Design Guidance for UHPC Connections of Precast Girders Made Continuous for Live Load
| 项目名称： | Design Guidance for UHPC Connections of Precast Girders Made Continuous for Live Load |
| 摘要： | Use of continuous bridge spans can reduce the required section size and can improve bridge durability by reducing the number of deck joints. If not detailed and constructed properly, continuity connections for precast concrete girders using conventional concrete tend to crack from the bottom due to moments resulting from creep and shrinkage effects in the girders. Ultra-high performance concrete (UHPC) has been successfully used in multiple applications related to connection of precast concrete bridge components and is frequently used in accelerated bridge construction In general, joints replaced or connections made using UHPC will have better durability and will allow for a smaller quantity of material to be used while still obtaining adequate load transfer between connected components. Previous research has shown that connections of precast girders for live load continuity using UHPC are a promising alternative to conventional connections. However, more comprehensive design guidance for continuity connections made with UHPC is needed for a variety of precast concrete bridge configurations. |
| 状态： | Active |
| 资金： | 44,999 |
| 资助组织： | Accelerated Bridge Construction University Transportation Center (ABC-UTC)<==>Office of the Assistant Secretary for Research and Technology |
| 开始时间： | 20210301 |
| 预计完成日期： | 20210228 |
| 主题领域： | Bridges and other structures；Construction；Design；Highways；Materials |
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