title: A Component-Based Study of the Effect of Diameter on Bond and Anchorage Characteristics of Blind-Bolted Connections.
abstract: Structural hollow sections are gaining worldwide importance due to their structural and architectural advantages over open steel sections. The only obstacle to their use is their connection with other structural members. To overcome the obstacle of tightening the bolt from one side has given birth to the concept of blind bolts. Blind bolts, being the practical solution to the connection hindrance for the use of hollow and concrete filled hollow sections play a vital role. Flowdrill, the Huck High Strength Blind Bolt and the Lindapter Hollobolt are the well-known commercially available blind bolts. Although the development of blind bolts has largely resolved this issue, the use of structural hollow sections remains limited to shear resistance. Therefore, a new modified version of the blind bolt, known as the "Extended Hollo-Bolt" (EHB) due to its enhanced capacity for bonding with concrete, can overcome the issue of low moment resistance capacity associated with blind-bolted connections. The load transfer mechanism of this recently developed blind bolt remains unclear, however. This study uses a parametric approach to characterising the EHB, using diameter as the variable parameter. Stiffness and load-carrying capacity were evaluated at two different bolt sizes. To investigate the load transfer mechanism, a component-based study of the bond and anchorage characteristics was performed by breaking down the EHB into its components. The results of the study provide insight into the load transfer mechanism of the blind bolt in question. The proposed component-based model was validated by a spring model, through which the stiffness of the EHB was compared to that of its components combined. The combined stiffness of the components was found to be roughly equivalent to that of the EHB as a whole, validating the use of this component-based approach.
authors.affiliation: Department of Civil and Environmental Engineering, College of Engineering, King Faisal University (KFU), P. O. Box 380, Al-Hofuf, Al-Ahsa 31982, Kingdom of Saudi Arabia.
authors.forename: Muhammad Nasir
authors.initials: MN
authors.lastname: Amin
authors.affiliation: Department of Civil Engineering, University of Nottingham, Nottingham, United Kingdom.
authors.forename: Salman
authors.initials: S
authors.lastname: Zaheer
authors.affiliation: Alamoudi Water Research Chair, King Saud University, P.O. Box 2460, Riyadh 11451, Kingdom of Saudi Arabia.
authors.forename: Abdulrahman Ali
authors.initials: AA
authors.lastname: Alazba
authors.affiliation: Department of Civil and Environmental Engineering, College of Engineering, King Faisal University (KFU), P. O. Box 380, Al-Hofuf, Al-Ahsa 31982, Kingdom of Saudi Arabia.
authors.forename: Muhammad Umair
authors.initials: MU
authors.lastname: Saleem
authors.affiliation: Department of Civil and Environmental Engineering, College of Engineering, King Faisal University (KFU), P. O. Box 380, Al-Hofuf, Al-Ahsa 31982, Kingdom of Saudi Arabia.
authors.forename: Muhammad Umar Khan
authors.initials: MU
authors.lastname: Niazi
authors.affiliation: Department of Civil and Environmental Engineering, College of Engineering, King Faisal University (KFU), P. O. Box 380, Al-Hofuf, Al-Ahsa 31982, Kingdom of Saudi Arabia.
authors.forename: Nauman
authors.initials: N
authors.lastname: Khurram
authors.affiliation: Alamoudi Water Research Chair, King Saud University, P.O. Box 2460, Riyadh 11451, Kingdom of Saudi Arabia.|Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad, 22060, Pakistan.
authors.forename: Muhammad Tahir
authors.initials: MT
authors.lastname: Amin
mesh_terms: D003252:Construction Materials; D013232:Steel
chemical_list: D013232:Steel