Shear performance and dimension rationalization study on the rubber sleeved stud connector in continuous composite girder

Su, Hang; Su, Qingtian; Xu, Chen; Zhang, Xieli; Lei, Dongyang

doi:10.1016/j.engstruct.2021.112371

Cited by 15 publications

(9 citation statements)

References 26 publications

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“…Considering the degree of interaction as 1 when the shear stiffness of the spring element satisfies the full shear connection [9] , the midspan deflections of girders with different degrees of interactions are shown in Fig 1(b). It can be inferred that the deflection drops nearly linearly with the increase of the interaction degree.…”

Section: Calculation Of Deflectionmentioning

confidence: 99%

“…As for composite girders using stud connectors with different shear stiffness, Su [25] conducted numerical analysis on the effect of stud stiffness on girder stress and summarized a seriesous of empirical equations. The numerical analysis considers the whole hogging moment region as PSC region and decrease the shear stiffness of the stud connectors within the area.…”

Section: Calculation Of Stressmentioning

confidence: 99%

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Application of Partial Shear Connection in Steel–Concrete Semi-Continuous Composite Girder Bridges

Casas

et al. 2022

Structural Engineering International

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In the hogging moment regions of steel-concrete composite continuous girder bridges, detrimental condition appears that concrete slab bears tensile stress and steel girder bears compressive stress. Decreasing the shear connection in the hogging moment regions helps to improve the mechanical performance for steel-concrete continuous composite girder bridges. In this paper, analytical models for the calculation of composite girder considering PSC action are discussed. A project case of Qiwu bridge in Jiangxi Province using partial shear connection action was introduced. Nonlinear finite element model of Qiwu Bridge was established through ABAQUS to simulate and predict the mechanical properties and structural performance. Based on the FEM results, the influence of partial shear connection on various parameters were analysed by performing a parametric analysis. Numerical results showed that arranging partial shear connection region can effectively reduce the crack region and disperse the area with high stress concentration, but the shear stiffness mutation can magnificently increase the stress level at the edge of the partial shear connection region.

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Section: Calculation Of Deflectionmentioning

confidence: 99%

Section: Calculation Of Stressmentioning

confidence: 99%

Application of Partial Shear Connection in Steel–Concrete Semi-Continuous Composite Girder Bridges

Casas

et al. 2022

Structural Engineering International

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“…The analysis of steel-to-concrete connections refers not only to hybrid beams but also to classical and non-standard composite beams. Su revealed the influence of the steelconcrete interaction on the overall mechanical performance of composite girders [22][23][24]. Tesser presented 24 lab tests on composite steel trusses and concrete beams with an inferior precast concrete base [25], while the main features of the composite steel trusses and concrete beams are quantitatively and qualitatively discussed.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Testing of a Composite Steel–Concrete Joint for Hybrid Girder Bridges

Shangguan

Casas

et al. 2023

Materials

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A hybrid girder bridge adopts a steel segment at the mid-span of the main span of a continuous concrete girder bridge. The critical point of the hybrid solution is the transition zone, connecting the steel and concrete segments of the beam. Although many girder tests revealing the structural behavior of hybrid girders have been conducted by previous studies, few specimens took the full section of a steel–concrete joint due to the large size of prototype hybrid bridges. In this study, a static load test on a composite segment to bridge the joint between the concrete and steel parts of a hybrid bridge with full section was conducted. A finite element model replicating the tested specimen results was established through Abaqus, while parametric studies were also conducted. The test and numerical results revealed that the concrete filling in the composite solution prevented the steel flange from extensive buckling, which significantly improved the load-carrying capacity of the steel–concrete joint. Meanwhile, strengthening the interaction between the steel and concrete helps to prevent the interlayer slip and simultaneously contributes to a higher flexural stiffness. These results are an important basis for establishing a rational design scheme for the steel–concrete joint of hybrid girder bridges.

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“…Furthermore, Zhuang et al (2018Zhuang et al ( , 2019Zhuang et al ( , 2020 and Xu et al (2020; investigated the shear mechanism and fatigue performance of rubber-sleeved studs (RSS). Besides, the effects of rubber sleeve height, thickness, stud length, and stud diameter on the shear resistance of rubber-sleeved studs was studied by Xu et al (2016) and Su et al (2021). Cao (2017) analysed the effect of connector's shear stiffness on the static performance and deflection of continuous composite girders through linear elastic FE model.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Mechanical Behavior of Prestressed Continuous Composite I-Girder Bridges with Partial Connection

Tang

et al. 2023

J. Bridge Eng.

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In the prestressed composite girder bridges, the shear connectors will transfer a portion of prestress to the steel girders.However, more prestress is preferred to be remained in the concrete slab to improve its anti-cracking behavior and serviceability performance. A Partial Connection-Prestressing (PCP) method is proposed in this paper to decrease the prestress transferred to steel girders. The partial connection is achieved by applying Rubber-Sleeved Studs (RSS) in the prestressed concrete slab in the negative moment region. Since there is no experimental research regarding PCP method in continuous composite girders, two continuous girders specimens were tested under four-point static load to evaluate their mechanical performance. The test results showed that without decreasing ultimate strength and overall stiffness of the steel-concrete composite girders, the PCP method enhanced the cracking load by 3.1 times. Besides, only 12.5% of the prestressing force was transferred into the steel girder at the internal support section with PCP method, while that in girder without PCP reached 25.9%. Thereafter, to elucidate the partial interaction effect and prestress effect on continuous girders' mechanical behavior, numerical models were developed and calibrated with the test results. It was revealed in the numerical analysis that compared with normal composite girder, applying RSS or prestress alone can improve the cracking load respectively by 11.8% and 157.0 %, while the figure increases to 234.3% when applying RSS and prestressing at the same time. The results indicate that applying RSS in the negative moment region can effectively increase the prestressing efficiency in the concrete slab as well as enhance the bridge serviceability and durability.

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Shear performance and dimension rationalization study on the rubber sleeved stud connector in continuous composite girder

Cited by 15 publications

References 26 publications

Application of Partial Shear Connection in Steel–Concrete Semi-Continuous Composite Girder Bridges

Application of Partial Shear Connection in Steel–Concrete Semi-Continuous Composite Girder Bridges

Modeling and Testing of a Composite Steel–Concrete Joint for Hybrid Girder Bridges

Experimental and Numerical Study on the Mechanical Behavior of Prestressed Continuous Composite I-Girder Bridges with Partial Connection

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