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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 13, Issue 4 - Dec 2013
Volume 13, Issue 3 - Sep 2013
Volume 13, Issue 2 - Jun 2013
Volume 13, Issue 1 - Mar 2013
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Experimental Study of Glass Fiber Reinforced Plastic-Steel Connection for Decorative Column
Hwang, Kyung-Ju ; Choi, Chui-Kyung ;
Journal of the Korean Association for Spatial Structures, volume 13, issue 4, 2013, Pages 41~47
DOI : 10.9712/KASS.2013.13.4.041
For the artistic column used by Glass Fiber Reinforced Plastic(GFRP), the connection of steel with GFRP were needed. Due to the fabricating characteristics of hand laminating, GFRP surfaces had to be connected. Because there were no existed data of these connection, experimental study has to be followed so that the structural strength and buckling mode could be investigated. In this paper, therefore, the axial tests of steel with GFRP were performed. The connection of GFRP`s surfaces could be also tested as well. As a result, it could be figured out that the strength of these connections were determined by the adhesive strength.
A Study on Lateral Buckling of Beam String Structures
Kim, Jae-Yeol ;
Journal of the Korean Association for Spatial Structures, volume 13, issue 4, 2013, Pages 49~56
DOI : 10.9712/KASS.2013.13.4.049
Beam string structures(BSS) are one kind of efficient structure system because the bending moment in the beams is reduced greatly through the struts and the strings. As the struts in BSS are used as middle supports to the beam and always in compression, the buckling of the struts should be avoided. This paper investigates the lateral buckling of the struts in BSS. Firstly, the strut of a one-strut BSS is simplified into an analytical model by considering load is formulated and some special cases of the model are analyzed. Finally, the lateral buckling load of the strut is numerically examined by means of parameter studies. It is known that, because on end of the struts is jointed to the beam while the other end is connected to the strings, the buckling of the struts not only depends on the length of the struts and the stiffness of the joints, but also depends on the rise and the lateral stiffness of the beam, the layout of the strings and the number of the struts.
Seismic Response of Multi-Supported Spatial Structure under Seismic Excitation
Kim, Gee-Cheo ; Kang, Joo-Won ;
Journal of the Korean Association for Spatial Structures, volume 13, issue 4, 2013, Pages 57~66
DOI : 10.9712/KASS.2013.13.4.057
Spatial structures have the different dynamic characteristics from general rahmen structures. Therefore, it is necessary to accurately analyze dynamic characteristics and seismic response for seismic design of spatial structure. Keel arch structure is used as an example structure because it has primary characteristics of spatial structures. In case of spatial structures with different ground condition and time lag, multiple support excitation may be subjected to supports of a keel arch structure. In this study, the response of the keel arch structure under multiple support excitation and with time lag are analyzed by means of the pseudo excitation method. Pseudo excitation method shows that the structural response is divided into two parts, ground displacement and structural dynamic response due to ground motion excitation. It is known that the seismic responses of spatial structure under multiple support excitation are different from those of spatial structure under simple excitation. And the seismic response of spatial structure with time lag are different from those of spatial structure without time lag. Therefore, it has to be necessary to analyze the seismic response of spatial structure under multiple support excitation and time lag because the spatial structure supports may be different and very long span. It is shown that the seismic response of spatial structure under multiple support seismic excitation are different from those of spatial structure under unique excitation.
Aging Coefficient Formula of Reinforced Concrete Members under Axial Compression
Yoo, Jae-Wook ; Yu, Eun-Jong ;
Journal of the Korean Association for Spatial Structures, volume 13, issue 4, 2013, Pages 67~74
DOI : 10.9712/KASS.2013.13.4.067
The Age-adjusted effective Modulus Method(AEMM) is one of the methods adopted for the construction stage analysis of concrete structures. The AEMM uses the aging factor to consider the effects of the varying concrete stress. In the aspects of computation time and the accuracy of the results, the AEMM is considered as one of most appropriate methods for construction stage analysis of tall building structures. Previous researches proposed appropriate values of the aging factor in the forms of graphs or using very simple equations. In this paper, an equation for estimating the aging factor as a function of rebar ratio in the section, compressive strength of concrete, notional member dimension, and age of concrete at the load application. The validity of aging factor proposed in this paper were examined by the comparison with the results of step-by step method.
A Buckling Characteristics of Single-Layer Lattice Domes according to Section Shapes of Main Frames (The Existing Domestically-Produced Structural Steel is used as Main Frames)
Jung, Hwan-Mok ;
Journal of the Korean Association for Spatial Structures, volume 13, issue 4, 2013, Pages 75~81
DOI : 10.9712/KASS.2013.13.4.075
The circular hollow section is usually used for member of main frame to carry the external load in single layer lattice dome. But, the H-shaped section may be used for member of main frame since it is convenient for attaching roof panels. Single layer lattice domes have various buckling characteristics, such as the overall buckling, the member buckling, and nodal buckling. The purpose of this study is to compare buckling characteristics of single-layer lattice domes in which the H-shaped steel section as the existing domestically-produced structural steel is used as main frames to those of domes in which a circular hollow section is used as main frames.
An Experimental Study on Monitoring Damages of Membrane Materials Using Lead Switch Sensors and Radio Frequency
Kim, Dong-Hyun ; Kim, Tae-Gon ; Suk, Chang-Mok ;
Journal of the Korean Association for Spatial Structures, volume 13, issue 4, 2013, Pages 83~90
DOI : 10.9712/KASS.2013.13.4.083
PTEF membranes are used for roofing materials of membrane structures. PTEF is the abbreviation of Poly-tetra Fluotide-ethylene. These materials are consisted of fiberglass weave and polyetrfluoroethylene coating. Also, PTEF membranes have some problems of structural capacity by wind or snow load, etc. In this study, sensor housings using lead switches are bonding in PTFE membranes, Monitoring to changes tension and tear damages are studied using radio frequency. If tension is received on edged membranes, bonded lead switches of sensor housings will be destroyed by changes tension, and these become to send signals of damages at the connected radio frequency system with increased tension. Study of these functional membrane materials will be contributed to prevent water leakage and long-term maintenance of membrane structures.