Design of FRP Systems for Strengthening Concrete Girders in Shear
| 项目名称： | Design of FRP Systems for Strengthening Concrete Girders in Shear |
| 摘要： | Fiber reinforced polymer (FRP) systems have been used for more than 15 years and are becoming a widely accepted method of strengthening concrete structures. FRP systems for strengthening reinforced or prestressed concrete girders consist of externally bonded laminates or near-surface mounted bars. These systems may contain either carbon or glass fibers. Extensive research has shown that FRP systems improve both short-term and long-term flexural behavior of concrete girders. American Concrete Institute (ACI) Committee 440 has developed guidelines for design and construction of externally bonded FRP systems for strengthening concrete structures. In contrast to flexural behavior, there are less experimental and analytical data on the use of FRP systems for shear strengthening girders. The results of several experimental investigations have shown that FRP systems can be effective for increasing the shear strength of concrete girders, but there have been limited analytical studies of the shear behavior of concrete girders strengthened in this manner. Design of FRP strengthening systems has been based on system- or project-specific research. An American Association of State Highway and Transportation Officials (AASHTO) design method for FRP shear strengthening of concrete girders is needed. The objective of this project is to develop design methods, specifications, and examples for design of FRP systems for strengthening concrete girders in shear. The proposed specifications should be in load and resistance factor design (LRFD) format and should be suitable for recommendation to the AASHTO Highway Subcommittee on Bridges and Structures for adoption. |
| 状态： | Completed |
| 资金： | 400000 |
| 资助组织： | Federal Highway Administration<==>American Association of State Highway and Transportation Officials (AASHTO)<==>National Cooperative Highway Research Program |
| 项目负责人： | Hanna, Amir N |
| 执行机构： | Missouri University of Science and Technology, Rolla |
| 开始时间： | 20060327 |
| 实际结束时间： | 20100630 |
| 主题领域： | Bridges and other structures；Highways；I30: Materials |
相关文献
- Design of FRP Systems for Strengthening Concrete Girders in Shear: Phase II
- Design of FRP Systems for Strengthening Concrete Girders in Shear: Phase I
- Research fo AASHTO Standing Committee on Highways. Update of the 2012 AASHTO Guide Specification for Design of Bonded FRP Systems for Repair
- Guide Specifications for the Design of Externally Bonded FRP Systems for Repair and Strengthening of Concrete Structures
- Guidelines for the Design of Prestressed Concrete Bridge Girders Using FRP Auxiliary Reinforcement
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