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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Society of Steel Construction
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Journal DOI :
Korean Society of Steel Construction
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Volume & Issues
Volume 13, Issue 5 - 00 2001
Volume 13, Issue 4 - 00 2001
Volume 13, Issue 3 - 00 2001
Volume 13, Issue 2 - 00 2001
Volume 13, Issue 1 - 00 2001
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Appoximate Analysis of Rigid Frames under Vertical and Lateral Loads
Choi, Chul Wung ; Kim, Young Chan ; Kang, Kyung Soo ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 115~122
Even in today's computer-oriented world with all its sophisticated analysis tools, engineering judgement is required to assess the adequacy of computer output. Approximate analysis method can be a feasible tool to check solutions from computer softwares roughly. It can be a simple tool for structural engineer to check force distribution in frame. Also, it can serve as a basis in selecting preliminary member sizes. The objective of this study is length factor and inflection points. The validity of this method is examined by comparing the results of this method with those of existing methods, showing improvement in the prediction of structural behavior
The Bucking Strength and the Application of design of Design Formula of High Strength H-Shaped Section Steel Members
Kim, Jin Kyong ; Kim, Hee Dong ; Lee, Myung Jae ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 123~131
The objective of this study is to investigate the criteria of the width-to-thickness ratio and to evaluate the buckling strength of high strength steel beam-columns and to compare their buckling strength with design codes, which are the Limit State Design code and the Allowable Stress Desogn code(drift). SM520TMC and SM570Q class steels are used for high strength steels. The coupon test and the stub column test were carried out to investigate the properties of high strength steels and the stress-strain curves of stub columns. The buckling strength of high strength steel beam-columns are assessed by numerical analysis used axial force, moment and curvature relationships.
The elastic bucking strength of axially compressed tubular member with through-gusset connection
Kim, Woo-Bum ; Lim, Ji-Youn ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 133~141
A tubular member holding an axially through-gusset connection is often used to transmit axial compression in a steel truss structures. The elastic buckling loads of the member is affected by the stiffness ratio(
) and the length ratio(G) because of two elements with different properties. In current code, however, the strength is evaluated with an effective length factor k=0.9 without considering the above effect. Therefore this study analyzed a theoretical mechanism based on the elasticity theory and performed a finite element analysis to investigate the influence parameters on the elastic buckling strength of axially loaded member.
Strength and Deformation Behavior of Steel Plates under Cyclic Loadinga
Hwang, Won-Sup ; Yoon, Hyung-Suk ; Jeon, Seung-Kwon ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 143~152
This paper presents are monotonic and cyclic behavior of steel plates. The effects of design parameters, initial deflection and aspect ratio, width-thickness ratio are studied by using FEM analysis. The results obtained from the monotonic loadings show that the aspect ratio(a/b) on the strength is to be neglected in the range of
. The major cause of the reduction in strength sbbjected to cyclic loadings are width-thickness ratio and displacement amplitude. Based on the results, this paper presents some new strength curve with considering the cyclic deteriorations. The results are also discussed about the deformation capacity accordance with the width-thickness ratio and displacement amplitude.
Direcy Design of Space Steel Frames Using practical Advanced Analysis
Kim, Seung Eock ; Choi, Se Hyu ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 153~162
A direct design method of three-dimensional frames using practical advanced analysis is presented. In this method. separate member capacity checks encompassed by the code specifications are not required. because the stability of separate members and the structure as a whole can be rigorously treated in determining the maximum strength of the structures. Advanced analysis accounts for geometric and material nonlinearities. The geometric nonlinearlity is considered by the use of stability function. The material nonlinearity is accounted for using CRC tangent modulus and parabolic function. The load-displacements predicted by the proposed analysis compare well with those given by other approaches. A design example has been presented for a 22-story frame. The analysis results show that the proposed method is suitable for adoption in practice.
A Study on the Static Analysis of the Cintinuous Curved Box Girder Bridge using Energy Method
Chang, Byung Soon ; Seo, Sang Keun ; Lee, Dong Jun ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 163~176
In this paper, the stress resultants and displacements of simply supported curved girder based on the flexural torsional theory considering torsional warping effects are analyzed. And elastic equations of continuous curved girder are obtained by using energy method. Also, bending moment warping torsional moment diagram, pure torsional moment diagram, shearing force diagram, and deflection diagram of continuos curved girder bridge subjecting to vertical loads and uniform loads are presented.
A study on the Strength Interaction Equation of H Beams with Web Openings
Park, Jong Won ; Jung, Jae Gil ; Sin, Young Su ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 177~189
It is a common practice to cut openings in the beam webs for the passage of service ducts or pipes in steel building structures. The objective of this paper is to propose a strength interaction equation of H beams with web holes based on the plastic collapse mechanism. In the development of the equation, the basic assumptions used in the previous strength equations and their limitations were investigated. Based on the investigation, a new equation which is simple and easy to understand was proposed. The reliability of the proposed method was evaluated using the test results of previous research made so far. Comparison of the ultimate strength by the proposed equation with previous test results showed that the proposed equation gives more reasonable prediction than the previous strength equations which are commonly used in practice.
Buckling Strength of Cylindrical Shell Subjected to Axial Loads
Kim, Seung Eock ; Choi, Dong Ho ; Lee, Dong Won ; Kim, Chang Sung ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 191~200
This paper presents buckling analysis of the cylindrical shell subjected to axial loads using numerical method. The modeling method, appropriate element type, and number of element are recommended by comparing with analytical solution. Based on the parametric study, buckling stress decreases significantly as the diameter-thickness ratio increases. These results are different from those obtained from buckling analysis of columns. The number of buckling half-wave in circumferential direction decreases as the diameter-height ratio increases. Buckling stress increases 1~2% as the thickness of base plate increases. Therefore the effect of base plate on buckling strength for cylindrical shell can be disregarded. Buckling stress significantly decreases as the amplitude of initial geometric imperfection used for calculating buckling stress is developed and it shows a good agreement with numerical results.
A Study of Dynamis Force Estimation and Strength Design of KALES
Kim, Nak-In ; Yang, Sung-Chul ; Park, Yong-Geol ;
Journal of Korean Society of Steel Construction, volume 13, issue 2, 2001, Pages 211~221
The dynamic force estimation and strength design of KALES(Korea Accelerated Loading and Environmental Simulator) are studied. The KALES is continuously rotating the test track and subjected to the dynamic or impact forces during operation since the track is composed of straight and curved line. To estimate the dynamic equation for the model car which was already made is derived with analytical and experimental techniques. Using similarity relationships between the model car and KALES, the dynamic force and stability properties for KALES can be predicted. The stress analysis and fatigue life estimation of KALES is also estimated with the calculated dynamic load. From the stress analysis and fatigue life estimation results, it was found that the design of KALES is safe.