A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Finite Element Evaluation of New Retrofit Schemes for Pre-Northridge Connections
https://orcid.org/http://orcid.org/0000-0001-5036-1670
In the decade following the Northridge earthquake, some retrofit designs were developed to address the problems observed in pre-Northridge welded connections. These retrofit designs involved substantial field welding, making them expensive to implement and infeasible in many cases. Most pre-Northridge steel moment frames have not been retrofitted, but there is currently renewed interest due to adaptive reuse projects and retrofit initiatives. In this study, finite element models were used to investigate new retrofit schemes that may be more economical than existing options. The new retrofit schemes consist of improved beam web attachment, introducing a fuse plate at the bottom flange level, or a combination of the two. Finite element models were used to compare the stress state and inelastic demands at the beam-to-column welds before and after the retrofit schemes were implemented. The finite element models indicated that a fuse plate would be effective in reducing weld demands, such that the existing welds may not need not be back-gouged and replaced.
Finite Element Evaluation of New Retrofit Schemes for Pre-Northridge Connections
https://orcid.org/http://orcid.org/0000-0001-5036-1670
In the decade following the Northridge earthquake, some retrofit designs were developed to address the problems observed in pre-Northridge welded connections. These retrofit designs involved substantial field welding, making them expensive to implement and infeasible in many cases. Most pre-Northridge steel moment frames have not been retrofitted, but there is currently renewed interest due to adaptive reuse projects and retrofit initiatives. In this study, finite element models were used to investigate new retrofit schemes that may be more economical than existing options. The new retrofit schemes consist of improved beam web attachment, introducing a fuse plate at the bottom flange level, or a combination of the two. Finite element models were used to compare the stress state and inelastic demands at the beam-to-column welds before and after the retrofit schemes were implemented. The finite element models indicated that a fuse plate would be effective in reducing weld demands, such that the existing welds may not need not be back-gouged and replaced.
Finite Element Evaluation of New Retrofit Schemes for Pre-Northridge Connections
https://orcid.org/http://orcid.org/0000-0001-5036-1670
In the decade following the Northridge earthquake, some retrofit designs were developed to address the problems observed in pre-Northridge welded connections. These retrofit designs involved substantial field welding, making them expensive to implement and infeasible in many cases. Most pre-Northridge steel moment frames have not been retrofitted, but there is currently renewed interest due to adaptive reuse projects and retrofit initiatives. In this study, finite element models were used to investigate new retrofit schemes that may be more economical than existing options. The new retrofit schemes consist of improved beam web attachment, introducing a fuse plate at the bottom flange level, or a combination of the two. Finite element models were used to compare the stress state and inelastic demands at the beam-to-column welds before and after the retrofit schemes were implemented. The finite element models indicated that a fuse plate would be effective in reducing weld demands, such that the existing welds may not need not be back-gouged and replaced.
Finite Element Evaluation of New Retrofit Schemes for Pre-Northridge Connections
Lecture Notes in Civil Engineering
Mazzolani, Federico M. (editor) / Piluso, Vincenzo (editor) / Nastri, Elide (editor) / Formisano, Antonio (editor) / Richards, Paul W. (author)
International Conference on the Behaviour of Steel Structures in Seismic Areas ; 2024 ; Salerno, Italy
2024-06-24
12 pages
Article/Chapter (Book)
Electronic Resource
English
Retrofit of Pre-Northridge Moment-Resisting Connections
| British Library Online Contents | 2000
TECHNICAL PAPERS - Retrofit of Pre-Northridge Moment-Resisting Connections
| Online Contents | 2000
Finite Element Fracture Mechanics Study of Pre-Northridge Connections
| British Library Online Contents | 2006
NORTHRIDGE POSTSCRIPT: LESSONS ON STEEL CONNECTIONS
| Online Contents | 1995