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Field Performance of Timber Bridges 20. Gray Stress-Laminated Deck Bridge
| 题名： | Field Performance of Timber Bridges 20. Gray Stress-Laminated Deck Bridge |
| 作者： | Habib J. Dagher Frank M. Altimore Vincent Caccese Michael A. Ritter Richard Hebert |
| 关键词： | Timber, bridge, wood, stress-laminated |
| 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 fr 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. |
| 报告类型： | 科技报告 |
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