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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Association for Spatial Structures
Journal Basic Information
Journal DOI :
Korean Association for Spatial Structures
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Volume & Issues
Volume 9, Issue 4 - Dec 2009
Volume 9, Issue 3 - Sep 2009
Volume 9, Issue 2 - Jun 2009
Volume 9, Issue 1 - Mar 2009
Selecting the target year
On-line Tests on Collapse Mode Controlled Steel Frame
Lee, Seung-Jae ; Oh, Sang-Hoon ;
Journal of the Korean Association for Spatial Structures, volume 9, issue 1, 2009, Pages 47~52
In this study, it is demonstrated by a pseudo dynamic earthquake response tests that combination of semi-rigid partial-strength using the high performance-high strength bolts and inter-story hysteretic damper system creates a fairly good structural system that satisfies not only the serviceability requirement under moderate earthquakes but unexpected failure of damper system.
A Study on Structural Plannings and Details
Park, Sun-Woo ; Choi, Chui-Kyung ;
Journal of the Korean Association for Spatial Structures, volume 9, issue 1, 2009, Pages 53~60
The purpose of this study is to explore the methodology of structural planning and detail, maintaining a close connection between architect and structural engineer. Actually it is difficult to solve a detail in a special structure, without investigation of structural behavior. In such a detail, it is hard to estimate the accurate flow of force, no more than a formative presentation. I will purpose to solve the processing of desirable detail, as a point of engineer's view, under the cooperative relationship between architect and structural engineer.
Study on the Performance of Waffle slab by Variation on the Section Properties of the Constituent Structural Elements
Choong, K.K. ; Kim, Jae-Yeol ; Kim, Kwang-Il ; Kang, Joo-Won ;
Journal of the Korean Association for Spatial Structures, volume 9, issue 1, 2009, Pages 61~68
This paper is concerned with the investigation of the structural behavior of waffle structure. Parametric variation on waffle floor thickness, main beam depth and column sizes are imposed to study the effects on mode shapes and natural frequencies of waffle structures. Comparisons between FEM models using shell and 3D-solid elements have also been made. The analysis result has shown that the mode frequencies increase with i) increase in main beam depth at level 2 and ii) decrease in waffle slab thickness at level 3. Both 3D and 2D model shown similar mode shapes. Besides, there is a consistent difference in mode frequencies between 3D and 2D model ranging from 25% to 36%.
Evaluation of Seismic Responses for Building in Moderate Seismicity Regions Considered Vertical Earthquake Ground Motions
Han, Duck-Jeon ; Ko, Hyun ;
Journal of the Korean Association for Spatial Structures, volume 9, issue 1, 2009, Pages 69~78
Recent earthquake, such as the Northridge(1994), the Kobe(1995) and the Izmit(1990) earthquakes, gave serious damage in various buildings and bridges by the vertical seismic component. Most of the seismic designs neglect the vertical seismic component for usual frame structures. The purpose of this study is to evaluate the effects of the vertical seismic component and to compare the axial force of columns and plastic rotation angle of the analytical models in these effects. The vertical seismic component produced a large increment of axial force in columns. And the vertical seismic component caused a significant increase of the damage in the columns. As analysis result, increase of axial force cause the damage of columns and give possibility of story collapse mechanism of the structure system. Therefore, area that near fault ground motion is expected may be consider the effect of vertical component of seismic ground motions.
Comparison of Natural Frequency of Domestic and Foreign Long-spaned Structure
Yoon, Sung-Won ; Park, Yong ;
Journal of the Korean Association for Spatial Structures, volume 9, issue 1, 2009, Pages 79~85
As a recent spatial structure have become long-spaned and light, stiffness of out-plane is reduced significantly. Due to this, it is necessary to calculate natural frequency correctly to check if structure is flexible or vortex-induced vibration is occurred. However, formula of frequency in domestic and foreign spatial structure has not been performed deeply. In this study, approximated formula obtained by eigenvalue analysis of seven domestic spatial structure is compared with two suggestions based on Japanese standard and formula by measurement of 28 spatial structure in Japan. Natural frequency of roof has a tendency to be reduced as the span of structure increases. Natural frequency of domestic structure is generally less than that of analysis and measurement of spatial structure in Japan. Therefore, it is confirm that roof of domestic spatial structure is relatively rather flexible than that of Japan.
Research on Dynamic Behavior of Double-Layer Barrelvault Arch Systems Subjected to Earthquake Loadings
Shin, Ji-Wook ; Lee, Ki-Hak ; Jung, Chan-Woo ; Kang, Joo-Won ;
Journal of the Korean Association for Spatial Structures, volume 9, issue 1, 2009, Pages 87~94
This paper presents dynamic behavior of double-layer barrelvault systems subjected to earthquake loadings. In order to investigate different seismic behaviors according to Time History Analysis (THA), six open angles were employed and different fundamental frequencies corresponding to each open angle were considered. A total of 24 double-layer structures were developed by using Midas Gen., which is a computer analysis program and then THA with three different earthquakes with 5% damping ratio was performed. This study investigated the characteristics of the dynamic response for X-, Y- and Z- directions, both subjected to the horizontal earthquake (H) and applied to the vertical earthquake (V) with respect to the each variable, which assumed to be important aspects for spatial structure. In order to examine the dynamic characteristics, the ratio of acceleration in specific nodes of barrelvaults was evaluated at the time with maximum response. The main purpose of this study is to obtain equations of the equivalent earthquake loading with respect to the barrelvault systems.