Stainless Steel Strands for Prestressed Concrete Bridge Elements
| 项目名称： | Stainless Steel Strands for Prestressed Concrete Bridge Elements |
| 摘要： | Prestressed concrete elements such as beams, girders, piles, and decks are an essential part of the vast majority of bridges built in the United States. Concrete bridge elements that are built with prestressed 7-wire uncoated steel strands are susceptible to corrosion leading to structure deterioration. Delaying strand corrosion will reduce maintenance needs, extend the bridge service life, and enhance the overall safety. Therefore, state departments of transportation (DOTs) have been investigating alternative strand materials such as stainless steel to address steel strand corrosions. However, there is no national standards or specifications to support bridge owners in using stainless steel strands. Bridge owners, fabricators, and contractors need specifications and guidelines for the applications of stainless steel strands for prestressed concrete bridge elements. The objectives of this research are to (1) propose modification to the American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) bridge design and construction specifications and (2) develop guidelines for the applications of stainless steel strands for prestressed concrete bridge elements including design examples to demonstrate the application of the proposed modifications. At the minimum, the research shall include pre-tensioning and post-tensioning of concrete bridge elements. |
| 状态： | Active |
| 资金： | 600000 |
| 资助组织： | National Cooperative Highway Research Program<==>American Association of State Highway and Transportation Officials (AASHTO)<==>Federal Highway Administration |
| 项目负责人： | Dekelbab, Waseem |
| 执行机构： | University of Houston, Texas |
| 开始时间： | 20200701 |
| 预计完成日期： | 20230301 |
| 主题领域： | Bridges and other structures；Construction；Design；Highways；Materials |
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