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Prying effect in unstiffened extended endplate connection with circular bolts configuration
Abstract The behavior of eight-bolt extended endplate connection with circular bolts configuration under monotonic and cyclic loadings was experimentally investigated. The results of a series of component experimental tests and finite element (FE) simulations were used to develop a strength model to predict the connection capacity and prying forces. The effect of the column flange thickness, the endplate thickness, and the bolt diameter on the connection performance and the prying forces were investigated. Three failure modes were identified. Based on the experimental and FE results, a design procedure and an example were proposed. The results showed that a minimum of 7.4 bolts out of the 8 bolts present in the investigated connections were effective in carrying the applied load and reached their full capacity at the point of ultimate. This leads to a higher design capacity of the connection. Compared to the rectangular bolt configuration, the circular configuration requires less fabrication when omitting stiffeners but requires thicker endplate.
Highlights Extended endplate connections are investigated experimentally and numerically. Circular bolt distribution is used and beam flange stiffeners are removed. Prying effect is investigated. Strength model is developed to predict the response. A design procedure and example are presented.
Prying effect in unstiffened extended endplate connection with circular bolts configuration
Abstract The behavior of eight-bolt extended endplate connection with circular bolts configuration under monotonic and cyclic loadings was experimentally investigated. The results of a series of component experimental tests and finite element (FE) simulations were used to develop a strength model to predict the connection capacity and prying forces. The effect of the column flange thickness, the endplate thickness, and the bolt diameter on the connection performance and the prying forces were investigated. Three failure modes were identified. Based on the experimental and FE results, a design procedure and an example were proposed. The results showed that a minimum of 7.4 bolts out of the 8 bolts present in the investigated connections were effective in carrying the applied load and reached their full capacity at the point of ultimate. This leads to a higher design capacity of the connection. Compared to the rectangular bolt configuration, the circular configuration requires less fabrication when omitting stiffeners but requires thicker endplate.
Highlights Extended endplate connections are investigated experimentally and numerically. Circular bolt distribution is used and beam flange stiffeners are removed. Prying effect is investigated. Strength model is developed to predict the response. A design procedure and example are presented.
Prying effect in unstiffened extended endplate connection with circular bolts configuration
El Kalash, Sana N. (author) / Hantouche, Elie G. (author)
Journal of Constructional Steel Research ; 160 ; 402-410
2019-05-30
9 pages
Article (Journal)
Electronic Resource
English
Modelling of Unstiffened Endplate Bolted Connections
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3D Simulation of Bolted Connections to Unstiffened Columns -- II. Extended Endplate Connections
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