Analytical model for the Load-Slip behavior of headed stud shear connectors

Meng, Hao; Wang, Wei; Xu, Rongqiao

doi:10.1016/j.engstruct.2021.113631

Cited by 18 publications

(9 citation statements)

References 50 publications

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“…Researchers have provided equivalent foundation stiffness formulae using experimental [ 36 , 37 ] and 3D FEM [ 35 ] approaches. However, the dispersion between the formulae is significant.…”

Section: Analytical Trilinear Modelmentioning

confidence: 99%

“…Meng et al [ 35 ] and Xu et al [ 38 ] investigated the height of the concrete plastic zone using the analytical approach and the 3D FEM, respectively. The comparison between the concrete plastic zone d assumed in the present model and those provided by the existing literature are shown in Table 1 .…”

Section: Analytical Trilinear Modelmentioning

confidence: 99%

“…It is evident that the Winkler foundation beam model can reflect the force transfer mechanism of shear connectors more accurately and offer broader parameter applicability and better expandability theoretically. Meng et al [ 35 ] analyzed the load–slip behavior of headed stud shear connectors in existing tests and developed an entire load–slip curve for headed stud shear connectors based on the beam on Winkler foundation model and the stress–strain relationship of the concrete and stud, and first proposed the load–slip curve formula based on the mechanical model.…”

Section: Introductionmentioning

confidence: 99%

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A Trilinear Model for the Load–Slip Behavior of Headed Stud Shear Connectors

Meng

Wang

2023

Materials

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Headed stud shear connectors are most broadly applied in various composite structures. There exist plenty of empirical formulae for load–slip curves. However, most of them are fitting formulae in particular forms. Due to the lack of physical model support, fitting empirical formulae apply only to cases with similar parameters to the tests. Therefore, this paper analyzes the load–slip curves of existing headed stud connectors, proposes three stages of slip deformation in the shear connectors and the corresponding trilinear model, and presents the analytical formulae for the stiffness and strength of headed stud shear connectors. Firstly, we model the headed studs and surrounding concrete as beams on the foundation model, derive the equivalent shear stiffness equations for headed studs, and establish the load–slip behaviors for the first two stages. Then, the connectors’ shear stiffness and shear strength in the third stage are derived based on the head stud’s plastic deformation characteristics and failure mode. Finally, the numerical results are presented and verified with the existing test results, showing that the trilinear model is conceptually straightforward, easy to apply, and has sufficient accuracy.

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Section: Analytical Trilinear Modelmentioning

confidence: 99%

Section: Analytical Trilinear Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Trilinear Model for the Load–Slip Behavior of Headed Stud Shear Connectors

Meng

Wang

2023

Materials

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“…Wang et al [11] showed that the shear bearing capacity and shear stiffness of the studs were positively correlated with the length-diameter ratio through 24 groups of push-out tests; however, the shear stiffness varied less when the length-diameter ratio exceeded 10. Meng et al [12] suggested an analytical model for describing the shear behaviors of headed stud shear connectors by analyzing the force-slip curves and failure modes in the literature, which could predict the load-slip curve in good agreement with the existing experimental data. Wu et al [13] showed that the shear strength of stud shear connectors could be improved by appropriately increasing the ultimate tensile strength and diameter of the studs and improving the concrete strength through push-out tests and finite element analyses.…”

Section: Introductionmentioning

confidence: 99%

Study on the Flexural Behavior of Steel-Concrete Composite Beams Based on the Shear Performance of Headed Stud Connectors

2022

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Headed studs have been widely used as shear connectors in steel-concrete composite beams for a long time. Studies on the influence of the different shear properties of headed studs on the flexural behavior of the composite beams have been inconclusive. In this research, we studied the shear performance influence of headed studs by conducting static push-out tests on seven designed push-out specimens. The flexural behavior of a steel-concrete composite beam connected by studs was discussed in detail by conducting a two-point symmetric monotonic static loading test. Based on the actual situation of the composite beam test, a finite element numerical model was established and validated, in which the elastic connections units were used to simulate the studs, and the force–slip data obtained from the push-out tests were used as the constitutive model of the studs. The effects of the stud diameter, stud height, the number of studs arranged, and concrete strength on the flexural behavior of the composite beams were analyzed and compared. The results showed that the number of studs arranged had a significant influence on the flexural behavior of the composite beams, followed by the strength of the concrete. The specifications of the studs had little effect on the flexural behavior of the composite beams within the study scope using the modeling method in this paper.

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“…Suzuki and Kimura (2019) proposed a component model of a composite beam modeling the stress in actual buildings, which refined the cyclic behavior and stress transfer between the headed stud and concrete slab. Meng et al (2022) proposed an analytical model to describe the shear behavior of headed stud connectors by analyzing the load-slip curves and failure modes in the literature. The equivalent stiffness is analytically determined by a function of the stud diameter, stud length, and parameters reflecting the material properties of the stud and concrete.…”

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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Analytical model for the Load-Slip behavior of headed stud shear connectors

Cited by 18 publications

References 50 publications

A Trilinear Model for the Load–Slip Behavior of Headed Stud Shear Connectors

A Trilinear Model for the Load–Slip Behavior of Headed Stud Shear Connectors

Study on the Flexural Behavior of Steel-Concrete Composite Beams Based on the Shear Performance of Headed Stud Connectors

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

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