Shear behavior of perfobond connectors in the steel-concrete joints of hybrid bridges

Zou, Yang; Di, Jin; Zhou, Jianting; Zhang, Zhongya; Li, Xiujun; Zhang, Hong; Qin, Fengjiang

doi:10.1016/j.jcsr.2020.106217

Cited by 18 publications

(6 citation statements)

References 24 publications

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“…According to the B-SC-r20-h120 FE model, the complete failure process of the B-SCs was analysed as follows. The load-slip curve for specimen B-SC-r20-h120 is shown in Figure 14 , on which five typical points are marked, with points I and II representing the elastic stage and points III and IV representing the elastic–plastic stage, and point V representing the ultimate state [ 42 ]. Figure 15 presents the deformation of the concrete slab and the stress of the shear plate at these five key points, which illustrates the complete failure process of the push-out specimens in detail.…”

Section: Verification Of the Numerical Modelmentioning

confidence: 99%

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Shear Behaviour and Calculation Methods of Bearing-Shear Connectors for Prefabricated Steel–Concrete Composite Beams

et al. 2023

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The bearing-shear connector (B-SC) is a newly developed connector that exhibits excellent shear behaviour and is easy to process. However, research on the application of B-SCs as substitutes for grouped studs in prefabricated steel–concrete composite beams is rare, and systematically studying their shear behaviour is necessary. Thus, a refined numerical model was developed to study the shear behaviour of the B-SCs. The numerical model, validated by push-out tests, was conducted to analyse the stress of the B-SCs and concrete slab during loading and to explore the failure mechanism of B-SCs. Then, a parametric study was performed to identify the key factors influencing the shear behaviour of the B-SCs. The concrete strength, and the thickness and the tensile strength of the shear plate were found to significantly influence the shear behaviour of B-SCs. According to the experiments and numerical analysis, calculation formulae for the ultimate shear resistance and slip modulus were proposed.

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Section: Verification Of the Numerical Modelmentioning

confidence: 99%

“…The confinement of stirrup to concrete slabs has been demonstrated to significantly affect the behaviour of shear connectors [ 42 , 47 ]. Figure 21 presents the effect of the stirrup diameter on the shear behaviour of the B-SCs and a comparison between the ultimate shear resistance and slip modulus is summarised in Table 3 .…”

Section: Parametric Studymentioning

confidence: 99%

Shear Behaviour and Calculation Methods of Bearing-Shear Connectors for Prefabricated Steel–Concrete Composite Beams

et al. 2023

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“…They proposed a formula for calculating the shear capacity of the encased perfo-bond connector. Zou et al [20] developed a finite element model for push-out tests on perfo-bond connectors in the steel-concrete joints in hybrid bridges and studied the shear performance and force transmission mechanism of perfo-bond connectors. Based on numerical simulation and theoretical methods, Zou et al [21] further delved into the mechanical behavior of perfo-bond connectors at the joint and gave a simplified calculation method for determining the maximum slip, effective utilization rate, and load ratio.…”

Section: Introductionmentioning

confidence: 99%

Study on Structural Parameter Sensitivity and the Force Transmission Mechanism of Steel–Concrete Joints in Hybrid Beam Bridges

Jia,

Yuan,

et al. 2024

Buildings

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In this study, a refined model of the Shanghai Damaogang Bridge’s (hybrid beam type) box deck joints is established. The correctness of the model is verified by construction monitoring. For the front and back bearing plates, the force performance of the joint members under the most unfavorable loads is investigated, and the force transmission mechanism is analyzed. The influence of the bearing plate thickness and the joints’ stiffness on the stress distribution of the joint members, the internal force of the joints, and the force-transfer efficiency is investigated by the method of controlling variables, and the optimal structural parameters of the nodes are also studied. The results show that, within the proximity of the back bearing plate, the thickness of the back bearing plate affects stress distribution in the joint. The increased stiffness of the welding studs makes the range of shear force along the bridge direction of the top and bottom welding studs larger, and the longitudinal distribution of welding stud shear force is more uneven. The concrete structure bears a higher proportion of the internal force in the joint compared to the steel structure.

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“…The PBL connector was formed by perforated steel plate welding on the flan the transverse rebar penetrating through the perforated steel plate [17,18]. Ogueji al.…”

Section: Introductionmentioning

confidence: 99%

Shear Behavior and Design of Innovative Stud-Reinforced Embedded Shear Connectors with Flanges

Zhang,

Jin,

Deng

et al. 2024

Buildings

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The embedded shear connector with flanges (ESCF) exhibits excellent shear performance in the steel–concrete composite beam. The ESCF consists of embedded corrugated steel web as the shear connector and shape-matched flanges for construction convenience. However, previous research showed that the steel flange of the ESCF was prone to local buckling when subjected to shear force, resulting in insufficient shear strength of the connector. In this paper, head studs were adopted to reinforce the ESCF at the flange with a large width-to-thickness ratio. Nine stud-reinforced embedded shear connectors with flanges (SR-ESCF) were manufactured to conduct the push-out test to investigate the shear performance of SR-ESCF. The effects of the reinforcing studs, thickness of the web, width-to-thickness ratio of the flange, embedding depth of the web, and diameter of the combined rebar on shear strength of the SR-ESCF were revealed and discussed thoroughly. The push-out test results showed that the head studs significantly improved the initial stiffness and load-bearing capacity of the ESCF, which were increased by 17% and 15%, respectively. Moreover, the head studs prevented local buckling of the steel flange. The shear strength of the specimens was greatly influenced by the embedding depth of the web, the width-to-thickness ratio of the flange as well as the reinforcing studs. However, the diameter of the combined rebar and thickness of the web had negligible effects on the shear capacity of the SR-ESCF. According to the test results, the nonlinear finite element model (FEM) and the shear capacity of SR-ESCF prediction formula were created and verified. Furthermore, the layout of the reinforcing studs welded on the flange of the SR-ESCF was optimized by the validated FEM, which indicated that the shear-bearing capacity of the SR-ESCF could be significantly increased by adding studs on the steel flange near the original studs. This research will be of great significance to the design and implementation of the steel–concrete composite beam bridge with corrugated steel web.

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Shear behavior of perfobond connectors in the steel-concrete joints of hybrid bridges

Cited by 18 publications

References 24 publications

Shear Behaviour and Calculation Methods of Bearing-Shear Connectors for Prefabricated Steel–Concrete Composite Beams

Shear Behaviour and Calculation Methods of Bearing-Shear Connectors for Prefabricated Steel–Concrete Composite Beams

Study on Structural Parameter Sensitivity and the Force Transmission Mechanism of Steel–Concrete Joints in Hybrid Beam Bridges

Shear Behavior and Design of Innovative Stud-Reinforced Embedded Shear Connectors with Flanges

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