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G. De Roeck - One of the best experts on this subject based on the ideXlab platform.

  • Parametric study and fatigue-life-cycle design of Shear Studs in composite bridges
    Journal of Constructional Steel Research, 2009
    Co-Authors: Kai Liu, G. De Roeck
    Abstract:

    Abstract Headed Studs are widely used in steel–concrete composite bridges to resist longitudinal Shear forces at the interface of steel girder and concrete slab. These Studs are subjected to high-cycle fatigue loading due to the growth of traffic and increase in train speed. Within the frame of this paper, the dynamic structural behavior of the Shear Studs during train passages is studied. Different fatigue endurance models are employed for fatigue life estimation. A parametric study is performed to investigate the effects of different parameters that influence the fatigue life of Shear Studs. Finally a fatigue-life-cycle design procedure based on the train–bridge interaction analysis and the fatigue endurance model is proposed.

  • damage detection of Shear connectors in composite bridges
    Structural Health Monitoring-an International Journal, 2009
    Co-Authors: G. De Roeck
    Abstract:

    Headed Shear Studs are commonly used to resist longitudinal Shear forces in composite railway bridges. Due to the growth of traffic and increase in train speed, these Studs are subjected to high-cycle fatigue loading which may lead to damage, thus affecting the integrity between the steel girder and the concrete slab. Therefore, it is necessary to find a corresponding nondestructive damage detection method. Within the frame of this paper, the occurrence of damage in Shear Studs is studied by numerical analysis. In the numerical model of a real composite bridge, headed Shear Studs are represented by spring elements. A damage indicator based on the local modal curvature and the wavelet transform modulus maxima is proposed for stud damage identification. The efficiency of the damage indicator is investigated by means of numerical simulations where different levels of damage are introduced to the stud by decreasing the spring stiffness. It is verified that the proposed damage index can be used to locate and t...

U Kuhlmann - One of the best experts on this subject based on the ideXlab platform.

  • Trag‐ und Ermüdungsverhalten liegender Kopfbolzendübel unter Quer‐ und Längsschub
    Stahlbau, 2004
    Co-Authors: Kai Kürschner, U Kuhlmann
    Abstract:

    Neue interessante Verbundquerschnitte aus Stahlbeton und Baustahl im Hoch- und Bruckenbau fuhren unter Berucksichtigung konstruktiver, fertigungstechnischer und wirtschaftlicher Gesichtspunkte zu einer liegenden, d.h. randnahen Anordnung von Kopfbolzendubeln. Infolge des geringen Abstands der Dubelreihe zum freien Plattenrand ergeben sich gegenuber stehenden bzw. randfernen Kopfbolzen unterschiedliche Bettungseigenschaften der Dubel im umgebenden Stahlbeton und somit auch ein abweichendes Trag- und Ermudungsverhalten der Verbundfuge. Im Hinblick auf zukunftige Anwendungen von liegenden Kopfbolzendubeln werden auf Grundlage experimenteller und theoretischer Untersuchungen einfache Bemessungs- und Konstruktionsregeln fur den Nachweis der Verbundfuge unter ruhendem Querschub, ruhendem Quer- und Langsschub und nicht ruhendem Langsschub vorgestellt. Structural and fatigue behaviour of horizontally lying Shear Studs subjected to vertical and longitudinal Shear. In consideration of structural, manufacturing and economic aspects new interesting composite cross sections for buildings and bridges consisting of reinforced concrete and structural steel lead to a horizontally lying arrangement of headed Shear Studs influenced by edge proximity. Compared to common vertical Shear Studs the relatively small distance of horizontally lying Shear Studs from the edge of the slab leads to different bedding conditions of the connectors within the surrounding reinforced concrete material, which results in differing structural and fatigue behaviour of this type of Shear connection. For future applications of horizontally lying Shear Studs on the basis of experimental and theoretical investigations design rules for the Shear connection subjected to monotonic vertical Shear, monotonic vertical and longitudinal Shear and cyclic longitudinal Shear are presented.

  • Trag- und Ermuedungsverhalten liegender Kopfbolzenduebel unter Quer- und Laengsschub / Structural and fatigue behaviour of horizontally lying Shear Studs subjected to vertical and longitudinal Shear
    Stahlbau, 2004
    Co-Authors: K Kuerschner, U Kuhlmann
    Abstract:

    Neue interessante Verbundquerschnitte aus Stahlbeton und Baustahl im Hoch- und Brueckenbau fuehren unter Beruecksichtigung konstruktiver, fertigungstechnischer und wirtschaftlicher Gesichtspunkte zu einer liegenden, das heisst, randnahen Anordnung von Kopfbolzenduebeln. Infolge des geringen Abstands der Duebelreihe zum freien Plattenrand ergeben sich gegenueber stehenden beziehungsweise randfernen Kopfbolzen unterschiedliche Bettungseigenschaften der Duebel im umgebenden Stahlbeton und somit auch ein abweichendes Trag- und Ermuedungsverhalten der Verbundfuge. Im Hinblick auf zukuenftige Anwendungen von liegenden Kopfbolzenduebeln werden auf Grundlage experimenteller und theoretischer Untersuchungen einfache Bemessungs- und Konstruktionsregeln fuer den Nachweis der Verbundfuge unter ruhendem Querschub, ruhendem Quer- und Laengsschub und nicht ruhendem Laengsschub vorgestellt. (A) ABSTRACT IN ENGLISH: In consideration of structural, manufacturing and economic aspects new interesting composite cross sections for buildings and bridges consisting of reinforced concrete and structural steel lead to a horizontally lying arrangement of headed Shear Studs influenced by edge proximity. Compared to common vertical Shear Studs the relatively small distance of horizontally lying Shear Studs from the edge of the slab leads to different bedding conditions of the connectors within the surrounding reinforced concrete material, which results in differing structural and fatigue behaviour of this type of Shear connection. For future applications of horizontally lying Shear Studs on the basis of experimental and theoretical investigations design rules for the Shear connection subjected to monotonic vertical Shear, monotonic vertical and longitudinal Shear and cyclic Iongitudinal Shear are presented. (A)

Gunasekaran Kandasamy - One of the best experts on this subject based on the ideXlab platform.

  • Behavior of Steel–Coconut Shell Concrete–Steel Composite Beam without and with Shear Studs under Flexural Load
    Materials, 2020
    Co-Authors: Lakshmi Thangasamy, Gunasekaran Kandasamy
    Abstract:

    In this study, we investigated using coconut shell concrete (CSC) in double-skin steel plate sandwich beams, i.e., steel-concrete-steel (SCS) under flexure. Two cases-without and with Shear Studs to interconnect the bottom tension and top compression plates-were considered. Conventional concrete (CC) was used for comparison purposes. The effect of quarry dust (QD) in place of river sand (RS) was considered. Therefore, four mixes named as CC, conventional concrete produced using QD (CCQ), CSC and coconut shell concrete produced using QD (CSCQ) were used. Three different steel plate thicknesses were considered (4 mm, 6 mm and 8 mm). In total, twelve SCS specimens were tested to evaluate the flexural performance under two-point static loads. Study parameters include: partial and fully composite, ultimate moment and failures, deflection characteristics, ductility property, cracking behavior and strains in both tension and compression plates. It was found that the moment carrying capacity of the SCS sandwich beams increased when the thickness of the steel plate increased. Our results provided evidence that using QD in place of RS augmented the strength of beams. Theoretical deflections were underestimated the experimental deflection, except in one case. The SCS beams showed good ductility behavior. The SCS beams exhibited crack widths at yielding well below guideline values.

  • behavior of steel coconut shell concrete steel composite beam without and with Shear Studs under flexural load
    Materials, 2020
    Co-Authors: Lakshmi Thangasamy, Gunasekaran Kandasamy
    Abstract:

    In this study, we investigated using coconut shell concrete (CSC) in double-skin steel plate sandwich beams, i.e., steel–concrete–steel (SCS) under flexure. Two cases—without and with Shear Studs to interconnect the bottom tension and top compression plates—were considered. Conventional concrete (CC) was used for comparison purposes. The effect of quarry dust (QD) in place of river sand (RS) was considered. Therefore, four mixes named as CC, conventional concrete produced using QD (CCQ), CSC and coconut shell concrete produced using QD (CSCQ) were used. Three different steel plate thicknesses were considered (4 mm, 6 mm and 8 mm). In total, twelve SCS specimens were tested to evaluate the flexural performance under two-point static loads. Study parameters include: partial and fully composite, ultimate moment and failures, deflection characteristics, ductility property, cracking behavior and strains in both tension and compression plates. It was found that the moment carrying capacity of the SCS sandwich beams increased when the thickness of the steel plate increased. Our results provided evidence that using QD in place of RS augmented the strength of beams. Theoretical deflections were underestimated the experimental deflection, except in one case. The SCS beams showed good ductility behavior. The SCS beams exhibited crack widths at yielding well below guideline values.

Walter Salvatore - One of the best experts on this subject based on the ideXlab platform.

  • Influence of Shear Studs distribution on the mechanical behaviour of dissipative hybrid steel frames with r.c. infill walls
    Bulletin of Earthquake Engineering, 2019
    Co-Authors: Francesco Morelli, Nicola Mussini, Walter Salvatore
    Abstract:

    This paper studies the influence of the Shear Studs distribution, in terms of local and global effects, on the behavior of dissipative hybrid Steel frames with Reinforced Concrete infill Walls (SRCWs). Dissipative SRCWs have been recently proposed as seismic resistant systems, capable of coupling the high stiffness of reinforced concrete walls with the advantages of dissipative systems, in which the energy dissipation takes place in localized and replaceable elements. However, experimental tests showed that the global behavior and the failure mechanism of such systems are strongly influenced by the Shear Studs distribution along the steel frame—reinforce concrete wall interface. In this paper, this issue is studied through suitable numerical models, calibrated on the base of the available experimental results. Several modeling options and strategies are considered and their influence on the final results has been assessed. The resulting numerical model is used to analyze the mechanical behavior of such system and to perform parametric analyses varying the Shear Studs distribution. The results obtained help the understanding of the mechanical behavior and of the resisting mechanisms activated on the studied system, supplying relevant information for the development of more accurate design rules.

  • Dataset on the cyclic experimental behavior of Steel frames with Reinforced Concrete infill Walls.
    Data in Brief, 2018
    Co-Authors: Francesco Morelli, Silvia Caprili, Walter Salvatore
    Abstract:

    Abstract This paper presents the experimental data on the cyclic behavior of Steel frames with Reinforced Concrete infill Walls (SRCW). Two specimens, characterized by a different Shear Studs distribution, have been tested: the first one is provided with Shear Studs positioned only in the four corners of the steel frame; the second one presents Shear Studs all distributed along the perimeter of the steel frame except for the zone of the dissipative fuses. The overall setup, loading protocol, collapse mechanisms, force-displacement curves for both the whole system and the main single components are described for the two tested prototypes.

Abdussamet Arslan - One of the best experts on this subject based on the ideXlab platform.

  • the effect of steel plates with Shear Studs for weak column strong beam connections in the reinforced concrete structures under earthquake effect
    Strain, 2011
    Co-Authors: A. Büyükkaragöz, Abdussamet Arslan
    Abstract:

    :  In this study, the effect of steel plates with Shear Studs used in the weak column–strong beam connections was investigated both experimentally and analytically. Five RC specimens were tested under cyclic loading in the experimental programme. Steel plates with Shear Studs in the column were used along the connection area. The specimens were derived from the exterior joint of a frame. As the main parameters, the width of Shear stud heads and their spacing on the steel plates were changed to investigate their effects on the weak column. The test results confirmed that Shear Studs improved the strength and stiffness of the specimens. The control specimen collapsed because of joint failure, while the other four specimens collapsed because of bending at the bottom of the beam showing ductile behaviour. The comparison of experimental results with the analytical results obtained from ANSYS finite element programme showed similar outputs from the aspects of behaviour.

  • The Effect of Steel Plates with Shear Studs for Weak Column–Strong Beam Connections in the Reinforced Concrete Structures under Earthquake Effect
    Strain, 2010
    Co-Authors: A. Büyükkaragöz, Abdussamet Arslan
    Abstract:

    :  In this study, the effect of steel plates with Shear Studs used in the weak column–strong beam connections was investigated both experimentally and analytically. Five RC specimens were tested under cyclic loading in the experimental programme. Steel plates with Shear Studs in the column were used along the connection area. The specimens were derived from the exterior joint of a frame. As the main parameters, the width of Shear stud heads and their spacing on the steel plates were changed to investigate their effects on the weak column. The test results confirmed that Shear Studs improved the strength and stiffness of the specimens. The control specimen collapsed because of joint failure, while the other four specimens collapsed because of bending at the bottom of the beam showing ductile behaviour. The comparison of experimental results with the analytical results obtained from ANSYS finite element programme showed similar outputs from the aspects of behaviour.