摘要
采用双梁法力学计算模型对大沽河航道桥的成桥状态及施工状态进行了动力特性分析,依托全桥气弹模型风洞试验,对此独塔自锚式分离双箱梁悬索桥进行了成桥状态和施工状态的颤振及抖振试验,可测定颤振临界风速及抖振响应,据此分析评估该桥的抗风性能。结果表明,该桥具有较好的抗风稳定性,并对同类型桥梁的设计有一定指导作用。
The dynamical analysis of Dagu-river Channel Bridge during construction and service were conducted by adopting a double-beam mechanical model. Flutter and buffeting vibration of the single-tower self-anchored suspension bridge with separated double-box girder were studied by conducting overall bridge aeroelastic model wind tunnel test. The critical flutter wind speed and buffeting response were measured, and wind-resistant property of the bridge was assessed based on the experimental results. The results showed that the bridge has good aerodynamic stability which might be a reference for design of the same bridge type.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2007年第12期84-87,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50538050)
国家"863"计划(2006AA11Z108)
关键词
独塔自锚式悬索桥
分离双箱梁
动力特性
全桥气弹模型
抗风性能
single-tower self-anchored suspension bridge
separated double-box girder
dynamic behavior
overall bridge aeroelastic model
wind-resistant property
