摘要
为确定使用15年后永和斜拉桥破损诊断所需要的"参考基",该文建立了双索面通过刚臂与主梁及边梁相连的三梁式力学模型,采用ANSYS结构分析程序对永和斜拉桥进行动力分析,对其振动模态参数(频率、振型及阻尼)进行识别,与动力测试结果进行对照表明,该文计算结果可作为斜拉桥完好状态下的动力"指纹";该结果为永和斜拉桥养护维修方案提供了技术支持,具有理论与实用价值。
In order to define the'reference base'required for the breaking diagnosis of Yonghe Ca- ble-stayed Bridge after 15 years,the article sets up the double-plane 3-beam mechanical model through connecting the rigid ann with the main beam and side beam.ANSYS structural analysis program is used to carry out the dynamic analysis of Yonghe Cable-stayed Bridge,to distinguish its vibrating modal parameters (frequency,vibrating type and damping),and to compare with the dynamic test result.The calculation result in the article can be used as the dynamic (finger mark) of the ca- ble-stayed bridge under the good status.This result has the theoretical and practical values to pro- vide the technical support for the maintenance scheme of Yonghe Cable-stayed Bridge.
出处
《城市道桥与防洪》
2008年第10期72-77,共6页
Urban Roads Bridges & Flood Control
关键词
斜拉桥
模态参数
动力分析
动力测试
cable-stayed bridge
medal parameter
dynamic analysis
dynamic test
