A Technique for Strengthening Existing Continuous Non-Composite Steel Girder Bridges Using Post-Installed Shear Connectors and Inelastic Moment Redistribution
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Bibliographic Details
| Author(s): |
Amir Rez Ghiami Azad
(University of Tehran, Tehran, Iran)
Kerry Kreitman (Pivot Engineers, Austin, TX, USA) Michael Engelhardt (University of Texas at Austin, Austin, TX, USA) Todd Helwig (University of Texas at Austin, Austin, TX, USA) Eric Williamson (University of Texas at Austin, Austin, TX, USA) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Published in: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 1217-1224 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/vancouver.2017.1217 | ||||
| Abstract: |
Many older bridges are constructed with floor systems consisting of a non-composite concrete deck over steel girders. A potentially economical method for strengthening these bridges is to develop composite action by attaching the existing concrete deck to the steel beams using post-installed shear connectors. The current paper discusses this method based on the findings from a large-scale research study aimed at strengthening existing non- composite continuous steel girder bridges. The results of this research indicate that post- installed shear connectors are a feasible and efficient method of extending the useful service life of a non-composite steel girder bridge. Increases of more than 60-percent in the ultimate strength of the bridge girders tested in this study were attained by strengthening to a composite ratio of only 30-percent. The test program also exhibited excellent fatigue resistance for the post-installed shear connectors. |
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| Keywords: |
fatigue composite steel bridge strengthening shear connectors Post-Installed Inelastic Moment Redistribution Large-Scale
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