스팬 300m 단층래티스 돔의 접합부조건에 따른 좌굴 특성

윤석호,정환목 한국복합신소재구조학회 2018 복합신소재구조학회논문집 Vol.9 No.3

세계적으로 대공간 건축물의 수요가 점점 증가하고 있는 추세에 따라 단층 래티스 돔 구조 시스템은 단순한 외관과 간단한 그리드 패턴으로 인해 300m 공간 구조로 널리 채택 될 것입니다. 선행 연구에서 300m 길이의 단층 래티스 돔에 자중 및 적설 하중을 가했을 때 강재를 이용한 골조 시스템을 이용하여 단층 래티스 돔의 구조 안정성을 대략적으로 파악 하였다. 강성 연결로 되어있는 300m 단층 래티스 스팬의 스팬에 대한 안정성 연구는 이미 많이 수행되었지만 연결부의 강성에 따른 좌굴특성에 대한 연구는 많지 않습니다. 따라서 연구자들이 실제 설계에 적용 할 연구 데이터가 많지 않기 때문에이 구조의 다양한 연결 조건을 연구 할 필요가 있다. 본 연구의 목적은 연결 조건에 따라 300M 단층 래티스 스팬의 좌굴 특성을 분석하여 대공간 단층 래티스 돔의 설계자들에게 도움을 주고자 한다. Single-layer latticed structural system will be widely adopted as a span 300m spatial structure because of simple appearance and simple grid patterns. In the previous study, the structural stability of a single-layer lattice dome was roughly grasped by a frame structural system using a ready-made steel when a self-weight and a snow load were applied to a single-layer latticed dome having a span of 300 m. A stability study of a span 300m single-layer latticed dome with rigid joint have already been performed. Therefore, it is necessary to study various connection’s conditions of this structure because the researchers do not have much research data to apply to actual design. The purpose of this study is to verify the buckling characteristics of span 300M single-layer latticed domes according to connection’s conditions.

스팬 300m 단층래티스 돔의 라이즈-스팬비에 따른 좌굴 특성

윤석호,이동우,정환목 한국복합신소재구조학회 2017 복합신소재구조학회논문집 Vol.8 No.4

As the national income grows, there is a growing demand for buildings that require long span structures such as exhibition facilities, sports facilities, special industrial facilities, and aerospace facilities. Single-layer latticed dome is one of representative llong span structures. But single layer latticed domes are apt to occur the unstable phenomena that are called “buckling” because of the lack of strength of members and instability of structures, etc. In the previous study, the structural stability of a single-layer lattice dome was roughly grasped by a frame structural system using a ready-made steel when a self-weight and a snow load were applied to a single-layer latticed dome having a span of 300 m and a height of 75 m. However, a systematic study of a 300m single layer lattice dome with various rise-span ratios was not performed. Therefore, it is necessary to study various conditions of this structure because the researchers do not have much research data to apply to actual design. Therefore, the purpose of this study is to verify the buckling characteristics of span 300M single-layer latticed dome with rise-span ratio

H형강을 사용하는 스팬 300m 단층래티스 돔의 좌굴 특성

윤석호,정환목 한국복합신소재구조학회 2019 복합신소재구조학회논문집 Vol.10 No.6

For large-space single-layer lattice domes, aluminum, wood or steel are mainly used in structural framing materials. However, in the case of the span 300 meters of super-large space, steel will be more advantageous than aluminum or wood. Meanwhile, in a single-layer lattice dome with a span of less than 250 meters, the cross-section shape of frame is mostly used in circular steel, but there is also a case of research using square tube or H-shaped steel. However, there are few examples of studies using H-shaped steel sections on a span of 300m or more. However, If H-shaped steel is used not only for the usability of ready-made materials but also for the convenience of roof finish construction, it would be very advantageous from the point of view of construction. The purpose of this study is to verify the buckling characteristics of span 300M single-layer latticed domes using H-section. 대공간 단층래티스 돔의 골조프레임 재질로는 알루미늄, 목재, 그리고 강재 등이 사용된다. 소규모 돔에서는 알루미늄, 목재 등이 사용되는 사례도 많이 있지만, 300m 이상의 대공간 돔에서는 강재를 주로 사용하며, 강재의 단면 형상은 강관또는 H형강 등이 유리하다. H형강은 기성재가 시중에 판매되고 있어 다양한 종류를 선택할 수 있으며, 지붕 마감 공사 시 시공성이 우수하다. 본 연구의 목적은 H형강 단면을 사용한 스팬 300m 단층래티스 돔의 좌굴특성을 연구하는 것이다.

스팬 300m 구형래티스 돔의 형상과 하중조건에 따른 안정성 검토

윤석호,이동우,정환목 한국복합신소재구조학회 2017 복합신소재구조학회논문집 Vol.8 No.4

In recent years, single layer latticed domes have attracted many designers and researchers’s attention all over the world, because single layer latticed domes as space structure are of great advantage in not only mechanical rationality but also function, fabrication, construction and economic aspect. Yamada developed the shape factor S which represents the shape of spherical latticed dome from a structural perspective as well as a geometric perspective. According to a prior study, the structural behavior and the buckling characteristics of the latticed dome were mostly noticeable when the shape factor of latticed dome was in the range of 1.5 to 5. That is, S, in the range of 1.5 to 5, are able to estimate not only overall buckling, but also member buckling and nodal buckling. In this study, we developed shape models using various size of members with the fixed rise-span ratio. One particular characteristic of the latticed dome is that it is not only light in weight but also high in strength. But the aiming at the use of light-weight materials and at the minimized section of members may result in buckling to cause an unstable state of the overall structure when the external force reaches a limitation. Especially, the structural strength is disadvantageous to the snow loads than the earthquake loads because of light-weight, and is greatly affected by the conditions of loading. This paper is to develop the structural stability according to the shapes and load conditions for single-layer latticed spherical dome with 300m span.

스팬 300m 단층래티스 구형돔의 부재배치에 따른 안정성 검토

윤석호,정환목 한국복합신소재구조학회 2016 복합신소재구조학회논문집 Vol.7 No.4

In recent years, single layer latticed domes have attracted many designers and researchers's attention all over the world, because single layer latticed domes as space structure are of great advantage in not only mechanical rationality but also function, fabrication, construction and economic aspect. One of the most important factor, in building of single-layer single-layer lattice spherical dome with 300m span, is to ensure the structural safety. Network pattern of single layer latticed domes can be infinitely taken into account. The typical network patterns are triangle, square, hexagon etc. Especially triangular network pattern has mechanically more advantage than the other network patterns because of having not only a large equivalent shearing rigidity but also a large equivalent bending rigidity and axial rigidity. Among the triangular network pattern, that is, 3 way grid pattern, there are many mechanical differences according to the arranging methods of members. In order to ensure the structural stability of single-layer latticed dome with 3 way grid, designers are required to maintain a constant member length and the member angle. In order to achieve this, it is important to search the member array that the standard deviation of the member lengths and angles is the smallest. This paper is to develop the arrangement of member and to verify its validity for single-layer latticed spherical dome with 300m span.

300m 단층 래티스 돔의 면진 장치에 대한 지진 반응 해석

박강근,정미자,이동우 한국공간구조학회 2018 한국공간구조학회지 Vol.18 No.3

The objective of this study is to investigate the response reducing effect of a seismic isolation system installed between 300m dome and supports under both horizontal and vertical seismic ground motion. The time history analysis is performed to investigate the dynamic behavior of single layer lattice domes with and without a lead rubber bearing seismic isolation system. In order to ensure the seismic performance of lattice domes against strong earthquakes, it is important to investigate the mechanical characteristics of dynamic response. Horizontal and vertical seismic ground motions cause a large asymmetric vertical response of large span domes. One of the most effective methods to reduce the dynamic response is to install a seismic isolation system for observing seismic ground motion at the base of the dome. This paper discusses the dynamic response characteristics of 300m single layer lattice domes supported on a lead rubber seismic isolation device under horizontal and vertical seismic ground motions.

스팬 300m 대공간 단층래티스 돔의 부재 접합조건에 따른 안정성 검토에 관한 연구

정환목 ( Jung Hwan-mok ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1

This study is to estimate the buckling characteristics of single-layer latticed dome with Span 300m according to junction’s conditions of member.

스팬 300m 단층래티스 돔의 부재배치에 관한 연구(Ⅱ)

정환목(Jung, Hwan-Mok),윤석호(Yoon, Seok-Ho),이상주(Lee, Sang-Ju),김철환(Kim, Cheol-Hwan) 대한건축학회 2016 대한건축학회 학술발표대회 논문집 Vol.36 No.2

스팬 300m 단층래티스 돔의 부재배치에 관한 연구Ⅰ

정환목(Jung, Hwan-Mok),윤석호(Yoon, Seok-Ho),이동우(Lee, Dong-Woo),김철환(Kim, Cheol-Hwan) 대한건축학회 2016 대한건축학회 학술발표대회 논문집 Vol.36 No.2