수평하중을 받는 철근콘크리트 원통쉘의 탄소성 균열해석

박강근 대한건축학회지회연합회 1999 대한건축학회연합논문집 Vol.1 No.1

임퍼펙션을 고려한 100m 단층 래티스 돔의 지진 응답

박강근,이동우,Park, Kang-Geun,Lee, Dong-Woo 한국공간구조학회 2019 한국공간구조학회지 Vol.19 No.1

굴곡형 케이블-막 지붕 시스템의 비선형 해석

박강근,권익노,이동우 한국공간구조학회 2017 한국공간구조학회지 Vol.17 No.3

The objective of this study is to estimate the mechanical characteristics and nonlinear behaviors on the geometric nonlinear analysis of curved cable-membrane roof systems for long span lightweight roof structures. The weight of a cable-membrane roof dramatically can reduce, but the single layer cable-membrane roof systems are too flexible and difficult to achieve the required structural stiffness. A curved cable roof system with reverse curvature works more effectively as a load bearing system, the pretension of cables can easily increase the structural stiffness. The curved cable roof system can transmit vertical loads in up and downward direction, and work effectively as a load bearing structure to resists self-weights, snow and wind loads. The nonlinear behavior and mechanical characteristics of a cable roof system has greatly an affect by the sag and pretension. This paper is carried out analyzing and comparing the tensile forces and deflection of curved roof systems by vertical loads. The elements for analysis uses a tension only cable element and a triangular membrane element with 3 degree of freedom in each node. The authors will show that the curved cable-membrane roof system with reverse curvature is a very lightweight and small deformation roof for external loads.

개폐식 방사형 케이블 지붕 시스템의 역학적 특성

박강근,이동우,최동일 한국공간구조학회 2017 한국공간구조학회지 Vol.17 No.2

The objective of this study is to analysis the mechanical characteristics on the geometric nonlinear behavior of radial cable roof systems for long span retractable cable roof structures. The retractable roof is designed as a full control system to overcome extreme outdoor environments such as extreme hot or cold weather, strong wind or sunlight, and the cable roof greatly can reduce roof weight compared to other rigid structural system. A retractable cable roof system is a type of structures in which the part of entire roof can be opened and closed. The radial cable roof is an effective structural system for large span retractable roofs, the outer perimeter of the roof is a fixed membrane roof and the middle part is a roof that can be opened and closed. The double arrangement cables of a radial cable truss roof system with reverse curvature works more effectively as a load bearing cables, the cable system can carry vertical load in up and downward direction. In this paper, to analyze the mechanical characteristics of a radial cable roof system with central posts, the authors will investigate the tensile forces of bearing cables, stabilized cables, ring cables, and the deflection of roof according to the height of the post or hub that affects the sag ratio of cable truss. The tensile forces of the cables and the deflection of the roof are compared for the cases when the retractable roof is closed and opened.

새그 비를 고려한 케이블 네트 구조물의 역학적 거동

박강근,이동우 한국공간구조학회 2016 한국공간구조학회지 Vol.16 No.3

Cable network system is a flexible lightweight structure which curved cables can transmit only tensile forces. The weight of cable roof dramatically can reduce when the length becomes large. The cable network system is too flexible, most cable systems are stabilized by pretension forces. The tensile force of cable system is greatly influenced by the sag ratio and pretension forces. Determining initial sag ratio of cable roof system is essential in a design process of cable structures. Final sag ratio and pretension depends on initial installed sag and on proper handling during installation. The design shape of cable system has an affect on the sag and pretension, and must be determined using well-defined design philosophy. This paper is carried out the comparative data of the deflection and tensile forces on the geometric non-linear analysis of cable network systems according to sag ratio. The study of cable network system is provided to technical informations for the design of a large span cable roof, analytical results are compared with the results of other researchers. Structural nonlinear analysis of systems having cable elements is relatively complex than other rigid structural systems because displacements are large as a reason of flexibility, initial prestress is applied to cables in order to increase the rigidity, and then divergence of nonlinear analysis occurs rather frequently. Therefore, cable network systems do not exhibit a typical nonlinear behavior, iterative method that can handle geometric nonlinearities are necessary.

케이블의 역학적 특성 및 인장실험

박강근,이장복,김재봉,Park, Kang-Geun,Lee, Jang-Bog,Kim, Jae-Bong 한국공간구조학회 2007 한국공간구조학회지 Vol.7 No.3

라이즈 스팬 비에 의한 200m 허니컴 래티스 돔의 동적 응답 분석

박강근,정미자 한국공간구조학회 2019 한국공간구조학회지 Vol.19 No.2

The objective of this study is to analysis the seismic response of 200m spanned honeycomb lattice domes under horizontal and up-down ground motion of El Centro earthquake. For the analysis of seismic response of the honeycomb lattice domes by rise/span ratio, the time history analysis is used for the estimation of the dynamic response. The low rise lattice dome is less deformed and less stressed than the high rise lattice dome for the earthquake ground motion. The 3-dimensional earthquake response is not significantly different the dynamic response of one directional ground motion. The earthquake response of domes with LRB isolation system is significantly reduced for the asymmetric vertical deformation and the horizontal and vertical accelerations.

폴리에스터 막재의 역학적 특성에 관한 기초시험

박강근,윤승현,이장복,Park, Kang-Geun,Yoon, Seoung-Hyun,Lee, Jang-Bok 한국공간구조학회 2010 한국공간구조학회지 Vol.10 No.2

막 구조는 자유로운 형태, 경량성, 내구성, 햇빛 투광성 및 균질성 때문에 전 세계적으로 현대 건축물에 다양하게 사용되어 왔다. 새로운 막 재료의 개발로 새로운 건축 구조설계에 대한 가능성을 열어가고 있다. 최근 주로 사용되는 막 구조의 지붕 재료에는 PVC, PVF, PVDF, PTFE 코팅 막재 및 ETFE 막재가 수로 사용되고 있다. 건축용 막은 내화성, 강도 부족, 인열강도, 내구성 및 탄성 등에 대한 몇가지 문제점들을 가지고 있다. 이러한 문제점들을 평가하기 위해서 본 연구에서는 PVDF 코팅 폴리에스터 막재에 대한 인장강도, 인열 강도 및 반복하중거동 시험을 실시하여 건축용 막재의 기초적인 역학적 특성을 분석하고자 한다. 막재의 탄성계수는 337.30~1257.63N/$mm^2$, 신율은 17.90~26.91%로 주어졌다. Membrane structures are now used in various ways throughout the world with the merits of free shape, lightness, durability, sunlight transmittance and homogeneous material. The development of new membrane material opened up new possibility for the design of new building structures. Recently it was mainly used PVC, PVF, PVDF, PTFE, ETFE membrane for using the roofing material of membrane structures. Some problems of architectural membrane have fire proofing, lack of strength, tear resistance, durability and elasticity. For the estimation of this problems, it will be tested the basic mechanical properties of membrane material about tensile strength, tearing resistance and repeated loading behavior. Elastic modulus is 337.30~1257.63N/$mm^2$, and strain is 17.90~26.91%.

Elasto-plastic Analysis of Circular Cylindrical Shell under Horizontal Load by Rigid-bodies Spring Model

박강근 한국공간구조학회 2006 한국공간구조학회지 Vol.6 No.3

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.