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Published: Građevinar 73 (2021) 5
Paper type: Original scientific paper
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Experimental investigation of preload losses in high strength bolts under cyclic loading

Nenad Fric, Milan Veljković, Zoran Mišković, Dragan Buđevac

Abstract

Slip-resistant shear connections with preloaded bolts have traditionally been used in steel structures exposed to cyclic / fatigue loading or in cases when bolt slipping or connection deformations should be restricted. Hence, shear load is transferred through friction surfaces rather than through contact between the bolt surface and the hole. The main influencing parameters determining slip resistance of the connection are the friction between contact surfaces and the bolt preload level. This paper presents an experimental study of preloaded bolted connections under cyclic load, the main objective being to investigate the influence of cyclic load on the losses of preload force in high strength bolts and lock bolts.

Keywords
high strength bolt, preload force, preload loss, slip factor, cyclic load

HOW TO CITE THIS ARTICLE:

Fric, N., Veljković, M., Mišković, Z., Buđevac, D.: Experimental investigation of preload losses in high strength bolts under cyclic loading, GRAĐEVINAR, 73 (2021) 5, pp. 453-468, doi: https://doi.org/10.14256/JCE.3157.2021

OR:

Fric, N., Veljković, M., Mišković, Z., Buđevac, D. (2021). Experimental investigation of preload losses in high strength bolts under cyclic loading, GRAĐEVINAR, 73 (5), 453-468, doi: https://doi.org/10.14256/JCE.3157.2021

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This paper is licensed under a Creative Commons Attribution 4.0 International License.
Authors:
NF Portret
Nenad Fric
University of Belgrade
Faculty of Civil Engineering
Milan Veljkovic WEB
Milan Veljković
Delft University of Technology
Faculty of Civil Engineering and Geosciences
ZMiskovic photo3
Zoran Mišković
University of Belgrade
Faculty of Civil Engineering
Budjevac
Dragan Buđevac
University of Belgrad,
Faculty of Civil Engineering