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Improving Infrastructure Sustainability 1: Extending Usable Lives to Steel Bridges by Halting Distortion-Induced Fatigue Crack Propagation Using Pretensioned Bolts and Plate Washers, Technical Summary.
| 题名： | Improving Infrastructure Sustainability 1: Extending Usable Lives to Steel Bridges by Halting Distortion-Induced Fatigue Crack Propagation Using Pretensioned Bolts and Plate Washers, Technical Summary. |
| 作者： | Liu, H.; Bennett, C.; Matamoros, A.; Li, J.; Barrett-Gonzalez, R.; Rolfe, S. |
| 关键词： | Steel bridges, Crack-arrest holes, Fatigue cracking, Out-of-plane fatigue |
| 摘要： | A study examining the effectiveness of crack-arrest holes of varying diameters under distortion-induced fatigue loading was performed. The investigation was comprised of both experimental and analytical components. The experimental study was performed on segments of plate girder loaded under distortion-induced fatigue. Crack-arrest holes of various diameters were drilled at the tips of the cracks of different lengths, and their effectiveness was evaluated. A suite of three-dimensional, solid-element finite element analyses was also used to parametrically vary crack-arrest hole diameter, placement, and crack length. The study also included an analytical examination of using pretensioned bolts and plate washers in a crack-arrest hole. Limited effectiveness was noted for this technique, so the majority of the research focused on appropriate crack-arrest hole sizing and placement. |
| 总页数： | Liu, H.; Bennett, C.; Matamoros, A.; Li, J.; Barrett-Gonzalez, R.; Rolfe, S. |
| 报告类型： | 科技报告 |
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