| 应变模态在框架结构节点损伤诊断中的应用研究 |
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| 引用本文： | 徐丽,易伟建.应变模态在框架结构节点损伤诊断中的应用研究[J].振动．测试与诊断,2006,26(2):102-107. |
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| 作者姓名： | 徐丽 易伟建 |
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| 作者单位： | 1. 广州大学工程抗震研究中心,广州,510405
2. 湖南大学土木工程学院,长沙,410082 |
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| 摘 要： | 通过对某7层钢制框架结构节点损伤的数值模拟和模型试验，利用应变模态在结构损伤前后的相对变化进行框架结构节点损伤的诊断。结果表明，一阶应变振型对损伤及其位置敏感，高阶应变振型节点的存在使得依据高阶应变模态进行损伤诊断时容易造成误判。因此，利用一阶应变振型在损伤前后的相对变化可以对框架结构节点的损伤进行诊断。
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| 关 键 词： | 框架结构 损伤诊断 应变模态 节点损伤 |
| 收稿时间： | 2005-01-17 |
| 修稿时间： | 2005-06-27 |
Damage Detection of Frame Structure Joints Using Strain Modal Method |
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| Xu Li,Yi Weijian.Damage Detection of Frame Structure Joints Using Strain Modal Method[J].Journal of Vibration,Measurement & Diagnosis,2006,26(2):102-107. |
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| Authors: | Xu Li Yi Weijian |
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| Abstract: | The calculation and tests of vibration strain mode on a frame structure model to detect the damage of joints are presented in this paper. It is shown that the first order strain mode shape is sensitive to the damage degree and location of the frame joints. And the existence of vibration node in high order stain vibration shape may lead to misjudging. So the relative changes of first order strain mode before and after damage can be used to diagnosis the damage of frame structure joints. |
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| Keywords: | frame structure damage detection strain mode damage of joints |
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