佛陈扩建桥钢-RPC组合铺装钢箱梁桥振动测试与模态识别

发布时间：2018-02-06 05:30

本文关键词： 正交异性钢桥面板钢-RPC组合铺装环境激励模态参数现场实测　出处：《钢结构》2016年11期 　论文类型：期刊论文

【摘要】：结构动力特性反映了桥梁质量和刚度分布特征,是桥梁动力分析的重要参数。为获得钢-RPC组合铺装正交异性桥面板钢箱梁桥的模态特征,了解桥面铺装刚度增大带来的结构整体刚度变化,采用基于参考点的环境激励法,通过在佛陈桥钢箱梁内布置多个测点,进行分批次测量,采用峰峰值拾取的方法识别了该桥多阶模态参数,测试的振型具有较好的合理性。
[Abstract]:The dynamic characteristics of the structure reflect the distribution characteristics of the mass and stiffness of the bridge and are the important parameters of the dynamic analysis of the bridge. In order to obtain the modal characteristics of the steel box girder bridge with orthotropic deck plate of the steel--RPC composite pavement. To understand the overall stiffness change of bridge deck pavement caused by the increase of stiffness, the environmental excitation method based on reference point is adopted to carry out the batch measurement by arranging several measuring points in the steel box girder of Fochen Bridge. The multi-order modal parameters of the bridge are identified by peak-peak pick-up method, and the measured modal shapes are reasonable.
【作者单位】：湖南大学土木工程学院桥梁系;湖南省交通规划勘察设计院;
【基金】：湖南省交通厅科技项目(201522) 国家重点基础研究发展计划(2015CB057701,2015CB057702) 国家自然科学基金项目(51278191)
【分类号】：U441.3;U448.213

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