【摘要】 非对称式独塔斜拉桥结构新颖、造型美观,在桥梁工程中有着广泛的应用。以主跨200 m的八尺门独塔斜拉桥为工程背景,在结构动力特性分析的基础上,采用节段模型风洞试验对其成桥和施工两种状态下的颤振和涡振性能进行了详细的研究。节段模型风洞试验表明,由于主梁采用了气动性能较好的流线型断面,其颤振和涡振稳定性均满足规范要求。更多还原

【Abstract】 Asymmetric cable stayed bridge with single tower has novel structure and beautiful shape,and is widely applied in bridge engineering. In this paper,analysis of structural dynamic characteristics of the Bachimen Bridge,with a main span of 200 m,was performed.Based on this,the flutter and vortex vibration performance of the bridge both in service and construction stage were carried out thoroughly via segment models under wind tunnel test. The results shows that due to the streamlined section with better aerodynamic performance of the main girder,its flutter and vortex vibration stability all satisfied the specification requirements.更多还原