Investigation of fatigue phenomena and stress variations by using FRP dowel bars

Document Type : Original Article

Authors

1 Assistant professor, Faculty of Engineering, Payame Noor University, Tehran, Iran

2 MSc, Payame Noor University, Tehran, Iran

Abstract

The behavior of concrete pavements is affected by the performance and the ability to transmit force through their joints and joints. The efficiency and useful life of these structures are directly dependent on the transmission forces. Therefore, the analysis of the performance of joints and joints of pavements has an important role in this case, which itself depends on the use of appropriate behavioral models to simulate the mechanism of force transfer. In this study, the main purpose is comparing the stress changes in FRP dowels with steel dowels under fatigue analysis. for this purpose, nine models including three different diameters of 16, 25 and 38 mm in three materials contains; steel, carbon composite (CFRP) and glass composite (GFRP) were simulated and analyzed in ANSYS software. The analysis used in the models is the Fatigue analysis performed at ANSYS-WORKBENCH. The analysis outputs including stress variations and fatigue parameters including LIFE and DAMAGE were extracted in all models. The results showed that in all the diameters studied, the stress value was the lowest in the models with CFRP dowels, followed by the models with GFRP dowels and the highest stress was related to steel bars. In other words, CFRP dowels performed better in load transfer and resulted in less fracture stresses in the model.

Keywords

Main Subjects

References

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History

  • Receive Date: 20 December 2020
  • Revise Date: 26 February 2021
  • Accept Date: 15 April 2021

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