Evaluation of Thermal Movements in Existing Bridges

现有桥梁热运动的评估

• 批准号: 8714894
• 负责人: Charles Roeder
• 金额: $ 12.76万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-01-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8714894&HistoricalAwards=false
• 关键词: Evaluation; Thermal; Movements; Existing; Bridges

Thermal movements of bridges is becoming an important design and construction consideration because some bridge expansion joints have been locked into place thus causing unknown internal stresses in the structure. This project will investigate the overall thermal movement of a bridge structure taking into account such factors as; placement, stiffness, restraint, and frictional resistance of the bearing and expansion joint systems, in addition to the continuity and geometry of the bridge system. The results will be very useful to the bridge engineering community.

由于一些桥梁伸缩缝被锁定，从而在结构中产生未知的内应力，因此桥梁的热运动正成为一个重要的设计和施工考虑因素。本项目将研究桥梁结构的整体热运动，考虑以下因素；除了桥梁系统的连续性和几何形状外，支座和伸缩缝系统的位置、刚度、约束和摩擦阻力。研究结果对桥梁工程界具有一定的参考价值。