摘要
某大桥是国内首座三塔斜拉桥,结构形式复杂。该文首先建立了大桥的三维有限元动力分析的三主梁模型,采用大型有限元通用分析程序ANSYS对该桥的动力特性进行了分析,并给出了结构的自重效应对固有动力特性的影响。结果表明,这类斜拉桥结构的自重效应对整体固有频率影响很小。
A bridge is the first three-pylon cable-stayed bridge in China.Its structure is complicated.The article firstly sets up three-main-beam model for the three-dimension finite element dynamic analysis,uses the large finite element general program ANSYS to analyze the dynamic characteristic of the bridge,and gives the influence of the deadweight effect of structure on the inherent dynamic characteristic.The result makes clear that the deadweight effect of this structure of cable-stayed bridge influences a little the integral inherent frequency.
出处
《城市道桥与防洪》
2009年第5期64-66,共3页
Urban Roads Bridges & Flood Control
关键词
三塔斜拉桥
有限元通用分析程序
动力特性
有限元模型
three-pylon cable-stayed bridge,finite element general analysis program,dynamic characteristic,finite element model
