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Fatigue Behavior of Shear Connectors in Steel-Concrete Beams with Partial Interaction

Credit to Download: 1 | Page Numbers 24 | Abstract Views: 94
Year: 2018
COI code: ISSS09_070
Paper Language: English

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Authors Fatigue Behavior of Shear Connectors in Steel-Concrete Beams with Partial Interaction

  Amir Reza Ghiami Azad1 - Assistant Professor, School of Civil Engineering, College of Engineering, University of Tehran
  Mohammad Saeed Mafipour - MSc Student, School of Civil Engineering, College of Engineering, University of Tehran
  Sepehr Tatlari - MSc Student, School of Civil Engineering, College of Engineering, University of Tehran

Abstract:

Fatigue is one of the main limit states in the design of bridges. Because bridges are subject to cyclic loads such as vehicle traffic and because the ratio of dead to live load is relatively low in these structures, bridges have a high sensitivity to fatigue failure. Regardless of the type of materials used in the bridge, fatigue failures are brittle and can occur in stress levels much lower than the yield stress. More specifically, fatigue failure of shear connectors leads to a significant reduction in stiffness of beams and ductility as well as a significant increase in deflection and finally bridge failure. There has been a lot of research conducted on the fatigue behavior of shear connectors in fully-composite beams. However, there is little research and data on how shear connectors perform in partially-composite beams fatigue-wise. The application of partially-composite beams in bridges has recently increased because the shear connectors are no longer distributed evenly along the beam but rather, they are installed and concentrated wherever they are needed. In this paper, the methods of evaluating fatigue life of shear connectors in fully-composite beams are investigated, and these methods are extended to partially-composite beams based on the available experimental data and partial-interaction theory. The results of this study show that checking fatigue based on slip range or strain range instead of the conventional stress range approach lead to more accurate equations with better correlation and smaller error.

Keywords:

Fatigue, Bridge, Strengthening, Steel, Shear Connector

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COI code: ISSS09_070

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Ghiami Azad1, Amir Reza; Mohammad Saeed Mafipour & Sepehr Tatlari, 2018, Fatigue Behavior of Shear Connectors in Steel-Concrete Beams with Partial Interaction, 9th Conference of Steel and Structures, تهران, انجمن سازه هاي فولادي ايران, https://www.civilica.com/Paper-ISSS09-ISSS09_070.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Ghiami Azad1, Amir Reza; Mohammad Saeed Mafipour & Sepehr Tatlari, 2018)
Second and more: (Ghiami Azad1; Mafipour & Tatlari, 2018)
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Type: state university
Paper No.: 54867
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