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 14, Issue 5 - Oct 2002
Volume 1, Issue 4 - 00 2002
Volume 14, Issue 6 - 00 2002
Volume 14, Issue 4 - 00 2002
Volume 14, Issue 3 - 00 2002
Volume 14, Issue 2 - 00 2002
Volume 14, Issue 1 - 00 2002
Volume 13, Issue 6 - 00 2002
Selecting the target year
Multi-Objective Optimization for Orthotrpic Steel Deck Bridges
Cho, Hyo Nam ; Chung, Jee Seung ; Min, Dae Hong ;
Journal of Korean Society of Steel Construction, volume 14, issue 3, 2002, Pages 395~402
This study proposed a muti-objective optimum design method for rational optimizing of orthotropic steel deck bridges. This multi-objective optimum design method was found to be effective in optimizing multi-objective problems, considering cost and deflection functions. It may ve difficult to optimize orthotropic steel deck bridges using a conventional optimization, since the bridges have several parts and show complex structural behaviors. Therefore, the Pareto curve can be obtained by performing the multi-objective optimization for real orthotropic steel deck bridges, using the multi-level technique with excellent efficiency. A reasonable and economical design can be attained using the Parato curve in the cost and deflection functions of the bridge. Thus, more reasonable design values can be determined based on a comparison with those using a conventional design procedure.
Ultimate Strength of Fillet-welded T-joints in Cold-formed Square Hollow Sections-chord web failure mode
Bae, Kyu Woong ; Park, Keum Sung ; Kang, Chang Hoon ; Moon, Tae Sup ;
Journal of Korean Society of Steel Construction, volume 14, issue 3, 2002, Pages 403~411
This paper described the ultimate strength and deformation limit of welded T-joints in cold-formed square hollow sections. Previous studies showed that the T-joint has an obvious peak load. with the failure mode of chord-web buckling at a ratio of branch width to chord width (
) of above 0.8. Similar to a T-joint with chord-flange failure mode, the strength at a certain deformation limit can be regarded as the ultimate strength of a T-joint Based on the experimental results including tests done by Kato and Zhao, the deformation limit was proposed as 3%B for
. The strength formula of CIDECT and those of other researchers were also compared with the test results. Finally, the strength formula based on the column buckling was proposed.
An Experimental Study on the Behavior of Hybrid Beam Composed of End Reinforced Concrete-Center Steel
Kang, Byung Su ; Kim, Seong Eun ; Choi, Hyun Sik ;
Journal of Korean Society of Steel Construction, volume 14, issue 3, 2002, Pages 413~421
This study sought to understand the mechanical behavior according to the shape of the connecting part of the hybrid beam. This part is composed of central steel. with the end reinforced by concrete in the experiment of cyclic loading. The experimental result was compared and verified with the ultimate strength formula. Likewise, the composite effect and the effectiveness of seismic capacity and stress transmission were examined. The types of each setup were as follows: main bars by welding type, reinforcing by end-plate type, reinforcing by shear connector type, and shear connector type. Results showed that the reinforcing by end-plate type and the shear connector type had excellent strength and seismic capacity as well as better stress transmission. This was due to the unity between reinforced concrete and the steel's connecting part. However, the experimental result was somehow different from the previously established ultimate strength formula. Thus, a definite ultimate strength formula is required.
Analytical and Numerical Study on Saptially Coupled Free Vibration of Nonsymmetric Thin-Walled Curved Girders
Kim, Nam Il ; Kim, Moon Young ;
Journal of Korean Society of Steel Construction, volume 14, issue 3, 2002, Pages 423~432
This study presented analytical and numerical solutions for spatial free vibration of nonsymmetric thin-walled circular curved beams. The closed-form solutions were obtained for in-plane free vibration analylsis of monosymmetric curved beams. Likewise, two types of thin-walled curved beam elements were developed using the third and the fifth order Hermitian polynomials. In order to illustrate the accuracy and usefulness of the present method, this study presented analytical and numerical solution and compared these with the results using the ABAQUS's shell elements. In particular, effects of the thickness-curvature as well as the inextensional condition were investigated on the free vibration of curved beams with nonsymmetric sections.
Stress Distribution Behavior Hollow and Felled Circular Column Column-Box Beam Connections
Hwang, Won Sup ; Park, Yong Myung ; Choi, Won Kyong ; Kim, Young Pil ;
Journal of Korean Society of Steel Construction, volume 14, issue 3, 2002, Pages 433~441
This study present the stressdistribution of circular column-box beam connection in steel piers. Experiments were carried out for hollow and concrete filled connections, depending on the joint angle. To determine vertical and shear stress distribution, this study examined the equivalent web depth dc' that is mainly used in existing design equation. Lidewise, as additional equivalent web depth was introduced. Stress values that were calculated using equivalent wev depth were also compared with the test stress value. Results showed that stresses of hollow and filled connections have great differences. However, dc' has a limitation for some joint angles. Likewise, stress of filled connection was less than that of the hollow connection. The test value of filled connection was also compared with design equations that were introduced from the hollow connection.
Time Dependent Maintenance Models of Bridges
Yang, Seung Ie ;
Journal of Korean Society of Steel Construction, volume 14, issue 3, 2002, Pages 443~452
Construction of highway bridges is almost complete in many countries. Thus, the government and highway agencies are shifting their remaining life span from the viewpoint of system reliability. As such, it is necessary to develop maintenance models based on system reliability concept. In this paper, preventive and essential maintenance models were developed using system reliability and lifetime distribution.
Fatigue Strength for the Non Load Carrying cruciform Welded Joints of High Strength Steel
Kim, Sung Hoon ; Bae, Doo Byong ; Choi, Jun Hyeok ;
Journal of Korean Society of Steel Construction, volume 14, issue 3, 2002, Pages 453~461
This study investigated the fatigue stength of non-load carrying cruciform welded joints, which was maunfactured using the SM570 and POSTEN80 high strengh steel. Factors such as fatigue strength, fatigue crack initiation and propagation, thickness effect, and the relatioinship between the static strength and the fatigue strength were examined and compared with previous fatigue testing results. Results showed that the fatigue strength of SM570 and POSTEN80 steel are higher than the grade represented on the design specification. It is also identified the size effect and the dependence of the static stength in a few cases.
Experimental Evalution of Structural Behavior on SRC type TEC-BEAM to RC Column Connection
Ju, Young Kyu ; Kim, Do Hyun ; Chung, Kwang Ryang ; Kim, Sang Dae ;
Journal of Korean Society of Steel Construction, volume 14, issue 3, 2002, Pages 463~470
The TEC-Beam system is a composite beam consisting of structural tee, precast concrete, and cast-in-site reinforced concrete slab. The preliminary test of the proposed system was performed for simple beams, showing good behavior. However, for the field application of the system. TEC-Beam - RC column connection was required to produce a mechanism that transfers the force occurring in the lower part of the TEC-Beam. Thus, this study developed a connection mechanism that transfers the force occurring in the lower part of the TEC-Beam. Thus, this study developed a connection wherein the section of the TEC-Beam was enlarged and the lower part reinforced. Two setups of the proposed system were experimentally investigated. using the anchorage length of reinforcement., i.e., length of the increased section, as test parameter. It could be concluded from the result that the proposed system shows good structural behavior, with potential applicability in the field.