Seismic Behavior of Prestressed Concrete Segmental Box Gir- der Bridges with External Tendons

预应力混凝土外筋节片箱梁桥的抗震性能

• 批准号: 8419430
• 负责人: John Breen
• 金额: $ 16.1万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1985
• 资助国家: 美国
• 起止时间: 1985-09-15 至 1987-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8419430&HistoricalAwards=false
• 关键词: Seismic; Behavior; Prestressed; Concrete; Segmental

Segmental bridges of various types are being built and have been built over a period of time, without the benefit of research investigations. Some of the existing bridges are showing signs of distress as a result of creep, shrinkage, and temperature effects. This project will investigate analytically and experimentally the effects of the factors noted above in conjunction with applying external tendons as a prestressing method to remedy the adverse effects and strengthen the structure as a whole.

各种类型的节段式桥梁正在建设中，并已建成 在一段时间内，没有研究调查的好处。 因此，一些现有的桥梁出现了损坏的迹象 蠕变、收缩和温度效应。 该项目将 分析和实验研究的影响因素 上面提到的与应用外部肌腱作为 预应力方法，以弥补不利影响，并加强 整体结构。