Numerical parametric evaluation of ultimate resistance of high-strength bolts

Numerical parametric evaluation of ultimate resistance of high-strength bolts

Li, Jie (Xi’an Jiaotong University)
Xin, Haohui (Xi’an Jiaotong University)
Wang, Zhiqiang (Shaanxi Construction Engineering Holdings Group Co., Ltd.)
Veljkovic, M. (TU Delft Steel & Composite Structures)
Bingzhen, Zhao (Shaanxi Construction Engineering Holdings Group Co., Ltd.)
Zhao, Junjie (Shaanxi Construction Engineering Holdings Group Co., Ltd.)
Correia, José A.F.O. (Universidade do Porto)

2023

High strength bolts are widely used in the engineering field due to their good compressive properties. Accurate assessment of the ultimate capacity performance of high strength bolts under combined loading is essential to ensure the safety of steel structures in the connection zone. Existing studies are not sufficiently clear on the economic and condition-specific limits on the effects of various factors on high-strength bolts under complex stress conditions. In response to these problems, the aim of this paper is to analyse the effects of different factors on the load-bearing performance of high-strength bolts on the basis of numerical simulations. The mesoscale critical plastic strain (MCEPS) method was used on the model fracture and the accuracy of the model evaluation was verified. The effects of grade, type, diameter and bolt hole clearance on the ductile fracture behaviour of high-strength bolts were investigated. It was found that fully threaded bolts and through-hole clearances can mainly affect the load-bearing properties of high-strength bolts and increase the bolt's fracture-deformation capacity. The load-bearing performance of high-strength bolts under the influence of different factors was also compared with the Eurocode design (EC3) predictions.

Bolt diameter
Bolt grade
Bolt hole clearance
Bolt type
High-strength bolts

http://resolver.tudelft.nl/uuid:a525cd82-18a8-4752-84bf-5d10b393cac6

https://doi.org/10.1016/j.istruc.2023.104967

2024-02-04

2352-0124

Structures, 56

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2023 Jie Li, Haohui Xin, Zhiqiang Wang, M. Veljkovic, Zhao Bingzhen, Junjie Zhao, José A.F.O. Correia