Analytical prediction of the deformation behavior of headed studs in monotonic push-out tests

Xu, Xiaoqing; Liu, Yuqing

doi:10.1177/1369433218821750

Cited by 15 publications

(6 citation statements)

References 32 publications

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“…Shear stiffness is an important parameter in the design of composite structures [35]. Here, the shear stiffness is defined as the secant slope of the shear load-slip curve at the slip of 0.2 mm [35]. Table 5 lists the experimental results.…”

Section: Shear Stiffnessmentioning

confidence: 99%

Static and Fatigue Behavior of Rubber-Sleeved Stud Shear Connectors as Part of Field-Cast Ultra-High Performance Concrete Connections

Zhang

2020

Materials

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Field-cast ultra-high performance concrete (UHPC) connections are an innovative and prospective solution for combining full-depth precast concrete decks and steel girders. However, previous studies show that the slip capacity of stud shear connectors embedded in UHPC cannot meet the requirements for ductile connectors by Eurocode 4, which can reduce the resistance of steel and concrete composite members. In this study, the rubber-sleeved stud shear connector, which is a composite of ordinary stud and rubber sleeve, was adopted for the field-cast UHPC connections. Push-out tests were conducted to investigate the static and fatigue behavior of the rubber-sleeved stud shear connector as part of field-cast UHPC connections. Results of static tests showed that the rubber-sleeved stud shear connector has sufficient deformation capacity and its slip capacity is 1.5 times that of the ordinary stud shear connector. Compared to ordinary stud shear connectors, UHPC with high strength and stiffness has a relatively small effect on improving the shear strength and stiffness of rubber-sleeve stud shear connectors. Results of fatigue tests showed that the rubber-sleeved stud shear connector in UHPC has similar fatigue behavior to that in normal strength concrete. Though UHPC improves the restraint to the stud deformation, the influence of rubber sleeves is still decisive in determining the fatigue behavior of rubber-sleeve stud shear connectors. In addition, based on the results of strain gauges at stud roots, it was found that the crack initiation process consumes a small proportion of the fatigue life of rubber-sleeved stud shear connectors, which is about 5%.

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Section: Shear Stiffnessmentioning

confidence: 99%

Static and Fatigue Behavior of Rubber-Sleeved Stud Shear Connectors as Part of Field-Cast Ultra-High Performance Concrete Connections

Zhang

2020

Materials

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“…Xu and Liu (2016) established the calculation formula of shear stiffness for the rubber sleeve stud and proposed the calculation method for the lower limit of the shear stiffness. Based on the analysis of the effects of stud diameter and concrete properties on the shear stiffness of studs, Xu and Liu (2019) proposed a new equation for shear stiffness and a new formula for the load-slip curve of headed studs. However, because the shear stiffness equation is based on the secant modulus method of stud load slip curve, it lacks a certain theoretical basis and is conservative compared with the test value.…”

Section: Introductionmentioning

confidence: 99%

A load-slip model for stud connector in steel-concrete composite structures

Fang

Cui

et al. 2022

Advances in Structural Engineering

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A new theoretical calculation method for the load-slip curve and the shear stiffness of the stud based on Winkler’s elastic foundation beam theory and deflection differential equation of the stud is proposed. Different stress characteristics of the elastic and plastic zones of the concrete are considered in the proposed method. The accuracy of the theoretical calculation method is validated by the test results. Moreover, the effect of concrete strength, stud diameter, and yield strength on the stud load-slip curve is analyzed. The results show that the proposed model can effectively reflect the change process of the load-slip curve of the test specimen stud connector. The stud diameter, stud yield strength, and concrete strength affect the peak slip, shear stiffness, and shear capacity of stud shear connectors. With an increase in stud diameter, the peak slip, shear stiffness, and shear bearing capacity of the stud are all increased. An increase in the yield strength of the stud increases its elastic slip, peak slip, and shear capacity. Lastly, with an increase in concrete strength, the elastic slip and peak slip of the stud both decrease, whereas the shear stiffness and shear bearing capacity are increased.

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“…The load-slip curve for shear connectors has three stages: (i) elastic stage, where the initial or secant stiffness is dominant, (ii) the slope of the curve decreases while the damage of concrete gradually grows, (iii) after the failure of specimen, a rapid increase in slip can be observed [5]. The initial stiffness can be calculated for the elastic stage, yielding of headed studs is between 20 and 50% of ultimate shear capacity [6].…”

Section: Introductionmentioning

confidence: 99%

“…The initial stiffness can be calculated for the elastic stage, yielding of headed studs is between 20 and 50% of ultimate shear capacity [6]. Simple analytical formulas are calculating the stiffness of headed studs in function of steel and concrete elastic modulus, headed studs' diameter and height [5,6].…”

Section: Introductionmentioning

confidence: 99%

Investigation the Ductility of Corrugated Embedded Shear Connectors Through Push‐out Tests

Németh

Kovács

2022

ce papers

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The most widely used shear connector of steel‐concrete composite beams is the well‐known headed stud and it can be used for innovative bridge girders with trapezoidal webs embedded in concrete slab as well by horizontally placing the studs on the embedded steel part. Another option for trapezoidal web girders is the closed or open cuts on the corrugated web profile with rebars. In literature, experimental tests and investigation of these kind of shear connectors of embedded steel webs can be found. The focus of the research presented in the paper is on the ductility of embedded trapezoidal corrugated webs with additional mechanical shear connectors. Previous researches have already found that these kind of innovative shear connections have a really advantageous ductile behavior, however further analysis is useful to confirm and investigate their behavior in more details. Force‐displacement diagrams of push‐out experiments of corrugated steel profiles embedded into concrete slab are published in literature and those diagrams serve as a basis of this study. Both elastic and plastic phases of the curves are evaluated, also ductility is analyzed according to the principles of Eurocode.

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Analytical prediction of the deformation behavior of headed studs in monotonic push-out tests

Cited by 15 publications

References 32 publications

Static and Fatigue Behavior of Rubber-Sleeved Stud Shear Connectors as Part of Field-Cast Ultra-High Performance Concrete Connections

Static and Fatigue Behavior of Rubber-Sleeved Stud Shear Connectors as Part of Field-Cast Ultra-High Performance Concrete Connections

A load-slip model for stud connector in steel-concrete composite structures

Investigation the Ductility of Corrugated Embedded Shear Connectors Through Push‐out Tests

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