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한국강구조학회> International Journal of Steel Structures

International Journal of Steel Structures

  • : 한국강구조학회
  • : 공학분야  >  토목공학
  • : KCI등재
  • : SCI,SCOPUS
  • : 연속간행물
  • : 계간
  • : 1598-2351
  • : 2093-6311
  • :

수록정보
수록범위 : 1권3호(2001)~10권2호(2010) |수록논문 수 : 290
International Journal of Steel Structures
10권2호(2010년 06월) 수록논문
최근 권호 논문
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KCI등재 SCI SCOPUS

1Life-cycle Cost Analysis of a TPSM Applied Continuous Composite Girder Bridge

저자 : Sang Hyo Kim , Jun Hwan Kim , Chi Young Jung , Jin Hee Ahn

발행기관 : 한국강구조학회 간행물 : International Journal of Steel Structures 10권 2호 발행 연도 : 2010 페이지 : pp. 115-129 (15 pages)

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Transverse cracks in composite girder bridges are repeatedly reported because the tensile stresses in the concrete deck induced by the negative bending moment at the intermediate supports of continuous composite girder bridges. The occurred transverse cracks rapidly deteriorate the concrete deck, giving rise to frequent need for maintenance work. Prestressing methods are usually utilized in this kind of situation for the concrete structures, however no effective and feasible method has yet been proposed for steel-concrete composite structures. A new type of prestressing method entitled Thermal prestressing method (TPSM) has been proposed for innovative construction of continuous composite girder bridges, as effective prestressing method to prevent the occurrence of the tensile transverse crack of the concrete deck at the negative bending moment regions. In this study, the methodology for the economic analysis of TPSM applied bridges and case studies are introduced based on the lifecycle cost, considering initial construction cost and maintenance cost, to demonstrate the financial viability of the TPSM applied bridges compared to conventional continuous composite girder bridges.

KCI등재 SCI SCOPUS

2Experimental and Numerical Study on Cyclic Behaviour of Steel Beam-to-Column Joints

저자 : Jun He , Teruhiko Yoda , Hideaki Takaku , Yu Qing Liu , Airong Chen , Masashi Iura

발행기관 : 한국강구조학회 간행물 : International Journal of Steel Structures 10권 2호 발행 연도 : 2010 페이지 : pp. 131-146 (16 pages)

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Ten specimens are tested to investigate the cyclic behavior of beam-to-column joints of steel frames with joint panels. The performances of the joints with respect to strength, rigidity, and hysteretic performance are examined. Three different loadcarrying mechanisms can be identified. Panel resistance ratio (Rp) is presented for predicting the buckling patterns. The validity of R p is confirmed through the present experimental results. On the basis of the experimental results of steel beam-to-column moment joints, 3-D nonlinear finite element models are established to analyze the mechanical properties of these connections. The load-displacement curves of the finite element analysis are in good agreement with those of the tests in terms of strength and unloading stiffness. A shear lag phenomenon was captured in the beam flanges by not only experimental results but also numerical analysis. Parametric studies are conducted on the connections under monotonic loading to investigate the influences of connection dimension, resistance ratio on the connection behavior. It was found that the failure modes are influenced by the resistance ratio, while the thickness of joint panels resulting in large effects on the strength and stiffness under shear failure mode.

KCI등재 SCI SCOPUS

3Effects of Welding Residual Stress on Compressive Behavior and Ultimate Strength of Corroded Plate

저자 : Shingo Tamagawa , You Chul Kim

발행기관 : 한국강구조학회 간행물 : International Journal of Steel Structures 10권 2호 발행 연도 : 2010 페이지 : pp. 147-155 (9 pages)

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This study examined the effects of welding residual stress on the compressive behavior and the ultimate strength of the corroded plate. First, welding residual stress was obtained by the thermal elastic-plastic analysis. Then, the change of welding residual stress and the deflection due to the volume loss was investigated by using a newly developed program based on FEM. Finally, the effects of welding residual stress on the compressive behavior and the ultimate strength of the corroded plate were investigated by the elastic-plastic large deformation analysis. As results, the beginning point of the reduction of the initial stiffness with welding residual stress was earlier than that without welding residual stress. Such effect was observed significantly in the case that the volume was lost in the region which has compressive residual stress. Furthermore, the ultimate strength of the corroded plate was reduced by welding residual stress regardless of the plate length, the corroded regions and the reduction of the thickness. The effect of welding residual stress on the ultimate strength became small with the decrease of the thickness.

KCI등재 SCI SCOPUS

4Optimized Topology Extraction of Steel-Framed DiaGrid Structure for Tall Buildings

저자 : Dong Kyu Lee , Uwe Starossek , Soo Mi Shin

발행기관 : 한국강구조학회 간행물 : International Journal of Steel Structures 10권 2호 발행 연도 : 2010 페이지 : pp. 157-164 (8 pages)

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This study presents an optimal angle and a topology extraction of diagonal members in a DiaGrid structural system for tall buildings. The angle and topology of diagonal members are achieved by using a computer-oriented SIMP topology optimization. The objective function for the design optimization is to both maximize Eigenfrequency for resisting dynamic responses and minimize mean compliance for static responses. Relative densities subjected to SIMP penalty law are used for both optimization design variables and material properties, and then finite element analysis is carried out by using the relative element density. Frequency and mean compliance sensitivities with respect to relative density are straightforwardly derived by discrete sensitivity formulations. Based on the design sensitivity analysis, an initial topology with a given fixed support is shifted toward a final topology charged by almost voids (0) and solids (1) during every optimization procedure. An optimal DiaGrid topology with the highest stiffness is finally determined to resist both static and dynamic behaviors. Numerical examples with varied fixed support models are studied to find out optimal angles and topologies of diagonal members for a DiaGrid system design.

KCI등재 SCI SCOPUS

5Remaining Moment Capacity of Corroded Steel Beams

저자 : Yasser Sharifi , Reza Rahgozar

발행기관 : 한국강구조학회 간행물 : International Journal of Steel Structures 10권 2호 발행 연도 : 2010 페이지 : pp. 165-176 (12 pages)

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Steel structures are subjected to corrosion due to environmental exposure and inadequate maintenance. As a result, the carrying capacity and hence the level of safety of this structures diminishes with time due to accumulation of corrosion damage (e.g. section loss). For the assessment of the remaining moment capacity of corrosion damaged I-beams, two methods have been proposed in this paper based on the thickness loss data were compiled from four corroded damaged I-beams, namely the simple and accurate assessment methods. These methods give the quantitative relationship between the magnitude of structural defects (loss of thickness) and the corresponding remaining moment capacity (expressed as percentage of the as-new strength) of corrosion damaged beams. These methods require only the information regarding thickness loss of the appropriate elements of the members (flanges and web) and the capacity of the beam in its as-new condition, to assess the remaining moment capacity of a corrosion damaged beam. The thickness loss information can be provided by visual inspection or thickness measurement of a member. These assessment methods will help the practicing engineer to make a fast and reliable decision regarding the remaining moment capacity of corrosion damaged I-beam.

KCI등재 SCI SCOPUS

6Seismic Design, Performance, and Behavior of Composite-Moment Frames with Steel Beam-to-Concrete Filled Tube Column Connections

저자 : Jong Wan Hu , Yoon Sig Kang , Dong Ho Choi , Tae Hyo Park

발행기관 : 한국강구조학회 간행물 : International Journal of Steel Structures 10권 2호 발행 연도 : 2010 페이지 : pp. 177-191 (15 pages)

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Concrete filled steel tube (CFT) columns have been widely used in composite-moment frames (C-MFs) both in non-seismic and in high seismic zones. The objective of this research is to develop a design methodology of such moment resisting frame structures designed with CFT columns in achieving ductile behavior and high strength. These composite-moment frames mostly constructed around the perimeter of the building provide the enough stiffness to withstand the lateral displacement due to wind or seismic loads. In this research, three sets of prototype composite frame models were designed on the basis of the proposed design examples as 3-, 9-, and 20-story post-Northridge SAC buildings with composite-special moment frame (C-SMF) systems designed for the western US area. The exact moment-rotational behavior of steel beam-to-CFT column connections including the strength degradation was simulated using the 2D joint model with the rigid boundary element. Nonlinear pushover analyses were conducted on the numerical frame models so as to evaluate the over-strength, inelastic deformation, and P-Delta effect for the entire structure. The statistical investigation was introduced to nonlinear dynamic analyses under 40 SAC ground motions corresponding to a seismic hazard level of 2% probability of exceedence in 50 years in order to efficiently examine seismic performance and behavior of entire composite frame structures. All frame models meet the allowable limit for safe designs. In addition, the entire frame design becomes conservative as the number of stories increases. The distribution of interstory drift ratios (ISDRs) as well as the over-strength ratio also demonstrates this conservative design of low to high-rise CMF structures.

KCI등재 SCI SCOPUS

7Buckling of Steel Cylindrical Shells with an Elliptical Cutout

저자 : Mahmoud Shariati , Masoud Mahdizadeh Rokhi

발행기관 : 한국강구조학회 간행물 : International Journal of Steel Structures 10권 2호 발행 연도 : 2010 페이지 : pp. 193-205 (13 pages)

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Numerical simulation and analysis of steel cylindrical shells with various diameter and length having an elliptical cutout, subjected to axial compression were systematically carried out in this paper. The investigation examined the influence of the cutout size, cutout angle and the shell aspect ratios L/D and D/t on the pre-buckling, buckling, and post-buckling responses of the cylindrical shells. For several specimens, an experimental investigation was also carried out via an INSTRON 8802 servo hydraulic machine and the results obtained from the experiments were compared with numerical results. A very good accordance was observed between the results obtained from the finite element simulation and the experiments. Furthermore, some equations in the form of a buckling load reduction factor were developed.

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