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MRFs with Laser-Cut I-Beam-to-CHS-Column Joints: Seismic Performance and Repairability Potential
https://orcid.org/http://orcid.org/0000-0001-9659-0073
https://orcid.org/http://orcid.org/0000-0002-9084-6565
https://orcid.org/http://orcid.org/0009-0005-5101-2620
https://orcid.org/http://orcid.org/0000-0003-0480-405X
https://orcid.org/http://orcid.org/0000-0001-5750-2472
Traditionally, connecting steel I-beams to tubular cross section columns for seismic resistance involves extensive welding and additional plates, making it expensive and visually unappealing. The LASTEICON project addressed this by developing innovative beam-to-column connections using laser-cutting technology. The laser-cutting technology creates precise slots in circular hollow section columns, allowing short I-beams or plates to be inserted and welded for direct bending moment transfer. This not only improves joint continuity, stiffness and strength, but also simplifies on-site construction through prefabricated cross-joint assemblies and bolted simple, partial or full-strength connections. Building on this alternative approach to connecting I-beams to tubular columns, the ongoing LASTTS project is investigating the behavior of individual components under both monotonic and cyclic loading. The aim of the research project is to provide a strong foundation for further exploration of the potential of the laser-cutting technology in the construction sector, including for seismic-resistant structures. Prior to conducting experimental tests, a 3D multi-story building with perimeter MRFs (i.e., frames with two moment bays and one bay with replaceable dissipative fuses) was investigated to assess its seismic response and potential for repair after a Significant Damage seismic event. Nonlinear static and dynamic analyses were employed for the current study.
MRFs with Laser-Cut I-Beam-to-CHS-Column Joints: Seismic Performance and Repairability Potential
https://orcid.org/http://orcid.org/0000-0001-9659-0073
https://orcid.org/http://orcid.org/0000-0002-9084-6565
https://orcid.org/http://orcid.org/0009-0005-5101-2620
https://orcid.org/http://orcid.org/0000-0003-0480-405X
https://orcid.org/http://orcid.org/0000-0001-5750-2472
Traditionally, connecting steel I-beams to tubular cross section columns for seismic resistance involves extensive welding and additional plates, making it expensive and visually unappealing. The LASTEICON project addressed this by developing innovative beam-to-column connections using laser-cutting technology. The laser-cutting technology creates precise slots in circular hollow section columns, allowing short I-beams or plates to be inserted and welded for direct bending moment transfer. This not only improves joint continuity, stiffness and strength, but also simplifies on-site construction through prefabricated cross-joint assemblies and bolted simple, partial or full-strength connections. Building on this alternative approach to connecting I-beams to tubular columns, the ongoing LASTTS project is investigating the behavior of individual components under both monotonic and cyclic loading. The aim of the research project is to provide a strong foundation for further exploration of the potential of the laser-cutting technology in the construction sector, including for seismic-resistant structures. Prior to conducting experimental tests, a 3D multi-story building with perimeter MRFs (i.e., frames with two moment bays and one bay with replaceable dissipative fuses) was investigated to assess its seismic response and potential for repair after a Significant Damage seismic event. Nonlinear static and dynamic analyses were employed for the current study.
MRFs with Laser-Cut I-Beam-to-CHS-Column Joints: Seismic Performance and Repairability Potential
https://orcid.org/http://orcid.org/0000-0001-9659-0073
https://orcid.org/http://orcid.org/0000-0002-9084-6565
https://orcid.org/http://orcid.org/0009-0005-5101-2620
https://orcid.org/http://orcid.org/0000-0003-0480-405X
https://orcid.org/http://orcid.org/0000-0001-5750-2472
Traditionally, connecting steel I-beams to tubular cross section columns for seismic resistance involves extensive welding and additional plates, making it expensive and visually unappealing. The LASTEICON project addressed this by developing innovative beam-to-column connections using laser-cutting technology. The laser-cutting technology creates precise slots in circular hollow section columns, allowing short I-beams or plates to be inserted and welded for direct bending moment transfer. This not only improves joint continuity, stiffness and strength, but also simplifies on-site construction through prefabricated cross-joint assemblies and bolted simple, partial or full-strength connections. Building on this alternative approach to connecting I-beams to tubular columns, the ongoing LASTTS project is investigating the behavior of individual components under both monotonic and cyclic loading. The aim of the research project is to provide a strong foundation for further exploration of the potential of the laser-cutting technology in the construction sector, including for seismic-resistant structures. Prior to conducting experimental tests, a 3D multi-story building with perimeter MRFs (i.e., frames with two moment bays and one bay with replaceable dissipative fuses) was investigated to assess its seismic response and potential for repair after a Significant Damage seismic event. Nonlinear static and dynamic analyses were employed for the current study.
MRFs with Laser-Cut I-Beam-to-CHS-Column Joints: Seismic Performance and Repairability Potential
Lecture Notes in Civil Engineering
Mazzolani, Federico M. (editor) / Piluso, Vincenzo (editor) / Nastri, Elide (editor) / Formisano, Antonio (editor) / Vulcu, Cristian (author) / Don, Rafaela (author) / Händeler, Damian (author) / Hoffmeister, Benno (author) / Kanyilmaz, Alper (author)
International Conference on the Behaviour of Steel Structures in Seismic Areas ; 2024 ; Salerno, Italy
2024-07-03
13 pages
Article/Chapter (Book)
Electronic Resource
English
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