摘要
结合黄河口模型试验厅的实际工程,进行了张弦桁架下弦拉索振动频率测试。通过对测试数据的分析,研究了拉索振动测试的激励方式及测点布置位置对测试结果的影响,提出了拉索自由振动的多跨连续梁模型,并根据ANSYS有限元模拟计算结果和现场实测结果的对比,证实了多跨连续梁模型的正确性,为张弦桁架拉索动力特性的分析及索力测试提供了方便。
Based on the project of the Yellow River Estuary Model Testing Hall,the vibration frequency of the bottom chord of the truss string structure was tested in site.The test results were affected by motivation mode and sensor placements on the string according to the analysis of the test data.A new multi-span continuous beam model of the free vibration of the string was put forward and validated according to the comparison between the simulation results by ANSYS and field results.The method can be used conveniently to the dynamic characteristic analysis and force test of the string.
出处
《建筑结构》
CSCD
北大核心
2012年第10期79-82,共4页
Building Structure
关键词
黄河口模型试验厅
张弦桁架
拉索振动测试
多跨连续梁
Yellow River Estuary Model Testing Hall
truss string
cable vibration testing
multi-span continuous beam
