摘要
对国内某预应力混凝土独塔连续刚构斜拉桥(铁路桥)的结构动力特性计算、主梁气动参数的数值模拟计算(CFD)、成桥和典型施工阶段初步的抗风稳定性、斜拉索涡激振动性能和风雨振性能分析评价等进行研究。研究结果表明:无论在该大桥的成桥状态还是施工状态,其主梁具备足够的抗风稳定性,但斜拉索存在发生风雨振动的可能性。
This paper studies calculation of dynamic characteristics of structure,computational fluid dynamics（ CFD） of aerodynamic parameters of girder,preliminary wind- resistant stability at the stages of completed bridge and typical construction, analysis and evaluation of vortex- induced vibration performance and wind- rain- induced vibration performance of stayed cables,etc. of some domestic prestressed concrete single- tower continuous steel structure cable- stayed bridge（ railway bridge）. The results of research show that the girder exhibits enough wind- resistant stability no matter the bridge is at the states of completed bridge or construction,but the possibility of wind- rain- induced vibration exists is stayed cables.
出处
《公路交通技术》
2015年第6期55-59,共5页
Technology of Highway and Transport
基金
国家自然科学基金项目(51278435)
关键词
独塔斜拉连续刚构桥
数值模拟
斯克拉通数Sc
风雨振
single-tower cable-stayed continuous steel structure bridge
numerical simulation
Sklar Number Sc
wind-rain-induced vibration
