利用频段辨识思想的FDD自动分析方法

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中图分类号： U441+.3 ；TB123;TH17 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202311020

Abstract：Toacevetheutomaticaalysisfuctiooffrequencydomaindcomposition（D），thesposeofstructureisalyeby FDDto obtain thefrstsingularvaluespectrum.Pointswithanampitudeles tanthemeanvalue withitebandwidthareremovedtoetract thepeakregionTepeakegioistenividedintoultipleintervalsusingpercentilestoconstructdatasetsTesedatasetsareaalyd sequentiallybyafrequencybandidentication methodtoobtanseveralmodalfrequencybndeintersetionofthdentifiedfreqency bandsistakenandthemaximumsingularvuewithineachintersectionisusedtolocatethepeakpoint，soastoachieveautomated identificationofmodalparametersTakingtefiniteelementmodeloftheLysefjordBridgeandanassembledframestructureasojectsfor identificationthlsotatosdetdesodeeaitdacdfresly （20 4.346% .Itachievesautomaticadaccuratemodalidentificationofbridgeandfraestructureswitoutanymanalinterventio，ichhsgood engineering application prospects.

Keywords：modal parameter identification; automation; frequency domain decomposition

模态参数能准确反映结构的工作状态，是结构动态设计和损伤识别的重要指标。（剩余12258字）