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Design of Anchors for Rapid and Durable Strengthening of Bridges with Externally Bonded Carbon Fiber Reinforced Polymer Composites—Phase 2

项目名称：	Design of Anchors for Rapid and Durable Strengthening of Bridges with Externally Bonded Carbon Fiber Reinforced Polymer Composites—Phase 2
摘要：	The beams tested in Phase 1 had sufficient steel stirrup shear reinforcement, which allowed the research team to evaluate the effectiveness of U-wraps in anchoring the longitudinal CFRP reinforcement. However, in practice, an RC beam deficient in flexure may also be deficient in shear, requiring both vertical (shear) and longitudinal (flexural) CFRP reinforcement. Due to the lack of experimental data, the current ACI 440.2R design guidelines do not permit to count on shear U-wrap reinforcement to provide anchorage for the longitudinal CFRP. Thus, the specific objectives of the proposed research program are to determine how effective U-wraps are in: i. enhancing the shear capacity of shear-deficient RC beams, AND ii. increasing strain utilization of longitudinal CFRP reinforcement in shear-deficient RC beams. The primary expected outcome of this work will be more economical FRP strengthening. This will be accomplished by allowing the designer to limit the required area of longitudinal CFRP reinforcement through improved strain utilization (provided by the U-wrap anchorage) while, the same time, being able to consider U-wrap anchors as shear reinforcement.
状态：	Active
资金：	149418
资助组织：	Office of the Assistant Secretary for Research and Technology
管理组织：	Center for Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS)
项目负责人：	Donnell, Eric T
执行机构：	Delaware Center for Transportation
主要研究人员：	Tatar, Jovan
开始时间：	20220104
预计完成日期：	20230705
主题领域：	Bridges and other structures；Highways；Materials