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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Association for Spatial Structures
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Journal DOI :
Korean Association for Spatial Structures
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Volume & Issues
Volume 8, Issue 6 - Dec 2008
Volume 8, Issue 5 - Oct 2008
Volume 8, Issue 4 - Aug 2008
Volume 8, Issue 3 - Jun 2008
Volume 8, Issue 2 - Apr 2008
Volume 8, Issue 1 - Feb 2008
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Inelastic Nonlinear Analysis of Arch Truss and Space Truss Structures
Kim, Kwang-Joong ; Jung, Mi-Roo ; Kim, Yeon-Tae ; Baek, Ki-Youl ; Lee, Jae-Hong ;
Journal of the Korean Association for Spatial Structures, volume 8, issue 5, 2008, Pages 47~58
Spatial structure is an appropriate shape that resists external force only with in-plane force by reducing the influence of bending moment, and it maximizes the effectiveness of structural system. With this character of the spatial structure, generally long span is used. As a result, large deflection is accompanied from the general frame. the structure is apt to result in a large deflection even though this structure experiences a small displacement in absence. Usually, nonlinear analysis in numerical analysis means geometric nonlinearity and material nonlinearity and complex nonlinearity analysis considers both of them. In this study, nonlinear equation of equilibrium considering geometric nonlinearity as per finite element method was applied and also considered the material nonlinearity using the relation of stress-strain in element. It is applied to find unstable result for tracing load-deflection curve in the numerical analysis tech. especially Arc-length method, and result of the analysis was studied by ABAQUS a general purpose of the finite element program. It is found that the present analysis predicts accurate nonlinear behavior of plane and space truss.
An Experimental Study on Distribution of Ultimate Strength of Concrete-Filled Steel Tube Columns according to Concrete Strength and Section Properties Ratio
Jang, Gab-Chul ; Chang, Kyong-Ho ;
Journal of the Korean Association for Spatial Structures, volume 8, issue 5, 2008, Pages 59~65
Recently, to improve the load carrying capacity of column structures such as bridge piers, application to concrete-filled steel tube(CFT) type columns are increased more and more. To design the concrete-filled steel tube(CFT) columns in accuracy, influence of material and geometry properties and aspect ratio on ultimate strength of the concrete-filled steel tube column is investigated by experimental researches. In this investigation, the ultimate strength distribution of the concrete-filled steel tube column in accordance with diameter-thickness ratio(D/t) and steel-concrete area ratio(As/Ac) are clarified by the compressive tests. Futhermore, parametric experimental investigation on concrete target strength is performed. It was known from experimental observation that ultimate strength of concrete-filled steel tube column under axial compressive loading more depends on section properties of steel tube rather than concrete strength.
Computational Modelling Method by Using the Natural Frequencies of Five-Story Stone Pagoda in Chongnimsa Site
Lee, Sung-Min ; Lee, Ki-Hak ; Park, Sun-Woo ; Suh, Man-Chul ; Lee, Chan-Hee ;
Journal of the Korean Association for Spatial Structures, volume 8, issue 5, 2008, Pages 67~74
Multi-layered stone masonry monuments, such as stone pagoda can be modeled as a multi-degrees of freedom system. The dynamic behavior of these structures are mainly influenced by contour condition of contacting surface of stones. In this case the mass of the system can be easily estimated, mean while the estimation of stiffness at junction is not simple. In this paper a method for estimating the spring constant at the contacting surface of stone in proposed. This paper describes a method of computational modelling technique for structural analysis of stone pagodas using measurement of natural frequency and eigenvalue analysis. For this purpose Five story stone pagoda in Cchongnimsa site was selected as a model.
Vibration Control of High-rise Building Structures using Top-story Isolation Systems
Kim, Tae-Ho ; Kim, Hyun-Su ;
Journal of the Korean Association for Spatial Structures, volume 8, issue 5, 2008, Pages 75~82
In this study, the possibility of vibration control of high-rise building structures by applying top-story isolation has been investigated. To this end, El Centro NS (1940) earthquake load is applied to 20- and 50-story building structures for numerical analysis. Artificial wind loads are used to evaluate the serviceability of example structures against wind vibration. As the number of isolated stories of example buildings is changed, structural responses has been evaluated to investigate optimal isolated building mass. And the natural period of isolation systems for top-story isolation is varied to investigate the improvement of control performance compared with the fixed base structure. Based on the analytical results, the top-story isolation system can be used as a hued mass damper and effectively reduce the structural responses of high-rise buildings against wind and seismic loads.
A Study on the Compression Strength of Structural Steel Tube Applied in Spatial Structure
Baek, Ki-Youl ;
Journal of the Korean Association for Spatial Structures, volume 8, issue 5, 2008, Pages 83~93
Space truss is a rational system which forming large span in spatial structure and the steel tube is used well as a structure member in truss system. This study includes coupon test and Stub-column compression test on the structural steel tube. The compression test of Stub-column was performed to characterize and quantify the material characteristic and strength of column. In this study, we also researched the matter of compatibility, in which we compared the experiment formula and the abstract formula by the application of the LSD standard formula, SSRC and ECCS multiple column curve.
A Study on the Slipping Problem for Cable-Membrane Structures
Kim, Jae-Yeol ; Kang, Joo-Won ; Park, Sang-Min ;
Journal of the Korean Association for Spatial Structures, volume 8, issue 5, 2008, Pages 95~105
The objective of this study is find out the stressed condition, slipped direction and slipped dimension when some elements of cable-membrane structures are slipped from it's initially designed coordinates by external loads as wind or non uniform load and so on. In order to search the slipped behaviors of cable-membrane structures, a ALE finite element formulation is introduced. In these procedures, a stiffness matrix related with ALE concept is formulated and a FE analysis program for cable-membrane structures with slipped elements is developed.