Structural Behavior of Tall Haunches in TxDOT Beam and Girder Bridges
| 项目名称： | Structural Behavior of Tall Haunches in TxDOT Beam and Girder Bridges |
| 摘要： | Deck haunches are commonly used on both prestressed concrete and structural steel girder bridges. The haunch is the area between the top of a bridge girder and the bottom of the concrete deck. Haunch geometry can be influenced by a variety of factors. A primary function of the haunch is to maintain a uniform deck thickness. Haunches are often needed to account for camber and cross-slope. Due to unusual geometric situations or design errors, beam and girder bridges sometimes require tall haunches, which calls into question the overall constructability and horizontal shear transfer between the girders and the deck. To date, no testing has been conducted to ensure the effectiveness of current TxDOT detailing practices. In this project, researchers will develop guidelines for analyzing and designing haunches having different heights and reinforcement detailing. The research will include full-scale laboratory testing of a wide range of haunch details for both prestressed concrete and structural steel girder bridges. Detailed computational models will also be developed. A parametric study will represent the range of dimensions encountered for the vast majority of Texas bridges. Haunch analysis, design, and detailing guidelines will be provided at the conclusion of this project. |
| 状态： | Active |
| 资金： | 990349 |
| 资助组织： | Texas Department of Transportation<==>Federal Highway Administration |
| 项目负责人： | Glancy, Chris |
| 执行机构： | Center for Transportation Research |
| 开始时间： | 20190710 |
| 预计完成日期： | 20221031 |
| 主题领域： | Bridges and other structures |
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