Analytical and numerical study of the shear stiffness of rubber-sleeved stud

Xu, Xiaoqing; Liu, Yuqing

doi:10.1016/j.jcsr.2016.04.020

Cited by 30 publications

(21 citation statements)

References 13 publications

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“…C3D8R was used to simulate the concrete, studs, and steel plate, while T3D2 was selected to simulate the rebar embedded in the UHPC slab. The general contact algorithm was used to define the normal behavior and tangential behavior, and the friction coefficient of 0.4 was set for surface between the stud and UHPC slab according to Xu and Liu (2016). The friction force between the steel beam and UHPC slab was not taken into account in this study.…”

Section: Numerical Analysismentioning

confidence: 99%

Shear behavior of large stud shear connectors embedded in ultra-high-performance concrete

Yin

Ding

et al. 2020

Advances in Structural Engineering

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In this article, the static shear behavior of large-headed studs embedded in ultra-high-performance concrete was investigated by push-out test and numerical analysis. A total of nine push-out specimens with single and grouped studs embedded in ultra-high-performance concrete and normal strength concrete slabs were tested. In the testing process, only shank failure appeared without cracks occurring on the surface of ultra-high-performance concrete slab when the steel–ultra-high-performance concrete specimens reached ultimate shear capacity. The shear capacity of specimens with large studs embedded in ultra-high-performance concrete slab increased by 10.6% compared those in normal concrete, and the current design codes such as Eurocode4, AASHTO LFRD 2014, and GB50017-2003 all underestimate the shear capacity of such kind of steel–ultra-high-performance concrete composite structures according to experimental results. Numerical models were established using ABAQUS with introducing damage plasticity material model. The influence of stud diameter, concrete strength, thickness of clear cover, and spacing of studs on the static shear behavior was thoroughly investigated via parametric analysis. Based on the experimental and numerical analysis, the existence of wedge block and the decrease of axis force are beneficial for improving the shear capacity of stud shear connectors.

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Section: Numerical Analysismentioning

confidence: 99%

Shear behavior of large stud shear connectors embedded in ultra-high-performance concrete

Yin

Ding

et al. 2020

Advances in Structural Engineering

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“…This axial fore is resisted by the friction force along the stud and the horizontal reaction in the head of the stud. As a result, as shown in Figure 1, studs are subjected to bending moment, axial force, and shear force at the same time in the push-out tests (Xu and Liu, 2016).…”

Section: Behavior Of Headed Studs In Push-out Testsmentioning

confidence: 99%

“…At this stage, concrete and steel can be taken as elastic material. The headed stud can be analogous to a beam on an elastic foundation based on the shear mechanism of headed stud as shown in Figure 3 (Lin et al, 2014; Xu and Liu, 2016; Xue et al, 2008). If the concrete around the stud was taken as uniform material on average, the shear stiffness of headed stud can be given as follows (Lin et al, 2014; Xu and Liu, 2016)…”

Section: Behavior Of Headed Studs In Push-out Testsmentioning

confidence: 99%

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

Liu

2019

Advances in Structural Engineering

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The deformation behavior of headed studs is an important issue in the design of steel and concrete composite structures. In recent years, there is a rapid increase in the application of headed stud shear connectors in new types of concrete such as crumb rubber concrete and ultrahigh-performance concrete. In this article, totally 154 monotonic push-out tests from the literature on experiments of headed stud in various types of concrete were gathered and evaluated with the aim to study the deformation behavior of headed studs. As a result of a careful analysis on the effects of stud diameter and concrete properties on the shear stiffness of studs through the historic database, a new equation for shear stiffness was proposed. The new formula is a reasonably good predictor and is suitable for studs with a diameter ranging from 10 to 30 mm in the concrete with cylinder compressive strength ranging from 22.0 to 200.0 MPa. New formula for the load-slip curve of headed stud which includes a parameter related to the shear stiffness was also proposed. It can give good prediction for the slip not only at low load level but also large load level.

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“…It is convenient to control the contact area between steel and concrete by using rubber. Based on this concept, Xu [8,9] put forward a headed stud with rubber sleeves, which could provide lower shear stiffness for headed stud connectors. Subsequently, Liu [10] proposed a rubber ring that can be easily installed on conventional PBLs and conducted modified push-out tests and refined FE analyses to evaluate the shear behavior of the rubber ring perfobond connector (RPBL).…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Shear Performance of a New Perfobond Connector with Controllable Stiffness

Liu

Xin

et al. 2020

Advances in Materials Science and Engineering

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To improve the shear behavior and design applicability of rubber ring perfobond connectors (RPBLs), a new rubber ring that aims to make the shear stiffness of RPBLs controllable was proposed. Firstly, the conceptual design and configuration of the new rubber rings were presented and discussed. Subsequently, finite element (FE) models for modified push-out tests of new RPBLs were established based on the validated modeling method. The initial shear stiffness is dominated by the horizontal projected contact area between hole walls and concrete dowels. γ is defined as the ratio of the horizontal projected length of hollows to the diameter of holes. The shear stiffness of new RPBLs is about 35%, 60%, and 82% of the shear stiffness of PBLs when γ equals 0.25, 0.5, and 0.75, respectively. Employing the new rubber rings with varying central angles on conventional PBLs is feasible to obtain the required stiffness for RPBLs. Further, the effects of the number of sectors, the size of side wings, the central angle of hollows, the offset angle, and the thickness of rubber rings were analysed. Based on the numerical results, the proper thickness of side wings is no larger than 2 mm. The thicker side wing could reduce the confinement effects provided by surrounding concrete on concrete dowels, resulting in a drop of the yield load of new RPBLs. The number of sectors is suggested to be no less than 6 so that the shear behavior of new RPBLs is irrelevant to the offset angle. Besides, the shear stiffness is not related to the thickness of rubber rings. To improve the yield load of RPBLs and obtain the moderate recovered stiffness, the thickness of rubber rings is recommended as 2 mm. Finally, the expression for the shear stiffness of new RPBLs was proposed.

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Analytical and numerical study of the shear stiffness of rubber-sleeved stud

Cited by 30 publications

References 13 publications

Shear behavior of large stud shear connectors embedded in ultra-high-performance concrete

Shear behavior of large stud shear connectors embedded in ultra-high-performance concrete

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

Numerical Study on Shear Performance of a New Perfobond Connector with Controllable Stiffness

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