Investigation of Exterior Girder Rotation and the Effect of Skew
during Deck Placement, TR-711
| 项目名称： | Investigation of Exterior Girder Rotation and the Effect of Skew during Deck Placement, TR-711 |
| 摘要： | With many of the nation's bridges approaching (or having already exceeded) their original design life, bridge replacement options/techniques/technologies continue to need to be advanced to meet the challenges faced by the bridge engineering community. Recent statistics reveal that there are approximately 600,000 bridges on the highway system and approximately 25%, by deck area, are considered either structurally deficient or functionally obsolete. Although the situation has improved some in recent years, a significant problem still exists given the number of bridges needing regular replacement. It is vitally important that, when constructed (or when only decks are replaced), the utmost highest construction practices are followed such that the final product has a high likelihood of achieving the target design life. It has been observed that current construction practices associated with constructing bridge decks sometimes results in excessive out-of-plane and torsional loads on exterior girders. Structurally, this can result in decks that are too thin or girders with excessive (and unintended) internal stresses. Functionally, this can result in bridges that are difficult to maintain or have rideability issues. |
| 状态： | Active |
| 资金： | $89,999 |
| 资助组织： | Iowa Department of Transportation |
| 管理组织： | Iowa Department of Transportation |
| 项目负责人： | Goetz, Vanessa |
| 执行机构： | Iowa State University, Ames |
| 主要研究人员： | Shafei, Behrouz |
| 开始时间： | 20160701 |
| 预计完成日期： | 20190831 |
| 实际结束时间： | 0 |
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