Abstract
The concept of steel sheet glass fiber reinforced polymer (GFRP) composite bar (SSGCB) was put forward. An optimization plan was proposed in the combined form of SSGCB. The composite principle, material selection, and SSGCB preparation technology have been described in detail. Three-dimensional finite element analysis was adopted to perform the combination form optimization of different steel core structures and different steel core contents based on the mechanical properties. Mechanical tests such as uniaxial tensile, shear, and compressive tests were carried out on SSGCB. Parametric analysis was conducted to investigate the influence of steel content on the mechanical properties of SSGCB. The results revealed that the elastic modulus of SSGCB had improvements and increased with the rise of steel content. Shear strength was also increased with the addition of steel content. Furthermore, the yield state of SSGCB was similar to the steel bar, both of which indicated a multi-stage yield phenomenon. The compressive strength of SSGCB was lower than that of GFRP bars and increased with the increase of the steel core content. Stress-strain curves of SSGCB demonstrated that the nonlinear-stage characteristics of SSGCB-8 were much more obvious than other bars.
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Acknowledgements
The authors may wish to express their sincere appreciation for the financial support provided by the National Key Research and Development Program of China (No. 2017YFC0806008), Science and Technology Project of Department of Transportation of Hubei Province (No. 2018-422-1-2), National Natural Science Foundation of China (Grant No. 51178361), Major Project of Technological Innovation of Hubei Province (No. 2018AAA031), China Scholarship Council (No. 201906950026), and the Fundamental Research Funds for the Central Universities (No. 2019-YB-015) for this work.
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Wu, C., He, X., He, L. et al. Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber reinforced polymer composite bar. Front. Struct. Civ. Eng. 15, 834–850 (2021). https://doi.org/10.1007/s11709-021-0743-7
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DOI: https://doi.org/10.1007/s11709-021-0743-7