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http://hdl.handle.net/10397/95723
Title: | Stainless steel ring strengthened removable dowel bar connection system : effect of key parameters and design recommendations | Authors: | Guo, J Chan, TM |
Issue Date: | Oct-2022 | Source: | Structures, Oct. 2022, v. 44, p. 1767-1782 | Abstract: | This paper numerically studies key parameters which affect the structural performance of the stainless steel ring strengthened removable dowel bar connection system. Finite element models were firstly validated against experimental test results in terms of the failure mode and load–deflection relationship. Then validated models were used to carry out the parametric investigation. The dowel bar diameter, the stainless steel ring length as well as the stainless steel ring thickness were studied with 90 generated models. According to the finite element analysis results, it was found that the vertical stiffness and ultimate load were enhanced with the increase of the dowel bar diameter. And the application of the stainless steel ring significantly relieved the compressive stress concentration at joint surface due to the expanded contact area. Close relationships were then observed between the ultimate load and the stainless steel ring thickness and length, respectively. Empirical equations were also derived to predict the ultimate load under the ultimate limit state (ULS). Meanwhile, under 20 kN service limit state (SLS), a close relationship was also found between the maximum compressive stress of concrete and the external diameter of the stainless steel ring. Through this two-stage design, the stainless steel ring strengthened removable dowel bar connection system will be more durable and reliable. | Keywords: | Design recommendations Dowel bar diameter Removable dowel bar connection system Stainless steel ring length Stainless steel ring thickness |
Publisher: | Elsevier | Journal: | Structures | ISSN: | 2352-0124 | DOI: | 10.1016/j.istruc.2022.08.097 | Rights: | © 2022 Institution of Structural Engineers. Published by Elsevier Ltd. All rights reserved. © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The following publication Guo, J., & Chan, T.-M. (2022). Stainless steel ring strengthened removable dowel bar connection system: Effect of key parameters and design recommendations. Structures, 44, 1767-1782 is available at https://dx.doi.org/10.1016/j.istruc.2022.08.097. |
Appears in Collections: | Journal/Magazine Article |
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Guo_Stainless_Steel_Strengthened.pdf | Pre-Published version | 3.99 MB | Adobe PDF | View/Open |
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