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A Center of Excellence for Rural and Intermodal Transportation
| 题名： | A Center of Excellence for Rural and Intermodal Transportation |
| 作者： | D.W. Radford M.L. Peterson D. VanGoethem |
| 关键词： | excel；modal；rural；transport；center；cell；inter；elle；term；ence |
| 摘要： | Existing applications of composite materials technology to the repair of timber structures were evaluated. Based on the prior state of the art, it was determined that a new composites-based repair approach was necessary if the material was to be used to its fullest and if ease of field application was a criterion. The shear spiking approach that has been developed draws heavily on an approach coming into favor in laminated composite aerospace structures, known as “Z”-spiking. As in '‘Z”-spiking, this new approach to timber repair relies on rods, which in this case are made of pultruded fiberglass, inserted vertically through the beam to enhance the structure’s shear performance. Sub-scale tests of this concept have been performed, and stiffness and strength have been monitored. The results indicate that significant damage can be overcome through the insertion of the pultruded fiberglass rods. The results also indicate that localized repair is possible with this approach and that stiffness can be adjusted by varying the number and position of the transverse composite rods. |
| 报告类型： | 科技报告 |
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