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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 26, Issue 6 - Dec 2014
Volume 26, Issue 5 - Oct 2014
Volume 26, Issue 4 - Aug 2014
Volume 26, Issue 3 - Jun 2014
Volume 26, Issue 2 - Apr 2014
Volume 26, Issue 1 - Feb 2014
Selecting the target year
A Study on Verification Tests according to Connection Design Methods of Steel Plate Concrete Structures
Hwang, Kyeong Min ; Lee, Kyung Jin ; Yang, Hyun Jung ; Kim, Won Ki ;
Journal of Korean Society of Steel Construction, volume 26, issue 1, 2014, Pages 1~10
DOI : 10.7781/kjoss.2014.26.1.001
In this study, out-of-plane flexural test was performed to analyze behavior properties for a beam specimen which imitated a structure with connection member between reinforced concrete and steel plate concrete part. Tie bars between a upper and a lower steel plate, and tie wide flange shapes between upper and lower ribs were designed to prevent the steel plate or the ribs from breakaway in the connection of the specimen. As a result of the test, ductile failure behavior of the specimen and the functionality of the tie members were conformed as originally intended. Also, tension tests were performed to evaluate the design appropriateness of two specimens produced to anchor and connect mechanically #14 bars. The two test results showed that the anchorage connection system behaves in elastic limit during the main bars yielded, and the integrity of the designed system was verified.
Shear Resistance of CIP Anchors under Dynamic Loading: Unreinforced Anchor
Park, Yong Myung ; Kang, Moon Ki ; Kim, Dong Hyun ; Lee, Jong Han ; Kang, Choong Hyun ;
Journal of Korean Society of Steel Construction, volume 26, issue 1, 2014, Pages 11~20
DOI : 10.7781/kjoss.2014.26.1.011
The Concrete Capacity Design(CCD) method has been used in the design of anchor since 2001 and Korean design code specify that concrete breakout capacity of CIP anchor under seismic load shall be taken as 75% of static capacity. In this study, an experimental study was performed to evaluate the concrete breakout capacity of unreinforced CIP anchors under dynamic shear force. For the purpose, three static and dynamic shear-loading tests were conducted using 20mm diameter anchors, respectively. The edge distance of 120mm was considered in the tests. In the dynamic tests, 15 cycles pulsating load with 1Hz speed was applied and the magnitude of loading step was increased until concrete breakout failure occurs. From the tests, the concrete breakout capacity under dynamic shear loading showed nearly same capacity by static loading.
Shear Resistance of CIP Anchors under Dynamic Loading: Reinforced Anchor
Park, Yong Myung ; Kang, Moon Ki ; Roh, Jin Kyung ; Ju, Ho Jung ; Kang, Choong Hyun ;
Journal of Korean Society of Steel Construction, volume 26, issue 1, 2014, Pages 21~30
DOI : 10.7781/kjoss.2014.26.1.021
In this study, an experimental study was performed to evaluate the shear resistance of cast-in-place(CIP) anchors reinforced with hairpin and stirrup bars under static and dynamic loads. The reinforcement was developed using D6 bars, and the anchors were installed with 20mm diameter and 120mm edge distance. Three tests were conducted for each type of reinforced anchor under static and dynamic shear load with a pulsating frequency of 1 Hz, respectively. It was found that the strength of hairpin-reinforced anchor was affected by the concrete cover and the dynamic tests showed no capacity reduction of anchors compared with static tests. The stirrup-reinforced anchor showed little increase of resistance compared with unreinforced anchor and the resistance under dynamic loading showed nearly same strength by static loading.
Eccentric Axial Load Test for Concrete-Filled Tubular Columns Encased with Precast Concrete
Lee, Ho Jun ; Park, Hong Gun ; Kim, Sung Bae ; Park, Sung Soon ;
Journal of Korean Society of Steel Construction, volume 26, issue 1, 2014, Pages 31~42
DOI : 10.7781/kjoss.2014.26.1.031
In this paper, concrete-filled steel tubular columns encased with precast reinforced concrete were studied. Four eccentrically loaded columns and a concentrically loaded column were tested to investigate the axial load-carrying capacity. The test parameters were the use of fiber reinforcement for cover concrete, eccentricity, column length, and lateral reinforcement. The maximum axial loads of the specimens agreed with the nominal strengths predicted by KBC 2009. However, in some specimens, the load carrying capacity quickly decreased after the peak strength due to spalling of the cover concrete.
Design Methods for Eccentrically Loaded Bolt Groups for the Single Plate Connections Considering Sloped Edge Distance
Choi, Sun Kyu ; Yoo, Jung Han ; Park, Jai Woo ;
Journal of Korean Society of Steel Construction, volume 26, issue 1, 2014, Pages 43~53
DOI : 10.7781/kjoss.2014.26.1.043
A single plate connection(SPC) consists of a plate welded to the columns and bolts connected to the beam web. The SPC is widely used for a simple shear connection of steel structure because it is easy-to-fabricated, easy-to-installed and economical. The conventional SPC is used for 2 to 12 bolts in a single vertical row. It is designed to limit the plate thickness by bolt diameter to obtain flexible and ductile connections. The design strength for eccentric shear shall be the lesser of the shear strength of bolts or bearing strength of plate and when the design strength is decided by edge distance failure, the results can be very conservative. Although the research on special solution for 'weak-plate/strong-bolt' model with 2 to 4 bolts has been conducted by L. S. Muir, and W. A. Thonton, 2004, study on generalized design procedures did not conduct. This study proposed design procedure for evaluation of the design strength of eccentric shear bolt groups on a single plate connection based on the actual edge distance and the direction of bolt reaction forces by using elastic vector method(EVM) and instantaneous center of rotation method(ICM).
Cyclic Loading Test for Beam-to-Column Connections of Concrete Encased CFT Column
Park, Hong Gun ; Lee, Ho Jun ; Park, Sung Soon ; Kim, Sung Bae ;
Journal of Korean Society of Steel Construction, volume 26, issue 1, 2014, Pages 55~68
DOI : 10.7781/kjoss.2014.26.1.055
In this study, the beam-to column connections of concrete-encased-and-filled steel tube columns were tested under cyclic loading. Two specimens using steel beams and two specimens using precast concrete beams were tested. The dimension of the column cross section was
. The beam depths were 488mm and 588mm for the steel beams and 700mm for the precast concrete beams. The longitudinal bar ratios of the precast concrete beams were 1.1% and 1.5%. For the connections to the steel beams, continuity plates were used in the tube columns. For the connections to the PC beams, couplers were used for beam re-bar connections. The test results showed that except for a specimen, deformation capacities of the specimens were greater than 4% rotation angle, which is the requirement for the Special Moment Frame. Particularly, specimens using precast concrete beam showed excellent performances in the strength, deformation, and energy dissipation.