Innovative Bridge Deck Using High Performance Fiber Reinforced Cement Composites

使用高性能纤维增强水泥复合材料的创新桥面板

• 批准号: 0096700
• 负责人: Antoine Naaman
• 金额: $ 29.7万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-15 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0096700&HistoricalAwards=false
• 关键词: Innovative; Bridge; Deck; Using; Performance

This project aims at developing the basis for an innovative and durable concrete bridge deck, made with high performance fiber reinforced cement composites (HPFRCC) and reinforced with only one layer of bottom rebars (steel or FRP). The HPFRC composite is designed to allow the creation of an effective plastic hinge mechanism, with hinges forming at supports and in spans. It also replaces shrinkage and temperature reinforcements in two directions and reduces crack widths by orders of magnitude, thus leading to an exceptional deck durability. When the bottom reinforcement is prestressed, beneficial secondary moments created at the supports improve overall performance.

该项目旨在开发创新且耐用的混凝土桥面板的基础，该桥面板由高性能纤维增强水泥复合材料（HPFRCC）制成，并仅用一层底部钢筋（钢或玻璃钢）加固。 HPFRC 复合材料旨在创建有效的塑料铰链机构，在支撑件和跨度上形成铰链。它还取代了两个方向的收缩和温度增强材料，并将裂缝宽度减少了几个数量级，从而实现了卓越的甲板耐久性。 当底部钢筋受到预应力时，在支撑处产生的有益的二次力矩可提高整体性能。