Experimental Research on PBL Connectors Considering the Effects of Concrete Stress State and Other Connection Parameters

Wang, Xuewei; Zhu, Bing; Cui, Shengai; Lui, Eric M.

doi:10.1061/(asce)be.1943-5592.0001158

Cited by 27 publications

(14 citation statements)

References 17 publications

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“…Wang et al analyzed the effect of concrete stress state; it was found that the shear capacity of the connectors increased when a transverse compressive stress was present, but it decreased when a transverse tensile stress was present. Using the results from these tests, a design equation that takes all of these factors into consideration in determining the shear capacity of Perfobond shear connectors is proposed [23].…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental Study of Perfobond Rib Shear Connector under Lateral Force

Wang

Zhi-wen

et al. 2021

Applied Sciences

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A series of full-scale pushed out tests were performed on the Perfobond rib shear connector. The tests were designed to examine the performance of the Perfobond rib shear connector under different rib hole sizes and shapes, reinforcing bar sizes, rib thicknesses, as well as the presence of lateral forces. It has been revealed from the test results that the rib hole size and reinforcement diameter may not act independently, and the influence of one’s size is actually dependent on the size of the other one. The lateral forces also affect the performance of the shear connector; for example, the capacity of the shear connector would be larger under compression than under tension. The existence of transverse pretension stress accelerated the cracking of concrete, leading to the strength and stiffness of concrete, perforated plate, and reinforcing rebars unable to fully exert their effect. In addition, the constraint effect of transverse stress improved the strength and stiffness of concrete and delayed the concrete cracking, bringing the strength and stiffness of concrete, perforated plate, and reinforcing rebars into full play, and resulting in a significant improvement in the shear capacity of Perfobond rib shear connectors.

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Section: Literature Reviewmentioning

confidence: 99%

Experimental Study of Perfobond Rib Shear Connector under Lateral Force

Wang

Zhi-wen

et al. 2021

Applied Sciences

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“…In order to further improve the connection performance between steel and concrete, the PBL shear bond is proposed by scholars. It is found that increasing the opening area and the thickness of the steel plate can improve the bearing capacity and ductility of the members [16][17][18][19]; setting flanges can significantly improve the bearing capacity of shear keys and increase the constraint range of concrete slabs [20][21][22]; inserting steel bars at the opening can improve the bearing capacity of shear keys, and the deformation capacity is also significantly improved [23][24][25]. Under external pressure, the shear capacity increased slightly [26].…”

Section: Introductionmentioning

confidence: 99%

Push-Out Test and Hysteretic Performance Study of Semi-Rigid Shear Keys with the Triple-Folded Web of Flange

et al. 2022

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The PBL (Perfobond Leiste) shear connector has the advantages of high bearing capacity and strong constraint ability; however, the traditional PBL shear connector has strong and weak axis problems, and its stiffness is large, resulting in weak deformation ability. To this end, this paper proposes a new type of flange triple-web shear key and obtains the new shear key’s mechanical properties and failure mechanism through the push-out test. The results show that the failure mode of the new shear key is the deformation of the steel plate on the web and the edge of the opening, which has a high bearing capacity, outstanding deformation ability, and good integrity with concrete, showing obvious semi-rigid characteristics. Through numerical analysis, the effects of flange width, web height, and steel plate thickness on the mechanical properties of shear keys are obtained. Based on the fitting analysis method, the calculation formula of shear key bearing capacity is proposed. Finally, the horizontal seismic performance of the shear key is numerically simulated. It is found that the hysteretic curve of the shear key is full and shows good energy dissipation capacity.

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“…The experimental studies on the mechanical properties of PBL connectors are mostly focused on the specimens adopting conventional concrete or UHPC [ 25 , 26 ], while there are few experimental investigations on PBL connectors with SFHSC with low strength, resulting in a lack of understanding for the performance of such connectors. Moreover, most of the existing formulas for calculating the shear capacity of PBL connectors do not adequately consider the contributions of concrete dowels, penetrating rebars, concrete end-bearing and interface bond between the perforated steel plates and concrete [ 27 , 28 ]. For those few formulas that do consider the shear contributions of the four components, they were obtained from regression analysis based on experimental data of PBL connectors with conventional concrete [ 29 ] and cannot account for the shear capacity enhancement effect of steel fibers.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Mechanical Properties of Perfobond Rib Shear Connectors with Steel Fiber High Strength Concrete

Liu

Xue

et al. 2021

Materials

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Perfobond rib (PBL) shear connectors, made up of the perforated steel plates with the penetrating rebars passing through the holes, are extensively adopted in steel-concrete composite structures for their excellent performance. The adequate understanding of mechanical properties for PBL connectors is of great significance for their reasonable design. In this study, a push out experiment, including 12 specimens with the parameters of concrete strength, diameter of penetrating rebars and the number of holes on perforated steel plate, was performed to explore the mechanical behavior of PBL connectors with steel fiber high strength concrete (SFHSC). The experimental results showed that the shear capacity of the PBL connectors increased with the increase in concrete strength, diameter of the penetrating rebars and the number of holes. Furthermore, a general prediction formula for the shear capacity of PBL connectors was developed, which considers the shear contribution of concrete dowels, concrete end-bearing, interfacial bonding between the perforated steel plates and concrete and the penetrating rebars as well as the enhancement effect of steel fibers. The prediction results of the equation are in good agreement with the experimental data and could provide a reference for the design of PBL connectors.

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Experimental Research on PBL Connectors Considering the Effects of Concrete Stress State and Other Connection Parameters

Cited by 27 publications

References 17 publications

Experimental Study of Perfobond Rib Shear Connector under Lateral Force

Experimental Study of Perfobond Rib Shear Connector under Lateral Force

Push-Out Test and Hysteretic Performance Study of Semi-Rigid Shear Keys with the Triple-Folded Web of Flange

Experimental Study on the Mechanical Properties of Perfobond Rib Shear Connectors with Steel Fiber High Strength Concrete

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