Composite Grid Reinforcement Concrete Columns

复合网格钢筋混凝土柱

• 批准号: 9632859
• 负责人: Stephen Tsai
• 金额: $ 29.72万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-04-15 至 2000-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9632859&HistoricalAwards=false
• 关键词: Composite; Grid; Reinforcement; Concrete; Columns

9632850 Tsai Steel reinforcing bars for concrete suffer from limited resistance to corrosion, costly field assembly and lack of ductility under severe earthquake. Composite materials have outstanding corrosion and fatigue resistance and a weight 1/5 of steel. Graphite fiber/organic matrix unidirectional composite materials have outstanding longitudinal stiffness over 20,000ksi and tensile strength over 200ksi, and when properly designed can compete directly with steel rebars. It is therefore the goal of this proposal to demonstrate and develop: A novel manufacturing method of composite grid reinforcement. Rapid factory/field assembly of reinforcing system. Grid reinforced containment skin for columns. Test data on columns subjected to static, dynamic and cyclic loads.

混凝土用钢筋的抗腐蚀能力有限，现场组装成本高，在强烈地震下延性差。复合材料具有优异的耐腐蚀和抗疲劳性能，重量仅为钢的1/5。石墨纤维/有机基单向复合材料纵向刚度超过20,000ksi，抗拉强度超过200ksi，设计合理时可与钢筋直接竞争。因此，本提案的目标是展示和开发：一种新的复合网格加固制造方法。快速工厂/现场加固系统组装。用于柱的网格强化外壳。柱受静、动、循环荷载的试验数据。