摘要
采用风洞试验与数值计算方法,研究了新疆赛吾迭格尔大桥施工状态与成桥状态的抗风稳定性。试验与计算结果均表明:新疆赛吾迭格尔大桥的静、动力抗风稳定性均不满足要求,需采取抗风措施来改善该桥的抗风性能。结合该桥的桥型特点及地理位置选用架设抗风缆系统、采用一联中央扣、降低主缆高度、改善桥面结构等几种抗风措施来提高桥梁的抗风性能。经风洞试验与计算分析,该桥的抗风性能有了很大的改善。研究结果为以后此类桥梁的设计及施工提供借鉴。
The wind-resistant behavior of a suspension bridge ' Xinjiang Siudirgol Bridge ' in both construction and completion stages was studied by using wind tunnel test and numerical calculation methods.It was shown that its static and dynamic wind-resistant behaviors do not satisfy requirements;wind-resistant measures must be taken to improve its wind-resistant behavior.In order to improve its wind-resistant behavior,considering the shape feature of Siudirgol Bridge and its geographical location,wind-resistant cables and single central buckles were installed,the height of the main cable was decreased,the bridge deck structure was improved,etc.The wind tunnel test and numerical calculation results indicated that its wind-resistant behavior is improved greatly.The research results could provide a guidance for design and construction of similar bridges.
出处
《振动与冲击》
EI
CSCD
北大核心
2010年第4期155-159,187,共6页
Journal of Vibration and Shock
基金
国家自然科学基金项目(50578014)
关键词
桥梁工程
悬索桥
风洞试验
抗风性能
抗风措施
节段模型
动力特性
bridge engineering
suspension bridge
test of wind-tunnel
wind-resistant behavior
wind-resistant measures
sectional model
dynamic behavior