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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 6, Issue 4 - Dec 2006
Volume 6, Issue 3 - Sep 2006
Volume 6, Issue 2 - Jun 2006
Volume 6, Issue 1 - Mar 2006
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Shear Failure Modes of Reinforced Concrete Members with High-Strength Materials
Lee, Jung-Yoon ; Kim, Kyung-Won ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 53~60
The shear failure modes of reinforced concrete members using high-strength materials (high-strength concrete and high-strength steel) are different to those of reinforced concrete members using normal-strength materials. The reinforced concrete members using high-strength materials are inclined to fail due to concrete crushing before the shear reinforcing bar reaches its yield strength. This paper presents an evaluation equation to calculate the maximum shear reinforcement ratio based on the material stresses and strains when the reinforced concrete members fail in shear. The maximum shear reinforcement ratio calculated by the proposed equation increases as the compressive strength of concrete increases. Test results of 97 reinforced concrete members reported in the technical literatures are used to check the validity of the proposed equation. The comparison between the test results and the ratio calculated using the proposed equation indicated that the shear failure modes depended on the interaction between the amount of shear reinforcement and the compressive strength of concrete.
A Vibration Response Analysis of Steel Building Frame with K Shape Brace Vibrationally Controlled by Turbulent Flow Dampers sealed by Visco-elastic Material
Lee, Ho ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 61~68
In this thesis, a full-scale K shape damper test model was constructed in which a passive vibration control system. This passive vibration control system was incorporated with the use of a newly developed turbulent flow damper sealed by viscoelastic material. A series of tests and earthquake observation has been conducted in this test model. The purpose of the present thesis is to investigate the vibration response characteristics of the building and to verify the effectiveness of the vibration control system. By the static loading test, it was recognized that incorporation of the dampers had little influence on static horizontal stiffness of the building. Free vibration tests revealed that the dampers incorporated increased the damping ratio of the building up to 3 times compared with the undamped case. The effectiveness of the developed vibration control system was confirmed based on the excitation tests and earthquake response observation.
An Analysis of Stabilizing Process of Cable Dome and Its Application
HwangBo, Seok ; Yoo, Yong-Ju ; Han, Sang-Eul ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 69~76
Cable dome is one of tension structure which is gradually stabilized by tensioning tables from initially unstable state to finally stable state. This stabilizing process is not able to be developed by general analysis because some cables endure compression forces during stabilizing process. Thus, this paper uses dynamic relaxation method to solve this problem. To apply this stabilizing process analysis to the actual project, this paper deals with cable dome roof of Seoul Olympic Gymnasium. Finally, this paper prove the usefulness of stabilizing process analysis by comparing the analysis results and the measurements.
STEP Entities in Integrated Design System for Tall Buildings
Song, Hwa-Cheol ; Cho, Yong-Soo ; Kim, Soo-Hwan ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 77~83
The planning process of complex projects in tall building is characterized by the cooperation of many involved specialists and by a high degree of information exchange. In order to improve the quality of the structural design of tall buildings, information of different involved partners in the planning process has to be integrated. This paper aims to introduce a concept of the integrated structural design for the tall building using STEP(Standard for the Exchange of Product Model Data). In this study, the entities of mass, column shortening, and serviceability evaluation for structural design in tall buildings are proposed.
Design and Analysis on The Connections of RC Precast Large Panel
Park, Kang-Geun ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 85~92
Precast large panel structures have various connection system such as the horizontal slab-to-wall connection, the vertical wall to wall connection, horizontal slab-to-slab connection, etc. Horizontal connection is connected by vertical tie bars, and vertical joint is connected loop bars and shear keys. The basic function is equalized deformations on later forces and the entire wall panel assembly acts as monolithic actions. Under lateral load some slip occurs in almost vertical connections. The shape and detail of precast connections are very important to the monolithic behavior of overall structures. The paper is a study on the design method and new elasto-plastic analysis of the connections by rigid-bodies spring model.
Experimental Study On Seismic Behavior Of Masonry Walls With Column
Kikuchi, Kenji ; Park, Kang-Geun ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 93~105
In order to investigate the effect of the height of application point of lateral loads and reinforcing steel bars in walls and columns in improving the seismic behavior of confined concrete block masonry walls, an experimental research program is conducted. A total of twelve one-half scale specimens are tested under repeated lateral loads. Specimens are tested to failure with increasing maximum lateral drifts while a vertical axial load was applied and maintained constant. The specimens adopted are two-dimensional (2D) hollow concrete block masonry walls with different parameters such as shear span ratio, inflection point and percent of reinforcement in confining columns and walls. Test results obtained for each specimen include cracking patterns, load-deflection curve, and strains in reinforcement and walls in critical locations. Analysis of test data showed that above parameters generate a considerable effect on the seismic performance of confined concrete block masonry walls.
A Study on the Morphogenesis of Polyhedra as Design Sources of Architectural Structures
Choi, Sun-Young ; Park, Sun-Woo ; Park, Chan-Soo ; Choi, Chui-Kyung ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 107~114
The purpose of this study is to explore the morphology of polyhedra as a tool diversifying the approach to structures and shapes, and to consider the way of the morphogenesis as structural design sources. First, through many examples in nature and styles used as the rhetorical representation of buildings, the shapes of which are based on one of polyhedra are shown. Secondly, the morphogenetic characteristics of polyhedra limited to pure lattice structure are investigated. Thereby the methodology of spatial morphogenesis of polyhedra as structural design sources are generated.
A Study on Forced Vibration Tests on a Structure with Stud Type of Vibration Control Damper
Lee, Seung-Jae ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 115~121
In recent years vibration control damper made of low yield point steel is expected to play an important role in controlling structural vibration induced earthquake and wind. But their dynamic characteristics and energy dissipation effects on the whole structure model are not clarified. In this paper, firstly, we presents the results of cyclic tests on low yield steel dampers. Secondly, forced vibration tests on existence three stories steel structure model with low yield point steel dampers are presented. Lastly, it is estimated energy amount which is dissipated through the hysteresis dampers by using two types of analytical models, hysteresis model and equivalent linear model.
An Experimental Study on the Flexural Strengthening Effect of Reinforced Concrete Beams Flexural Strengthened by CFRP
Kim, Jae-Hun ; Park, Sung-Moo ; Kang, Joo-Won ; Shin, Seung-Hyup ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 123~129
Recently, many researches have been conducted about reinforced concrete structures strengthened with FRP plates. In case of structures strengthened with FRP plates, the issue of premature debonding FRP plate has been raised through many previous researches. The purpose of this paper is what structural behavior and flexaural capacity of reinforced concrete beams which are strengthened for flexure is investigated about the using secondary ironware in the method of external bonded CFRP plate, and the method of near surface mounted CFRP-Rod. Also, in order to evaluate flexural capacity, experiments of the reinforced concrete beams with exteranl bonded CFRP plate and near surface mounted CFRP-Rod have been compared and investigated.
Estimation of Plastic Energy Dissipation Amount of Multi-bent Spatial structure by Equivalent Linear Analysis
Lee, Seung-Jae ;
Journal of the Korean Association for Spatial Structures, volume 6, issue 2, 2006, Pages 131~136
It is important to evaluate energy absorption capacity of frames required during a design earthquake. An inelastic computer analysis based on mathematical modelling of energy absorbing frames and elements makes it possible to evaluate required energy absorption capacity. But such an analysis sometimes consumes much computation time particularly in case of complicated structural system. This paper presents a proposal to predict energy absorption of multi-bent steel frames by simple equivalent linear method.