Go to the main menu
Skip to content
Go to bottom
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
Editor in Chief :
Volume & Issues
Volume 10, Issue 4 - Dec 2010
Volume 10, Issue 3 - Sep 2010
Volume 10, Issue 2 - Jun 2010
Volume 10, Issue 1 - Mar 2010
Selecting the target year
A Study on the Shape Analysis of Membrane Structures Using Line Elements
Kim, Seung-Deog ; Lee, Shin-Woo ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 45~60
Nonlinear problems for membrane structures are very sensitive in convergence procedure in nonlinear iterations. Therefore many researchers have suggested a lot of ideas in published papers. In this study, authors are trying to get easier solution for taking membrane shape by initial stresses from substitution of the membrane to line elements. To obtain nonlinear stiffness, the nonlinear finite element method is used for both membrane and cable elements, and only geometric nonlinear terms are taken for shape analysis. By some examined models, we can find that the substituted models show better results to get, initial shape in which the concentrating phenomenon is removed at edge parts.
The Cause Analysis of Greenhouse Damage for Heavy Snow using Large Displacement Analysis
Park, Soon-Eung ; Lee, Jong-Won ; Lee, Suk-Gun ; Lee, Hyun-Woo ; Choi, Jae-Hyouk ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 61~68
The collapsing accidents of pipe greenhouses in the farmhouse have been increased duo to heavy snow load. However, the study on exact structure analysis to prevent the collapse of pipe greenhouses is rare and the damage of the farmhouse is annually repeated. The method of existing structure analysis is basically made of linear elastic analysis based on the micro displacement. But the actual stiffness of the pipe greenhouse is significantly weaker than the stiffness of buildings and the load acting on the greenhouses gets to become relatively bigger. It means that the geometry shape of greenhouses changes so that the relation of strain-displacement gets to indicate a nonlinear behavior. Therefore, this study is performed to evaluate the structural safety so as to prevent the collapse of pipe greenhouses, which are the single-span greenhouse(farmhouse guidance shape, G) and multi-span greenhouse(farmhouse supply shape, 1-2W), by performing the large-displacement analysis considering nonlinear effects.
Evaluation of Structural Response of Base Isolated Frame Considering Uplift Effect of Isolators
Kim, Dae-Kon ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 69~76
After obtaining tensile and compressive stiffness as well as shear stiffness of elastomeric seismic isolator experimentally, those stiffness were modeled analytically using nonlinear computer program. To induce tensile stress due to overturning in the seismic isolators of an isolated frame for horizontal force, free vibration simulations generated by large initial displacement were conducted. Since elastomeric seismic isolator is weak for tensile stress, the axial stiffness of isolators shall be included properly in the analytical model to evaluate the uplift phenomenon of elastomeric seismic isolator.
Automatic FE Mesh Generation Technique using Computer Aided Geometric Design for Free-form Discrete Spatial Structure
Lee, Sang-Jin ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 77~86
This paper provides background theories and numerical results of automatic finite element (FE) mesh generation for freeform discrete structures. The present method adopts the computer aided geometric design (CAGD) technique to overcome the limitation of case-sensitive traditional automatic FE mesh generator. The present technique involves two steps. The first one is to represent the shape of the structure using the geometric model based on the CAGD and the second one is to generate the discrete FE mesh of spatial structures over the geometric model. From numerical results, it is found to be that the present technique is very easy to produce the FE mesh for free-form spatial structures and it can also reuse some features of traditional automatic mesh generator in the process. Furthermore, it shows the possibility to be used for the shape optimization of large spatial structures.
Form-Finding of Tensegrity Structures based on Eigenvalue Formulation
Jung, Mi-Roo ; Lee, Jae-Hong ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 87~94
Form-Finding of tensegrity structures by eigenvalue problem is presented, In ardor to maintain the structures stable, "Form-Finding" should be performed. The types of analytical methods are known to solve this phenomenon: One is to use force density method, and the other is to apply so called, generalized inverse method. In this paper, new form finding methods are presented to obtain the self-equilibrium stress of the tensegrity structures. This method is based on the equilibrium equation of the all of the joint and the governing equation is formulated as eigonvalue problem. In order to verify this approach, numerical example(tensegrity structures) are compared with others calculated by previous methods. The solution by present method is shown identical results. Furthermore, the developed process to find the results is more efficient than previous approaches.
A study on the Accurate Comparison of Nonlinear Solution Which Used Tangent Stiffness Equation and Nonlinear Stiffness Equation
Kim, Seung-Deog ; Kim, Nam-Seok ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 95~103
This paper study on the accuracy improvement of nonlinear stiffness equation. The large structure must have thin thickness for build the large space structure there fore structure instability review is important when we do structural design. The structure instability of the shelled structure is accept it sensitively by varied conditions. This come to a nonlinear problem with be concomitant large deformation. Accuracy of nonlinear stiffness equation must improve to examine structure instability. In this study, space truss is analysis model Among tangent stiffness equation and nonlinear stiffness equation is using nonlinearity analysis program. The study compares an analysis result to investigate accuracy and convergence properties improvement of nonlinear stiffness equation.
An Structural Design for Cyclone Tower's Connections Using Diagrid System
Lee, Se-Jung ; Lee, Seong-Hui ; Kim, Jin-Ho ; Choi, Sung-Mo ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 105~115
Recently, High-rise building are irregular-shaped to be city landmarks and function as vertical cities to enable the efficient use of land. 3T (Twisted, Tilted & Tapered) designs are being suggested for irregular buildings and studies to develop new structural system have been actively made to satisfy slender shape ratio. In diagrid system, not only gravity load but also lateral load is delivered based on the triangular shape of diagrid, so most of columns are eliminated. Because shearing force is delivered by the axial behavior (tensile/compressive) of diagrid to minimize shearing deformation, the system is more applicable to irregular buildings than existing system where shearing force is delivered by the columns. In this study, the process of selecting connection details and the structural safety of the selected details are verified using the finite element analysis with focus given to the construction overview of the Cyclone Tower. However, the relersed methods of stress concentration are suggested and the performance of stress concentration relieves that it's suggested for the appropriate cap plate thickness and extended length.
Experiment on Flexural Analysis of RC Beams Strengthened with Composite Material Panel
Kim, Jin-Man ; Jung, Mi-Roo ; Lee, Jae-Hong ; Yoon, Kwang-Sup ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 117~126
Experiment on flexural analysis of RC beams strengthened with composite material panel is presented. Recently, the strengthening of reinforced concrete structures using advanced fiber reinforced plastic (FRP) composites, and in particular the behavior of FRP-reinforced concrete structure is topic that has become very popular because of good corrosion resistance and easy for site handling due to their light weight. In this study, an efficient computational analysis using ABAQUS to predict the ultimate moment capacity of reinforced concrete beams strengthened with FRP is presented. Test parameters in this study are the shape of fiber arrangement (LT, DB, DBT) and the number of carbon fiber sheets (2ply, 3ply). When comparing with results of the analytical model, results of the experiments show similar values. Furthermore, reinforced concrete beam with FRP obtains improved effects for ultimate strength.
Basic Test on the Mechanical Characteristics of Polyester Membrane
Park, Kang-Geun ; Yoon, Seoung-Hyun ; Lee, Jang-Bok ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 127~134
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/
, and strain is 17.90~26.91%.
A Study on the Application of Fire Protection Facilities in Large Enclosure Gymnasium
Choi, Dong-Ho ; Kim, Choon-Dong ; Yang, Jeong-Hoon ; Cho, Young-Hum ;
Journal of the Korean Association for Spatial Structures, volume 10, issue 2, 2010, Pages 135~145
The objective of this study is to draw basic data for the application of the fire protection planning for the future plan large enclosure buildings in Korea through an analysis of its characteristics by case studies of the domestic and foreign large scale gymnasiums. In this study, domestic building codes for the fire protection are investigated and fire detection systems, fire extinguishing systems, smoke control systems and evacuation systems of three large scale gymnasiums located at Korea and eight foreign countries are compared and analyzed. The results of this study show that infrared light fire detection system and flame detector for spacial characteristics are potentially used in fire protection systems of large scale gymnasiums: dry type sprinkler and sprinkler water gun are adopted in fire detection system; and smoke accumulation system is widely utilized in smoke control system.