Affiliation:
1. College of Civil Engineering, Southwest Forestry University, Kunming 650224, China
Abstract
In order to study the influence of steel fibers on the mechanical properties of Perfobond Leiste (PBL) shear connectors and improve the utilization of steel fibers in this structure, four push-out test specimens and eight finite element numerical models were produced to study PBL-type shear connector specimens with different steel fiber blending amounts and blending forms. The results show that in this structure, when the blending amount of steel fiber was 0.5% to 1.5%, the ultimate bearing capacity of the specimen improved linearly, and the steel fiber helped to give full play to the performance of the PBL shear connector. The steel fibers distributed in the Z-direction have a significant impact on the mechanical properties of the PBL shear connector, and the steel fibers distributed in this direction have a significant effect on increasing the ultimate bearing capacity of the specimen. Steel fibers distributed in the Y-direction can greatly improve the plasticity of concrete. In addition, the effective action area of steel fibers is the triangular area from the bottom of the PBL shear connector to the two tops of the concrete.
Funder
Scientific Research Fund of Yunnan Provincial Education Department
Subject
General Materials Science
Reference33 articles.
1. Effect of reinforcement on the strength of the web opening in steel-concrete composite beam;Du;Eng. Struct.,2021
2. Behavior of steel I-beam embedded in normal and steel fiber reinforced concrete incorporating demountable bolted connectors;Hamoda;Compos. B Eng.,2019
3. Wu, F., Liu, S., Xue, C., Yang, K., Feng, Y., and Zhang, H. (2021). Experimental study on the mechanical properties of perfobond rib shear connectors with steel fiber high strength concrete. Materials, 14.
4. Analysis on shear-capacity of PBL shear connectors based on finite element analysis method;Zhou;Highway,2022
5. Ollgaard, J.G. (1971). Shear strength of stud connectors in lightweight and normal weight concrete. AISC Eng. J., 71–10.