The Experts below are selected from a list of 14589 Experts worldwide ranked by ideXlab platform

Su-min Kang - One of the best experts on this subject based on the ideXlab platform.

  • Structural Performance of PC Double Beam–Column Connection Under Gravity and Seismic Loading
    International Journal of Concrete Structures and Materials, 2020
    Co-Authors: Jang-woon Baek, Su-min Kang, Tae-ho Kim, Jin-yong Kim
    Abstract:

    Recently, as a new precast concrete (PC) construction method for increasing economy and constructability, the PC double-beam system has been developed for factories or logistic centers, where construction duration is particularly important. In this study, half-scaled PC double beam–Column Connection was tested under gravity loading and cyclic lateral loading. The major test parameters included the use of the spliced PC Column and the addition of reinforcement at the beam–Column joint. In the gravity loading test, the flexural behavior of the PC double beam was investigated. The test results showed satisfactory flexural capacity at the PC double-beam section, validating the composite action between the PC and RC members. In the cyclic lateral loading test, the seismic performance of the PC double beam–Column Connection was investigated. Based on the test results, the failure mode, load-carrying capacity, deformation capacity, energy dissipation capacity, secant stiffness, and shear strength of the PC double-beam system were evaluated and compared with those of a conventional RC double beam–Column Connection. According to the test results, the structural performance of the PC double beam–Column Connection was comparable to that of the RC double beam–Column Connection and satisfied the acceptance criteria of moment frame in the ACI 374.1-05 provision.

  • punching shear behavior of shear reinforced slab Column Connection with varying flexural reinforcement
    International Journal of Concrete Structures and Materials, 2019
    Co-Authors: Jae-ick Jang, Su-min Kang
    Abstract:

    The effects of flexural reinforcement and shear reinforcement on the punching shear strength of slab–Column Connections are analyzed in this study. For the study, six slab–Column Connection specimens were constructed with varying flexural reinforcement and shear reinforcement, and were subjected to gravity load tests. Experimental results showed that all specimens were destroyed by punching failure, and that the slab–Column Connection behaved differently depending on the amount of shear reinforcement and flexural reinforcement. Particularly, the flexural reinforcement in the slab–Column Connection improved the punching strength of the specimens with or without shear reinforcement. In addition, in this study, a design formula that considers the flexural reinforcement ratio in the calculation of the punching shear strength of the shear reinforced slab–Column Connection was proposed and was verified using experimental results and existing test data.

  • Punching Shear Behavior of Shear Reinforced Slab–Column Connection with Varying Flexural Reinforcement
    International Journal of Concrete Structures and Materials, 2019
    Co-Authors: Jae-ick Jang, Su-min Kang
    Abstract:

    The effects of flexural reinforcement and shear reinforcement on the punching shear strength of slab–Column Connections are analyzed in this study. For the study, six slab–Column Connection specimens were constructed with varying flexural reinforcement and shear reinforcement, and were subjected to gravity load tests. Experimental results showed that all specimens were destroyed by punching failure, and that the slab–Column Connection behaved differently depending on the amount of shear reinforcement and flexural reinforcement. Particularly, the flexural reinforcement in the slab–Column Connection improved the punching strength of the specimens with or without shear reinforcement. In addition, in this study, a design formula that considers the flexural reinforcement ratio in the calculation of the punching shear strength of the shear reinforced slab–Column Connection was proposed and was verified using experimental results and existing test data.

Jae-ick Jang - One of the best experts on this subject based on the ideXlab platform.

  • punching shear behavior of shear reinforced slab Column Connection with varying flexural reinforcement
    International Journal of Concrete Structures and Materials, 2019
    Co-Authors: Jae-ick Jang, Su-min Kang
    Abstract:

    The effects of flexural reinforcement and shear reinforcement on the punching shear strength of slab–Column Connections are analyzed in this study. For the study, six slab–Column Connection specimens were constructed with varying flexural reinforcement and shear reinforcement, and were subjected to gravity load tests. Experimental results showed that all specimens were destroyed by punching failure, and that the slab–Column Connection behaved differently depending on the amount of shear reinforcement and flexural reinforcement. Particularly, the flexural reinforcement in the slab–Column Connection improved the punching strength of the specimens with or without shear reinforcement. In addition, in this study, a design formula that considers the flexural reinforcement ratio in the calculation of the punching shear strength of the shear reinforced slab–Column Connection was proposed and was verified using experimental results and existing test data.

  • Punching Shear Behavior of Shear Reinforced Slab–Column Connection with Varying Flexural Reinforcement
    International Journal of Concrete Structures and Materials, 2019
    Co-Authors: Jae-ick Jang, Su-min Kang
    Abstract:

    The effects of flexural reinforcement and shear reinforcement on the punching shear strength of slab–Column Connections are analyzed in this study. For the study, six slab–Column Connection specimens were constructed with varying flexural reinforcement and shear reinforcement, and were subjected to gravity load tests. Experimental results showed that all specimens were destroyed by punching failure, and that the slab–Column Connection behaved differently depending on the amount of shear reinforcement and flexural reinforcement. Particularly, the flexural reinforcement in the slab–Column Connection improved the punching strength of the specimens with or without shear reinforcement. In addition, in this study, a design formula that considers the flexural reinforcement ratio in the calculation of the punching shear strength of the shear reinforced slab–Column Connection was proposed and was verified using experimental results and existing test data.

Faouzi Ghrib - One of the best experts on this subject based on the ideXlab platform.

  • flexural strengthening of reinforced concrete slab Column Connection using cfrp sheets
    Construction and Building Materials, 2014
    Co-Authors: Hazem A Elenein, Khaled Sennah, Hossein Azimi, Faouzi Ghrib
    Abstract:

    Abstract The objective of this paper is to investigate experimentally the effectiveness of application of carbon fiber reinforced polymer (CFRP) sheets as a strengthening technique of a reinforced concrete (RC) slab–Column Connection in one-way flat-plate system to enhance its flexural strength. The experimental study was particularly conducted to examine whether there is enough anchorage with the use of CFRP wrapping to the discontinuous longitudinal CFRP sheets at Column stub. Series of tests were conducted on six flat slab–Column Connection specimens organized in two groups of three specimens each. The first group included three control specimens with central, eccentric, and edge Columns, respectively. The second group was geometrically identical to the first group, though with CFRP sheets installed on the tension side of the slab to increase flexural capacity at the negative moment region. The specimens with eccentric and edge Columns are those having geometrical eccentricity and whose results are compared with those obtained for specimens with central Column to study the effect of Column eccentricity. The experimental work included fabrication of specimens and testing them under increasing monotonic gravity loads up to failure. Experimental results demonstrated that the flexural ultimate load carrying capacity increased by 33%, 37% and 67% for the tested specimens with central, eccentric, and edge Column, respectively, when strengthened using CFRP sheets. The cross-sectional analysis was also undertaken to compare the experimental results with those obtained from Canadian Standards for FRP design for buildings.

Richard Sause - One of the best experts on this subject based on the ideXlab platform.

  • experimental study of a self centering beam Column Connection with bottom flange friction device
    Journal of Structural Engineering-asce, 2009
    Co-Authors: Michael Wolski, James M Ricles, Richard Sause
    Abstract:

    A new beam-to-Column Connection for earthquake-resistant moment-resisting frames is introduced. The Connection has a beam bottom flange friction device (BFFD) and posttensioned (PT) high-strength steel strands running parallel to the beam. The BFFD provides energy dissipation to the Connection and avoids interference with the floor slab. The PT strands produce self-centering Connection behavior. The Connection behavior requires minimal inelastic deformation of the Connection components and the beams and Columns, and requires no field welding. A series of seven large-scale tests were performed to investigate the effect of the BFFD friction force, Connection details, and the loading history on the performance of the Connection under cyclic loading. The test results indicate that the BFFD provides reliable energy dissipation, and that the Connection remains damage-free under the design earthquake.

  • Experimental Study of a Self-Centering Beam–Column Connection with Bottom Flange Friction Device
    Journal of Structural Engineering, 2009
    Co-Authors: Michael Wolski, James M Ricles, Richard Sause
    Abstract:

    A new beam-to-Column Connection for earthquake-resistant moment-resisting frames is introduced. The Connection has a beam bottom flange friction device (BFFD) and posttensioned (PT) high-strength steel strands running parallel to the beam. The BFFD provides energy dissipation to the Connection and avoids interference with the floor slab. The PT strands produce self-centering Connection behavior. The Connection behavior requires minimal inelastic deformation of the Connection components and the beams and Columns, and requires no field welding. A series of seven large-scale tests were performed to investigate the effect of the BFFD friction force, Connection details, and the loading history on the performance of the Connection under cyclic loading. The test results indicate that the BFFD provides reliable energy dissipation, and that the Connection remains damage-free under the design earthquake.

  • cyclic load tests and analysis of bolted top and seat angle Connections
    Journal of Structural Engineering-asce, 2003
    Co-Authors: Maria Eugenia Moreyra Garlock, James M Ricles, Richard Sause
    Abstract:

    The behavior of angles in a bolted angle beam-to-Column Connection is experimentally investigated. The purpose of this investigation is to determine how the angle size and bolt gage length, defined...

Sang Seup Kim - One of the best experts on this subject based on the ideXlab platform.

  • strength evaluation of beam Column Connection in the weak axis of h shaped Column
    Engineering Structures, 2008
    Co-Authors: Sang Dae Kim, Sang Seup Kim
    Abstract:

    Abstract There have been many studies performed on steel beam–Column Connections, and many Connection details that can improve seismic performance and Connection strength have been developed and are in use. However, the conventional type of Connection with a bracket is preferred in Korea’s construction market. This study develops, by experiment and theoretical analysis, an easy-to-construct beam–Column Connection that also ensures the flexural behaviour of the weak axis Connection so that the steel structure system can be used in constructing low-rise buildings. This study also proposes basic data for structural design and construction of the beam–Column Connection of the H-shaped Column’s weak axis.

  • Strength evaluation of beam–Column Connection in the weak axis of H-shaped Column
    Engineering Structures, 2008
    Co-Authors: Sang Dae Kim, Sang Seup Kim
    Abstract:

    Abstract There have been many studies performed on steel beam–Column Connections, and many Connection details that can improve seismic performance and Connection strength have been developed and are in use. However, the conventional type of Connection with a bracket is preferred in Korea’s construction market. This study develops, by experiment and theoretical analysis, an easy-to-construct beam–Column Connection that also ensures the flexural behaviour of the weak axis Connection so that the steel structure system can be used in constructing low-rise buildings. This study also proposes basic data for structural design and construction of the beam–Column Connection of the H-shaped Column’s weak axis.