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A new energy-dissipating RBS connection with double-nut-bolts : seismic performance assessment and design methodology
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Abar, Bahram Mirzaie, Bakhshayesh, Yashar, Garcia, Reyes and Hajirasouliha, Iman (2023) A new energy-dissipating RBS connection with double-nut-bolts : seismic performance assessment and design methodology. Engineering Structures, 293 . 116596. doi:10.1016/j.engstruct.2023.116596 ISSN 0141-0296.
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Official URL: http://doi.org/10.1016/j.engstruct.2023.116596
Abstract
This article investigates analytically the seismic performance of a new RBS beam-column connection system with Double Nut Bolts (RBS-DNB) and double shear tabs. The bolts in the proposed RBS-DNB connection are used to: i) increase the strength of the beam’s reduced section, ii) increase the energy dissipating capacity of the connection, and iii) delay damage of the beam in the plastic hinge zone. A reference RBS connection from the literature is first modeled and calibrated in Abaqus® software. A set of RBS-DNB connections are then designed (according to a new proposed method) and subsequently modeled in Abaqus®. The analytical results from the reference RBS connection and RBS-DNB connections are then compared in terms of cyclic response, beam strength, dissipated energy, beam hinge deformation and damage. The results show that, compared to the reference RBS connection, the proposed RBS-DNB connection system can increase the strength of the beam’s reduced section and dissipate more energy by up to 16 % and 12 %, respectively. Moreover, a damage assessment shows that RBS-DNB connections can efficiently delay the initiation of beam hinging, and reduce buckling deformation and damage to the beam hinge compared to the reference RBS connection. The new proposed design method ensured the safe load-carrying mechanism of RBS-DNB connections, and it also predicted well the potential damage at the components of the RBS-DNB connections. Finally, the results of pushover analyses on typical 4-storey buildings with RBS-DNB connections demonstrated their higher lateral load bearing capacity compared to those with conventional RBS connections. This study contributes towards developing more robust energy-dissipating connections for steel buildings located in seismic areas.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Steel, Structural -- Earthquake effects, Building, Iron and steel -- Joints, Structural analysis (Engineering), Structural engineering, Earthquake resistant design, Joints (Engineering) -- Design, Building, Iron and steel -- Earthquake effects | ||||||||
Journal or Publication Title: | Engineering Structures | ||||||||
Publisher: | Elsevier Science Ltd. | ||||||||
ISSN: | 0141-0296 | ||||||||
Official Date: | 15 October 2023 | ||||||||
Dates: |
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Volume: | 293 | ||||||||
Article Number: | 116596 | ||||||||
DOI: | 10.1016/j.engstruct.2023.116596 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 19 July 2023 | ||||||||
Date of first compliant Open Access: | 19 July 2023 |
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