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Improving Infrastructure Sustainability 2: Repairing Existing Fatigue Cracks in Steel Bridges Using Carbon Fiber Reinforced Polymer Materials, Technical Summary.
| 题名： | Improving Infrastructure Sustainability 2: Repairing Existing Fatigue Cracks in Steel Bridges Using Carbon Fiber Reinforced Polymer Materials, Technical Summary. |
| 作者： | Bun, S. H.; Bonet, E.; Matamoros, A.; Bennett, C.; Barrett-Gonzalez, R.; Li, J.; Rolfe, S. |
| 关键词： | Steel bridges, Carbon fiber reinforced polymer, Fatigue cracks, Distortion-induced fatigue |
| 摘要： | This report describes the results of an experimental program to evaluate the use of composite materials to prevent and repair distortion-induced fatigue damage in web-gap regions of steel girders. In this method of repair, a composite block is cast in place in the area surrounding the cross frame-to-girder connection to provide an alternate load path and reduce the stress demands in the welds of the connection. Two full-depth bridge girders were subjected to dynamic loading under a constant force range and allowed to develop fatigue cracks. The girders were subsequently repaired using composite blocks and subjected to several million fatigue cycles. |
| 总页数： | Bun, S. H.; Bonet, E.; Matamoros, A.; Bennett, C.; Barrett-Gonzalez, R.; Li, J.; Rolfe, S. |
| 报告类型： | 科技报告 |
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