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Article

Analytical Model for the Fatigue Analysis of Steel Joints by Clamps According to the Lever Length

1
Department of Construction and Manufacturing Engineering, Universidad Nacional de Educación a Distancia (UNED), C/Juan del Rosal 12, 28040 Madrid, Spain
2
Department of Materials Engineering, Applied Mechanics and Construction, School of Industrial Engineering, University of Vigo, 36208 Vigo, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Adam Grajcar
Materials 2021, 14(24), 7726; https://doi.org/10.3390/ma14247726
Received: 15 November 2021 / Revised: 10 December 2021 / Accepted: 11 December 2021 / Published: 14 December 2021
(This article belongs to the Section Construction and Building Materials)
Among the most commonly used materials in the construction of structures in the last two centuries are iron and steel. Clamp joints are a suitable type of joint when it is necessary to rehabilitate or modify a historical steel structure for new uses, reinforcing or modifying it with new beams, without the need to drill or weld on the original structure. The clamps allow beams to be joined with a flange (such as I-beams) without the need for any prior operation on the beams and allow the manufacture of completely removable and reconfigurable structures. Developing and analysing this type of fully removable and reconfigurable structure is necessary. To date, no studies have been carried out on the fatigue behaviour of steel joints by clamps, especially taking into account their main geometric characteristics, such as the size of the clamp levers. In this work, an analytical model is proposed that allows for the analysis of the number of cycles and the fatigue limit of clamp joints as a function of the size of the clamp levers. In addition, various fatigue tests are performed with different clamp sizes. The experimental results are compared with those obtained with the proposed methodology. Finally, the relationships between the lever length and the fatigue behaviour of the clamp joints have been determined. It is concluded that an increase in the size of the front lever is associated to a decrease in the fatigue limit. On the contrary, if the size of the rear lever is increased, the fatigue limit of the joint increases. In general, according to the obtained results, the resistance of the joint can be reduced to approximately one third when it is subjected to fatigue loads. View Full-Text
Keywords: clamp; new joint; reconfigurable joint; bolt; fatigue; dynamic load; deconstruction clamp; new joint; reconfigurable joint; bolt; fatigue; dynamic load; deconstruction
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MDPI and ACS Style

Cabaleiro, M.; Comesaña, R.; González-Gaya, C.; Caamaño, C. Analytical Model for the Fatigue Analysis of Steel Joints by Clamps According to the Lever Length. Materials 2021, 14, 7726. https://doi.org/10.3390/ma14247726

AMA Style

Cabaleiro M, Comesaña R, González-Gaya C, Caamaño C. Analytical Model for the Fatigue Analysis of Steel Joints by Clamps According to the Lever Length. Materials. 2021; 14(24):7726. https://doi.org/10.3390/ma14247726

Chicago/Turabian Style

Cabaleiro, Manuel, Rafael Comesaña, Cristina González-Gaya, and Carlos Caamaño. 2021. "Analytical Model for the Fatigue Analysis of Steel Joints by Clamps According to the Lever Length" Materials 14, no. 24: 7726. https://doi.org/10.3390/ma14247726

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