The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Yoonseob Boo - One of the best experts on this subject based on the ideXlab platform.
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structural performance evaluation on flexural and shear capacity for weight reducing steel wire integrated void Deck Plate slab
Journal of Korean Society of Steel Construction, 2012Co-Authors: Sang Seup Kim, Deogsu Ryu, Yoonseob BooAbstract: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.
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flexural capacity and co 2 reduction evaluation for composite beam with weight reducing steel wire integrated void Deck Plate slab
Journal of Korean Society of Steel Construction, 2012Co-Authors: Sangseop Kim, Dongsoo Park, Yoonseob BooAbstract:The purpose of this study is to evaluate reduction and the flexural performance of steel wire-integrated void Deck Plate slabs that were inserted in omega-shaped steel Plates to reduce concrete and welded H-section beams. The void Deck Plate slab can secure the structure, not only reducing the weight of the building but it is also eco-friendly. Therefore, this study evaluated the flexural performance of the composite beam by conducting a monotonic loading test with the use of actuators. It quantitatively evaluated the emission based on earlier studies. The main test parameters are the concrete thickness of upper slabs, and the interrupted width of the omega-shaped steel Plate. The result of the test showed that the welded H-section beam applied steel wire-integrated void Deck Plate slabs that were inserted into the omega-shaped steel Plate declined in flexural performance on the composite beam after reducing concrete volume. Likewise, it is effective in reducing .
Sang Seup Kim - One of the best experts on this subject based on the ideXlab platform.
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Flexural behavior of an alternative lath mortar Deck Plate
International Journal of Steel Structures, 2016Co-Authors: Sung Bae Kim, Min-joung Kang, Sang Seup KimAbstract:In the domestic construction industry field nowadays, the usage of Deck Plates is currently increasing due to the lack of construction workers and the rised in construction cost. However, using Deck Plates manufactured by thin zinc galvanization in underground structures is criticized because it can lead to increase in maintenance cost caused by rust generation and water leakage. As a solution for this particular problem, Deck Plates created by Lath and Mortar instead of zinc galvanized steel sheets were developed. This paper deals with the experimental study on flexural behavior of Deck Plate using metal lath and mortar. Seventeen full scale specimens were constructed and tested with different type of truss, the diameter of the top and bottom bar, and the thickness of slab. Tests results show that LAMO Deck displayed equal performance such as zinc galvanized steel sheets.
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the shear strength evaluation of the new shear connector by push out test
Journal of the Korean Society of Hazard Mitigation, 2014Co-Authors: Sung Bae Kim, Chan Hwangbo, Tae Gyu Lee, Han Sol Cho, Sang Seup KimAbstract:In a composite beam, a Shear connector is installed to resist the horizontal shear on the interface between steel beams and reinforced concrete slabs. The steel-wire-integrated Deck Plate slab is commonly used on the wide section beam. Then vertical bars are installed on the upper wire of the ends of the steel truss girder to ensure safety during construction. This paper develops a new shape shear connector which can replace the shear connector and vertical bar in a steel wire-integrated Deck Plate and evaluates shear strength by Push-out Test. 40 specimens were tested. Plate thickness and strength of concrete are parameters in Push-out Test. From the Pust-out Test, the new shear connector showed a higher shear capacity and ductility than a stud connector, and functioned as a vertical bar and shear connector.
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structural performance evaluation on flexural and shear capacity for weight reducing steel wire integrated void Deck Plate slab
Journal of Korean Society of Steel Construction, 2012Co-Authors: Sang Seup Kim, Deogsu Ryu, Yoonseob BooAbstract: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.
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An Experimental Study on the Vibration and Fire Resistance of Steel Void Deck Plate Slab for Omega-steel Plate
Journal of Korean Society of Steel Construction, 2011Co-Authors: Sang Seup Kim, Deogsu RyuAbstract:This study was conducted to assess the vibration capacity and the fire resistance capacity of a Deck Plate slab using an omega steel Plate as the void Deck Plate. First, to evaluate the vibration capacity of the Deck Plate slab after the insertion of the omega steel Plate, three 150mm specimens and three 200mm specimens were made using the slab depth as the main variable. Each specimen consisted of an existing Deck Plate and two specimens, using the topping depth as the variable according to the slab depth. Second, two real-size specimens were made to evaluate the fire resistance capacity. The results of the test showed that the steel-wire-integrated Deck Plate slab that was inserted in the omega steel Plate did not have a vibration problem due to the void Deck Plate, because the natural frequency was 12.66-14.09 Hz in the vibration test, and each specimen satisfied the appraisal standards for the load capacity, heat block quality, and chloride inhibition for two hours in the fire resistance test. Consequently, the steel-wire-integrated Deck Plate slab that was inserted in the omega steel Plate can be reduced using the concrete volume and can have higher vibration and fire resistance capacities, similar to the existing Deck Plate.
Deogsu Ryu - One of the best experts on this subject based on the ideXlab platform.
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structural performance evaluation on flexural and shear capacity for weight reducing steel wire integrated void Deck Plate slab
Journal of Korean Society of Steel Construction, 2012Co-Authors: Sang Seup Kim, Deogsu Ryu, Yoonseob BooAbstract: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.
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An Experimental Study on the Vibration and Fire Resistance of Steel Void Deck Plate Slab for Omega-steel Plate
Journal of Korean Society of Steel Construction, 2011Co-Authors: Sang Seup Kim, Deogsu RyuAbstract:This study was conducted to assess the vibration capacity and the fire resistance capacity of a Deck Plate slab using an omega steel Plate as the void Deck Plate. First, to evaluate the vibration capacity of the Deck Plate slab after the insertion of the omega steel Plate, three 150mm specimens and three 200mm specimens were made using the slab depth as the main variable. Each specimen consisted of an existing Deck Plate and two specimens, using the topping depth as the variable according to the slab depth. Second, two real-size specimens were made to evaluate the fire resistance capacity. The results of the test showed that the steel-wire-integrated Deck Plate slab that was inserted in the omega steel Plate did not have a vibration problem due to the void Deck Plate, because the natural frequency was 12.66-14.09 Hz in the vibration test, and each specimen satisfied the appraisal standards for the load capacity, heat block quality, and chloride inhibition for two hours in the fire resistance test. Consequently, the steel-wire-integrated Deck Plate slab that was inserted in the omega steel Plate can be reduced using the concrete volume and can have higher vibration and fire resistance capacities, similar to the existing Deck Plate.
Xiao Ling Zhao - One of the best experts on this subject based on the ideXlab platform.
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stress analyses and fatigue evaluation of rib to Deck joints in steel orthotropic Decks
International Journal of Fatigue, 2008Co-Authors: Zhigang Xiao, Samol Ya, Kentaro Yamada, Xiao Ling ZhaoAbstract:The transverse distribution of wheel loads in orthotropic Decks generates significant out-of-plane bending moments in the Deck Plate and rib wall at the rib-to-Deck joint. Due to the relatively small thickness of both the Deck Plate and rib wall, the out-of-plane bending moments result in high local flexural stresses causing fatigue cracks to develop at the joint. In this study, the transverse stresses within the joint region that arise under the action of wheel loads are investigated with finite element analyses. Based on the stress results and the basic theories of linear elastic fracture mechanics, the design fatigue strength is determined for the joint. Factors affecting the stress range are also studied. The analyses show that the surface stresses in the Deck Plate are much larger than those in the rib wall in the case of 75% weld penetration into the rib wall, indicating that the fatigue strength of the joint is governed by the fatigue cracks propagating into the thickness of Deck Plate. It is also shown with finite element analyses that increasing the distribution area of wheel load or the thickness of Deck Plate can reduce the stress range of the Deck Plate and increase significantly the fatigue life of the joint.
Kentaro Yamada - One of the best experts on this subject based on the ideXlab platform.
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fatigue evaluation of rib to Deck welded joints of orthotropic steel bridge Deck
Journal of Bridge Engineering, 2011Co-Authors: Samol Ya, Kentaro Yamada, Toshiyuki IshikawaAbstract:This study reported fatigue test results of 300-mm-wide specimens with three details: 80% partial joint penetration (80%PJP), weld melt-through (WMT), and both. The specimens were cut out from full-scale orthotropic Deck specimens of 16-mm-thick Deck Plate. In the fatigue test, the Deck Plate was subjected to cyclic bending loading and the rib was free from loading. The fatigue fracture surfaces showed that the presence of WMT may affect the initiation of fatigue cracks. A propensity to root cracking rather than toe cracking was observed. Plotting fatigue test results in an S-N diagram showed that the specimens with WMT seemed to have slightly lower fatigue strengths than the 80%PJP specimens, but the difference is more likely to be within a usual scatter of test data, which means that both details have comparable fatigue strength. The present test results satisfied the S-N curves of JSSC-E (80 MPa at 2×106 cycles) or AASHTO-C (89 MPa at 2×106 cycles).
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fatigue durability of trough rib to Deck Plate welded detail of some orthotropic steel Decks
構造工学論文集 Ａ, 2010Co-Authors: Y A Samol, Kentaro Yamada, Toshiyuki IshikawaAbstract:In this study, a number of orthotropic steel Deck models are studied on their trough rib to Deck welded joint at span center with regard to root-Deck and root-weld fatigue cracks. It is found that increase in Deck Plate thickness can prolong fatigue lives of the joints regard to both fatigue cracks. Wheel position has also large influence on fatigue life of the joint. The wheel located between the trough ribs gives less damage to the joint. The longer span of trough rib tends to be more venerable to fatigue than the shorter one for root weld crack, but asphalt pavement of 75mm or 100mm thick makes not much difference in increasing in fatigue lives of the joint when load distribution is considered for half period of the year.
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stress analyses and fatigue evaluation of rib to Deck joints in steel orthotropic Decks
International Journal of Fatigue, 2008Co-Authors: Zhigang Xiao, Samol Ya, Kentaro Yamada, Xiao Ling ZhaoAbstract:The transverse distribution of wheel loads in orthotropic Decks generates significant out-of-plane bending moments in the Deck Plate and rib wall at the rib-to-Deck joint. Due to the relatively small thickness of both the Deck Plate and rib wall, the out-of-plane bending moments result in high local flexural stresses causing fatigue cracks to develop at the joint. In this study, the transverse stresses within the joint region that arise under the action of wheel loads are investigated with finite element analyses. Based on the stress results and the basic theories of linear elastic fracture mechanics, the design fatigue strength is determined for the joint. Factors affecting the stress range are also studied. The analyses show that the surface stresses in the Deck Plate are much larger than those in the rib wall in the case of 75% weld penetration into the rib wall, indicating that the fatigue strength of the joint is governed by the fatigue cracks propagating into the thickness of Deck Plate. It is also shown with finite element analyses that increasing the distribution area of wheel load or the thickness of Deck Plate can reduce the stress range of the Deck Plate and increase significantly the fatigue life of the joint.
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fatigue durability evaluation of trough to Deck Plate welded joint of orthotropic steel Deck
Structural Engineering \ Earthquake Engineering, 2008Co-Authors: Y A Samol, Kentaro YamadaAbstract:The present study is intended as analysis investigations of fatigue durability of the trough to Deck Plate welded joint failed at weld root in Deck Plate. The investigations are carried out on the basis of three key factors: fatigue strengths of the welded details obtained by analysis method in conjunction with fatigue tests, stress ranges by FEM analyses with a unit wheel load, and the loads and their frequencies for the fatigue evaluations are the wheel loads in service, represented by an equivalent wheel load, assumed from the axle load measurements. Consistency between fatigue strength and stress range is simply demonstrated. Using this method for fatigue evaluation, it is found that large-rib-Deck model has longer fatigue life than standard-Deck models. An increase in Deck Plate thickness may prolong fatigue life of the orthotropic steel Deck. Load distribution due to the rigidity of pavement may also help enhancement the fatigue life.
