Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Korean Society of Steel Construction
Journal Basic Information
Journal DOI :
Korean Society of Steel Construction
Editor in Chief :
Volume & Issues
Volume 12, Issue 5 - Oct 2000
Volume 12, Issue 4 - Aug 2000
Volume 12, Issue 3 - Jun 2000
Volume 12, Issue 2 - Apr 2000
Volume 12, Issue 1 - Feb 2000
Volume 12, Issue 6 - 00 2000
Selecting the target year
An Analytical Study on Semi-Rigid Connections of 20-Story Braced Steel Structures
Kang, Suk-Bong ; Kim, Jin-Hyoung ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 1~8
In this study, the effect of semi-rigid connections on the structural behavior of 20-story braced steel structure has been investigated utilizing the second-order elastic structural analysis program in which nonlinear behavior of beam-column connections and geometric nonlinearity have been considered. Global effects such as P-delta effect and sway at the top have been studied, as well as distribution of member force and combined stress in structural members as local effects. When the structure subjected to horizontal load and vertical load is equipped with lateral-load resisting system such as braces, replacement of shear connection with semi-rigid connection has not caused any problem in P-delta effect and top lateral displacement. Distribution of member forces resulted in reduction in member size for economic structural design.
Modelling of Load-Strain Curves for CFT Stub Columns
Kang, Hyun Sik ; Yoo, Yeong Chan ; Moon, Tae Sup ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 9~16
The model of load-strain relations for CFT stub columns subjected to centrally compressive axial load is shown in this paper. The modified model of concrete and steel is obtained by using the experimental data and the formulas of that is based on the foreign researcher's result. The purpose of this paper is to suggest the basic data for evaluating the behavior of CFT stub columns to be variable to the strength of concrete and steel.
Analytical Method for Bending Moment of Slab-on-Steel-Girder Bridge
Park, Nam Hoi ; Choi, Jin Yu ; Yu, Chul Soo ; Kang, Young Jong ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 17~28
The current specifications for bridge decks requires the same amount of upper and lower reinforcement mats. There have been many empirical activities that the partial elimination of upper reinforcing bars was not caused the structural integrity of a deck. A simplified method is derived based on thin plate theory for three and four-girder-span bridge decks. A simplified method for bridge deck considering the effect of girder deflection is proposed based on a closed-form solution that shows good agreement with the results of finite element models. In this research, a new design approach for deck slabs is proposed based on the simplified method. The negative bending moments in a deck can be evaluated with the simplified method based on the position of a wheel load, the aspect ratio and relative stiffness and the span length. This new approach can lead to a significant reduction of the quantity of the top reinforcing steel bars in a deck. Reducing the quantify of the top reinforcement not only reduces the construction costs for bridge decks, but also reduces the corrosion of reinforcement to a minimum.
Buckling Analysis of Inelastic Steel Members
Gil, Heung-Bae ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 29~43
In this study, the computationally efficient inelastic buckling analysis program is developed to be used as the research tool in finding buckling strength of inelastic members. The program can determine buckling loads and buckled shapes of elastic and inelastic members which failed by flexural, lateral-torsional and/or local buckling. It can analyze singly and doubly symmetric I-shape members. In the program, the web of the member is modeled using the plate element and the flanges are modeled by beam elements. Multilinear isotropic hardening rule and the incremental theory of plasticity are used to simulate the inelastic stress-strain relationship from material tests. The program is verified using theoretical solutions and experimental results. The results from the program show good agreement with those from experiments and theory.
Comparative assessment for Design Oriented Structural Reanalysis Models
Hwang, Jin Ha ; Lee, Jae Seok ; Kim, Kyeong Il ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 45~54
Design-oriented approximate structural reanalysis models are compared and assessed, particularly with focus on the case of large changes of design variables. The effectiveness and reliability are demonstrated by means of numerical examples. The results of the study suggest the following conclusions relative to the potential of the procedures. (A) local approximation is only appropriate for the case of small changes in design : (B) global approximation is exact for the case of large changes in a small number of design variables, but inefficient : (C) local-global approximation is most effective and reliable for the case of large changes with a large number of design variables. These methods can improve the total efficiency when they are appropriately used to the design information for the redesign process of large scale structures.
Behavior of Concrete-Filled Tube Column to H-Beam Connections with External Stiffeners and Reinforcing Bar
Kang, Chang-Hoon ; Shin, Kyung-Jae ; Oh, Young-Suk ; Moon, Tae-Sup ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 55~63
This paper is a study on the behavior of Concrete-Filled Square Tubular(CFST) column to H-beam connections reinforced with external stiffeners and reinforcing bar. The cyclic loading tests of 5 test specimens were carried out. The main Parameters are as follows; 1)the length of the stiffener: 200mm, 250mm, 2)the diameter of reinforcing bar: HD16, 19. The results of the researches demonstrate that the increase of the stiffener length was more effective than the increase of the area of reinforcing bar in the point of both strength and stiffness. By reinforcing external stiffeners, stable hysteretic behavior was shown and plastic hinge was formed on the beam flange. Cold-formed tube sections should be used carefully to avoid the welding fracture at the round corners of section, and the proposed welding methods are suitable for this connections.
An Analytical Study on the Nonlinear Behavior of Double Angle Connections Subjected to Shear
Lee, Soo-Kueon ; Hong, Kap-Pyo ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 65~73
The behavior of double angle connections is analyzed by 3D finite element method using ABAQUS(ver 5.8). Moment-rotation curves for the connections are generated, as well as stress distribution for angle and bolt. Double angle connections have various angle thickness, gage distance and number of bolt. Parameters, such as initial stiffness, plastic tiffness, reference load and curve shape parameter were obtained by regression method using Richard's formula. These parameter lead to predict nonlinear behavior of double angle connection. Design curves giving the parameters of the moment-rotation curves are generated. These parameters are primarily a function of the angle thickness, gage distance and the number of bolts in the connection. Using these parameters, connection moment and its ratio to the full plastic moment capacity Mp of the beam are calculated.
A Study on Simplified Model of Double Angle Connections Subjected to Axial Loads
Hong, Kap-Pyo ; Yang, Jae-Guen ; Lee, Soo-Kueon ; Song, Byung-Ju ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 75~82
Recently, many studies on connections in steel structures have been performed. In practice, designers assume that the connection is a rigid- or pinned-one, however, actually the connection behaves as partially restrained one, neither fully restrained nor unrestrained. This paper concentrates on the behavior of double angle connections in the field of semi-rigid connections. The behavior of double angle connection. induced by abrupt axial tension load or by collapsed brace in medium or low rise building, is analyzed by 3D nonlinear finite element method using ABAQUS(ver 5.8). From the analytic results. a simplified model of double angle and a rotational stiffness at the corner of the angle are derived, which are fundamentally used for understanding the behavior of the double angle connection.
Time Domain Modal Identification Method by using Measured Signals and its Sensitivity to Measurement Noise
Choi, Hyung Jin ; Lee, Hak Eun ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 83~91
The first Procedure to identify structural system by using measured data is transformation of data to frequency domain and try to recognize modal characteristics in graphical condition. Those methods are doubted about the reliability to the civil structures, especially bridges which has coupled and close modal characteristics. In this paper, feasibility of time domain modal Identification methods were examined and applied double least square method to overcome bias characteristics of the identification methods. To show the advantage of proposed method, simulation were carried out for mass-spring model. And to examine the usage of the method in realistic case, sensitivity of the methods to noise was performed.
A Hierarchical Approach for Design Analysis and Optimization of Framed Structures
Hwang, Jin Ha ; Lee, Hak Sool ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 93~102
Substructuring-based hierarchical approach for design analysis and optimization of structural frames is presented in this study. The conceptual framework of this method is in the hierarchical modeling for design processes as well as structural systems and the methodology combining substructuring analysis and multilevel optimization. Mathematical models for analysis and synthesis are established on the common basis of substructuring systems. Modularized behavioral analysis, design sensitivity analysis and optimization are linked and integrated on the mathematical and structural basis of substructuring. Substructures are coordinated with the active constraints for system level and the weight ratio criteria. Numerical examples for test frames show the validity and effectiveness of the present approach.
Comparison of Dynamic Responses According to Anchorage Type of Suspesion Bridges
Suh, Jeong In ; Kim, Ho Kyung ;
Journal of Korean Society of Steel Construction, volume 12, issue 1, 2000, Pages 103~110
The suspension bridge is divided by an earth anchor and a self-anchor type according to the anchorage type. This study is to evaluate the dynamic effect of moving vehicles to suspension bridges. The results were presented with the dynamic magnification factor (DMF) by the effect of vehicle speed and weight according to the anchorage type. The vehicle model has 6 degrees of freedom to idealize nonlinear multi-leaf suspensions and elastic tires of tractor-trailer. The bridge was modelled with the 3-dimensional frame element and 3-dimensional elastic catenary cable element. The condition of deck surface is considered using the actual road spectra.