| 曲率模态小波法用于网壳结构损伤的识别和定位 |
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| 引用本文： | 殷志祥,徐文杰,毛丽强.曲率模态小波法用于网壳结构损伤的识别和定位[J].地震工程与工程振动,2009,29(4). |
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| 作者姓名： | 殷志祥 徐文杰 毛丽强 |
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| 作者单位： | 1. 辽宁工程技术大学,土木建筑学院,辽宁,阜新,123000
2. 青岛星牌科技有限公司,山东,青岛,266000 |
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| 基金项目： | 辽宁省教育厅科学技术研究项目 |
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| 摘 要： | 工程结构损伤的识别与定位研究以往主要针对梁、框架等结构形式,根据大跨度空间结构杆件和节点繁多等特点,提出用曲率模态和小波混合方法对空间结构的损伤进行识别和定位.以跨度100 m的Schwedler网壳结构损伤前、后的曲率模态作为标识量,分别通过离散和连续小波变换,判断网壳结构有无损伤和损伤位置,统计了小波系数差与结构损伤的图形关系,计算了各种损伤工况下该方法判断损伤的准确程度.结果发现基于曲率模态和小波方法的大跨度网壳结构损伤定位精度很高,充分证明该方法对此类结构损伤定位具有有效性和实用性.
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| 关 键 词： | 曲率模态 小波方法 网壳结构 损伤识别与定位 动力方程 |
Study on mode curvature and wavelet method for identifying and locating damage to reticulated shell structures |
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| YIN Zhixiang,XU Wenjie,MAO Liqiang.Study on mode curvature and wavelet method for identifying and locating damage to reticulated shell structures[J].Earthquake Engineering and Engineering Vibration,2009,29(4). |
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| Authors: | YIN Zhixiang XU Wenjie MAO Liqiang |
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| Institution: | YIN Zhixiang1,XU Wenjie1,MAO Liqiang2(1.Architectural , Civil Engineering Institute,Liaoning Technical University,Fuxin 123000,China,2.Qingdao Star Technology Co.,Ltd.Qingdao 266000,China) |
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| Abstract: | The research to identify and locate the damage to the engineering structure mainly aimed at some simple structure forms before,such as beam and framework.In this paper the mixing of the mode curvature and wavelet method to identify and locate the damage to the spatial structure is considered.We take into account the multiplicity of the bars and nodes,and take the destructive and nondestructive mode curvatures of Schwedler reticulated shell with 100 m span as a mark,and calculate the graph relation between c... |
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| Keywords: | mode curvature wavelet transform shell structure damage identification and location dynamic equation |
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