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Field Performance of Timber Bridges. 20. Gray Stress-Laminated Deck Bridge; Forest Service research paper
| 题名： | Field Performance of Timber Bridges. 20. Gray Stress-Laminated Deck Bridge; Forest Service research paper |
| 作者： | Dagher, H. J.; Altimore, F. M.; Caccese, V.; Ritter, M. A.; Hebert, R. M. |
| 关键词： | Structural timber; Bridges; Load bearing tests; Performance evaluation; Design; Construction; Wood moisture; Maine; Monitoring |
| 摘要： | The Gray bridge was constructed in the fall of 1991 in Gray, Maine. The bridge is a single-span, two-lane, stress-laminated deck structure that is approximately 24 ft long and 23 ft wide. It was constructed from chromated-copper-arsenate-(CCA-) treated eastern hemlock grown in Maine. This report presents information on the design, construction, and field performance of this bridge. The field performance of the bridge was monitored for 6-1/2 years, beginning shortly after construction. During the field monitoring program, data were collected related to wood moisture content, force level of stressing bars, behavior under static truck loading, and overall structural condition. With the exception of having to be retensioned approximately every 3 years, the bridge is performing well, with no structural or serviceability deficiencies. |
| 总页数： | 22p |
| 报告类型： | 科技报告 |
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