage of the destruction of the welded parts can be caused by the horizontal displacement of the structure due to earthquake or wind load. This paper compared the horizontal displacement following abilities of welded building hardware and non-welded building hardware. To do this, We conducted actual formation shake table test, and checked on the horizontal displacement following ability of structure by comparing their responses to earthquake load. We made the 2m-high framework to examine the responses of the actually constructed building hardwares, and analyzed the displacement responses of the welded-typed, non-welded-typed, and cruciform bracket building hardwares. We conducted the test by increasing acceleration rate until displacement reached 40mm corresponding to allowable relative story displacement II. The result of the test showed that the building hardware using welding work made cracking and breakage on welded connections of welded building hardware, but non-welded building hardware with no use of welding work and cruciform bracket building hardware make no problem, and that non-welded building hardware is superior to that of the welded building hardware in the horizontal displacement following ability due to earthquake or wind load.