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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 24, Issue 6 - Dec 2012
Volume 24, Issue 5 - Oct 2012
Volume 24, Issue 4 - Aug 2012
Volume 24, Issue 3 - Jun 2012
Volume 24, Issue 2 - Apr 2012
Volume 24, Issue 1 - Feb 2012
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Compression Test for Prefabricated Composite Columns Using High-Strength Steel Angles
Hwang, Hyeon-Jong ; Eom, Tae-Sung ; Park, Hong-Gun ; Lee, Chang-Nam ; Kim, Hyoung-Seop ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 361~369
DOI : 10.7781/kjoss.2012.24.4.361
In this study, prefabricated composite columns using high-strength angles (PSRC composite column) was studied. Concentric axial loading tests were performed for 2/3 scale PSRC specimens and an conventional SRC specimen with H-steel at the center of the cross-section. The test parameters were the steel ratio of angles and the spacing of lateral re-bars. The test results showed that by placing the angles at the corners of the cross-section for confinement with provided for the core concrete, the PSRC column specimens exhibited greater load-carrying capacity and deformation capacity than those of the conventional SRC column. The axial load-carrying capacity of the PSRC columns was greater than the prediction by KBC 2009. Using existing stress-strain relationship of confined concrete, the axial load-deformation relationship of the specimens were predicted. The numerical predictions correlated well with the test results in terms of initial stiffness, load-carrying capacity, and post-peak strength- and stiffness-degradations.
Structural Performance Evaluations of Steel Hysteretic Damper in Series for High-Rise Shear Wall System
Oh, Sang-Hoon ; Choi, Kwang-Yong ; Ryu, Hong-Sik ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 371~382
DOI : 10.7781/kjoss.2012.24.4.371
Existing shear wall system may cause ductility fallen to the structure which it is on because relatively weak concrete core would easy to be damaged. In this study, steel hysteresis dampers whose stiffness is higher than existing coupling beam and whose strength is easy to change depending on design load was used in coupling beam. The steel hysteresis damper was proposed for the shape connected in double in series, from this, several static test were conducted to verify structural performance of the damper. FEM analysis was also performed, then design equation were suggested.
Study on the Ultimate Strength of Gusset Plate-Circular Hollow Section(CHS) Joint Stiffened with Rib-plate by End Restraint
Kim, Woo-Bum ; Park, Hyun-Ho ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 383~398
DOI : 10.7781/kjoss.2012.24.4.383
A finite element analysis study was performed to investigate the behavior and strength of a Plate-Circular Hollow Section joint stiffened with Rib-plate, Since The strength of plate-Circular Section joint is reduced by joint of stress and local plastic deformation which is caused by wall moment, rib plates are attached to the upper and lower Plate-Circular Hollow Section joint for redistribution of stress. The behaviors of joints stiffened with Rib-plate according to shape of rib and reinforcing method, etc are different from those of joints which is not stiffened. However, the criterion of hollow structural section was limited on some parts. Therefore, this study intends to investigate the behavior and structural capacity of Plate-Circular Hollow Section joints stiffened with Rib-plate and compare the Finite element analysis with the Design Equation. Finally, this study proposes the reasonable ultimate strength formula through the comparisons with other design guide.
Damage Evaluation of Cracked Laminated Composite Plates Using Experimental Modal Analysis
Kim, Joo-Woo ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 399~410
DOI : 10.7781/kjoss.2012.24.4.399
In this study, vibration tests are performed on cantilevered and clamped-clamped laminated composite rectangular plates using experimental modal analysis technique. The damages are simulated by applying progressive line cracks to the laminated composite plates for damage evaluations due to crack growth. The changes of frequency response functions(FRFs), MAC values, and modal parameters (frequency, mode shape and damping ratio) of the damaged composite plates, which are obtained by the modal testing of impact hammer, are investigated. Each experimental modal parameter of the progressively damaged composite plates is compared with natural frequencies and mode shapes obtained by finite element analysis. It is seen that the damage can be evaluated from the changes in the geometric properties and structural behaviors of the laminated composite plates resulting from the model updating process of the finite element model as a benchmark.
Structural Performance Evaluation on Flexural and Shear Capacity for Weight Reducing Steel Wire-Integrated Void Deck Plate Slab
Kim, Sang-Seup ; Ryu, Deog-Su ; Boo, Yoon-Seob ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 411~422
DOI : 10.7781/kjoss.2012.24.4.411
The purpose of this study is to evaluate the flexural and shear capacity of steel wire-integrated void deck plate slabs. In order to evaluate flexural and shear capacity, we make five 150mmspecimens and three 200mmspecimens by slab depth as main variable. Each series of specimen is comprised of an existing steel wire-integrated deck-plate slab and two specimens using topping depth as variable. From the series of experiments, steel wire-integrated void deck plate slabs has any decline in flexural and shear performance. Therefore, a void-deck-plate slab which inserts Omega-steel plate showed reducing a using concrete-volume and had flexural and shear capacity following existing steel wire-integrated deck-plate.
Punching Shear Strength of CFT Column to RC Flat Plate Connections Reinforced with Shearhead
Kim, Jin-Won ; Lee, Cheol-Ho ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 423~433
DOI : 10.7781/kjoss.2012.24.4.423
This paper summarizes full-scale gravity-load test results on CFT column-to-RC flat plate connections reinforced with shearhead. CFT construction has many structural and constructional advantages over conventional steel and RC column construction and is gaining wide acceptance. Meanwhile the use of RC flat plate system in the basement and residential floors of tall buildings is often mandatory to reduce story height and enable rapid construction in domestic practice. Combining CFT column and flat plate floor is expected to result in further rapid construction. However, the issues related to connecting CFT column to RC flat plate have not been fully addressed yet. Several promising connecting schemes by using steel shearhead were proposed and tested in this study. Test results showed that the proposed connection can exhibit the punching shear strength higher than RC flat plate counterparts. An empirical formula that can reasonably predicts the punching shear strength of the proposed connection was also proposed.
Local Buckling of Built-up Square Tubular Compression Members Fabricated with HSA800 High Performance Steels under Concentric Axial Loading
Yoo, Jung-Han ; Kim, Joo-Woo ; Yang, Jae-Keun ; Kang, Joo-Won ; Lee, Dong-Woo ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 435~442
DOI : 10.7781/kjoss.2012.24.4.435
Recently, high performance(strength) steels have been utilized to structural materials in buildings and bridges with the demand for high-rise and long-span of main structures. This paper is a series of basic study for the design specification of structural members using high performance steel, material properties of high performance rolled steel building structures. HSA800 was compared with the requirements of Korean Standards(KS) for HSA800. Welded square tube stub columns with variables of width-to-thickness ratios are planned in order to investigate the local buckling behaviors and check the current design limit of width-to-thickness ratio and uniaxial compressive tests are carried out. In addition, the local buckling behaviors of stub columns obtained finite element analysis were compared with those of test results.
Structural Performance Evaluation to Centrally Compressed CFT Columns Using Seismic Rectangular Steel Tube
Shim, Hyun-Ju ; Choi, Byong-Jeong ; Lee, Eun-Taik ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 443~450
DOI : 10.7781/kjoss.2012.24.4.443
In this study, This study investigates the axial load behavior of concrete-filled steel columns using seismic rectangular steel tube with the width-to-thickness and slenderness ratio. Due to cold-roll forming and cold-press forming of steel tube, the flat part and the corner part of the rectangular steel tubes are changed in the material properties compared to SN-steel plate. It was showed the tendency to increase yield strength, tensile strength and upper limit of yield ratio This phenomenon affects the nonlinear behavior after local buckling of the steel tube. Therefore, the coupon test was performed by the processing of rectangular steel tube, in order to assess forming performance. And a total of 6 CFT-columns were tested under monotonic loading condition. Main parameters were the width-thickness ratio and the slenderness ratio.
Limitations on the Width-to-Thickness Ratio of Rectangular Concrete-Filled Tubular (CFT) Columns
Choi, Young-Hwan ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 451~458
DOI : 10.7781/kjoss.2012.24.4.451
The concrete-filled steel tube (CFT) that has an excellent performance can be more economically used when the steel tube has a large width-to-thickness ratio. However, the international provisions such as American Institute of Steel Construction (AISC) limit the use of a slender plate in CFT members, resulting in a less optimal use of CFT. This study verifies the post buckling strength of CFT columns through the experimental program for Hollow Steel Sections (HSS) and CFTs with a with-to-thickness ratio ranged 60 to 100. The study also proposes a relaxed limitations of with-to-thickness ratio compared to the one specified in the current standards.
Structural Performance Evaluation of End-plate Connections According to Constructional Quality in P.E.B System
Lee, Eun-Taik ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 461~468
DOI : 10.7781/kjoss.2012.24.4.461
P.E.B (Pre-Engineering Building) system means an economical system, which designs and uses optimal section proportion of tapered members according to the magnitude of bending moment. However, it is hard to adjust the friction type bolted joint in the joint of tapered member in the P.E.B system. End-plate connection is mainly used in this system due to that difficulty. Because P.E.B system has end-plate vertical defacts by heat welding deformation, a gap between end-plates and rafter or rib can be observed. In this study, an examination of construction stability was throughly performed and analyzed by the investigation of permissible internal force of bolts in end-plate connections under the bending moment using the end-plate`s initial connection-defect (gap).
An Analytical Study for the Strength of the High Tension Bolted Joints in Plate Girder
Ham, Jun-Su ; Hwang, Won-Sup ; Yang, Sung-Don ; Chung, Jee-Seung ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 469~478
DOI : 10.7781/kjoss.2012.24.4.469
In this study, structural behavior of high tension bolted connections was analyzed in order to investigate effective utilizations. Also, the simplified numerical analysis method showing bolt behavior was proposed using the connector element in the ABAQUS, a nonlinear finite element program and verified by numerical analyses on the basis of the experiment of previous study. In an effort to analyze strength properties of plate girder which high tension bolts are applied to, the effects of each design parameter were compared and analyzed after moment-displacement relations were investigated according to design parameters (upper flange, lower flange, upper and lower flange, web) by action force standards.
Local Buckling and Inelastic Behaviour of 800 MPa High-Strength Steel Beams
Lee, Cheol-Ho ; Han, Kyu-Hong ; Kim, Dae-Kyung ; Park, Chang-Hee ; Kim, Jin-Ho ; Lee, Seung-Eun ; Ha, Tae-Hyu ;
Journal of Korean Society of Steel Construction, volume 24, issue 4, 2012, Pages 479~490
DOI : 10.7781/kjoss.2012.24.4.479
Flexural tests on full-scale H-shaped beams, built up from high-strength steels (HSB800 and HSA800) with a nominal tensile strength of 800 MPa, was carried out to study the effect of flange slenderness of high-strength steel on flexural strength and rotation capacity. The primary objective was to investigate the appropriateness of extrapolating current stability criteria (originally developed for ordinary steel) to high-strength steel. The performance of high-strength steel specimens was very satisfactory from the strength, but not from the rotation capacity, perspective. The inferior rotation capacity of high-strength steel beams was shown to be directly attributable to the absence of a distinct yield plateau and the high yield ratio of the material. Residual stress measurements reconfirmed that the magnitude of the residual stress is almost independent of the yield stress of the base metal.