防灾减灾工程学报2013，Vol.33Issue(4)：455-460,6.
有限测点信息的网架结构风致损伤区域识别方法
Research on Method of Damage Area Identification of Space Truss Structure under Wind Load Based on Limited Measurement Information
摘要
Abstract
It is inevitable that space truss structure will be damaged under wind excited.Due to numerous nodes and bars in the space truss structure,it is unable to identify the structural damage based on measurement response information obtained by arranging sensors on all nodes.Therefore,in this paper,wavelet transform method is used for capturing the high frequency information of structural nodes acceleration response under wind loads.The number of acceleration sensors is determined by rational division of space truss structure based on analysis of influence of bars damage on nodes acceleration response.The damage area in the bars can be identified by lesser sensors measurement information.Then the damaged bars can be easily detected in the damage area of a space truss structure.At last,taking a space truss structure as a numerical example,the damage area identification is carried out by considering measurement noise.The result shows that the proposed method is effective.关键词
网架结构/风荷载/损伤区域/有限测点/小波变换Key words
space truss structure/ wind load/ damage area/ limited measurement/ wavelet transform分类
建筑与水利引用本文复制引用
刘晖,胡雄,周强,瞿伟廉..有限测点信息的网架结构风致损伤区域识别方法[J].防灾减灾工程学报,2013,33(4):455-460,6.基金项目
国家自然科学基金面上项目(51078301)资助 （51078301）
