Experimental and Numerical Evaluation on the Performance of Perfobond Leiste Shear Connectors in Steel–SFRCC Composite Beams

Peng, Kai; Liu, Laijun; Wu, Fangwen; Lei, Song; Cao, Jincheng; Fan, Xiangyan; Wang, Xuan

doi:10.3390/ma15207237

Cited by 3 publications

(1 citation statement)

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“…Through the combination of push-out tests and numerical simulation, it was found that steel fiber can prevent the development of concrete cracks. At the same time, according to the test results, it was found that the pore size, thickness and yield strength of the steel plate have a great influence on the shear capacity of the PBL connector [ 35 ]. Zheng et al proposed a long-hole-type PBL connector and a slotted-type PBL connector while considering the hole’s structure to improve the shear-bearing capacity of the connector and facilitate construction.…”

Section: Introductionmentioning

confidence: 99%

Study on Shear Resistance Property of a New PBL Connector with Steel–Rubber Tenon

Huang

et al. 2023

Materials

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In order to improve the shear resistance and structural ductility of the perfobond rib (PBL) connector, a new PBL connector with steel–rubber tenon is proposed in this study, which aims to increase the shear load capacity of the connector while improving the ductility of the connector. First, models of new PBLs are established based on the validated finite element method, and their mechanical properties are compared with other shear connectors. The results show that the stiffness and shear load capacity of the proposed connector can be effectively improved when the steel ring is added, where the shear stiffness can be reduced, and the deformation capacity of the specimen can be improved when the rubber ring is added. When a steel ring with a thickness of 5 mm and a rubber ring with a thickness of 5 mm are involved, the shear load capacity of the connector with steel–rubber tenon is increased by 13.7%, and the shear stiffness is reduced by 37.3% compared to the conventional concrete tenon connector, while the ductility is increased by 75.1% compared to the connector with steel ring tenon. Subsequently, as for the connectors with steel–rubber tenon, the effects of the thickness of the steel ring, the thickness of the rubber ring, the diameter of perforated rebar, the strength of concrete and the strength of perforated steel plate are analyzed based on the finite element model of a PBL. The results show that an increase in the thickness of the steel ring, the diameter of the perforated rebar and the strength of the concrete will cause an increase in the shear stiffness and shear load capacity of the connector; however, an increase in the thickness of the rubber ring can cause a decrease in the shear stiffness and shear load capacity of the connector, while a change in the strength of perforated steel plate has little effect on the shear stiffness and shear load-carrying capacity. Finally, based on the finite element parametric analysis results and the damage mechanism of the proposed connector, a calculation equation applicable to the PBL connector with steel–rubber tenon is presented to predict the shear load capacity of the connector.

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Section: Introductionmentioning

confidence: 99%