| 环境激励下结构损伤识别的综合指标法试验研究 |
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| 引用本文： | 常军,任永辉,陈忠汉.环境激励下结构损伤识别的综合指标法试验研究[J].工程力学,2011(7):130-135. |
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| 作者姓名： | 常军 任永辉 陈忠汉 |
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| 作者单位： | 苏州科技学院土木工程学院; |
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| 基金项目： | 江苏省自然科学基金项目(BK2007549); 建设部研究开发项目(2008-K2-35) |
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| 摘 要： | 结构损伤识别是结构健康监测和结构状态评估的主要前提之一。尽早了解结构的损伤状况和损伤位置有助于提高结构的预期可靠性和安全性,同时降低了结构的维修费用。论文主要研究了如何在环境激励下识别结构的损伤状况。基于曲率模态对结构局部损伤比较敏感和频率指标测试简单方便、精度高的特点,提出了一种以结构的曲率模态为基础,综合考虑频率变...
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| 关 键 词： | 随机子空间 损伤识别 不中断运营 曲率模态 模态分析 综合指标 |
EXPERIMENTAL INVESTIGATION OF STRUCTURAL DAMAGE IDENTIFICATION BY COMBINATION INDEX METHOD UNDER AMBIENT EXCITATION |
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| CHANG Jun,REN Yong-hui,CHEN Zhong-han.EXPERIMENTAL INVESTIGATION OF STRUCTURAL DAMAGE IDENTIFICATION BY COMBINATION INDEX METHOD UNDER AMBIENT EXCITATION[J].Engineering Mechanics,2011(7):130-135. |
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| Authors: | CHANG Jun REN Yong-hui CHEN Zhong-han |
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| Affiliation: | CHANG Jun,REN Yong-hui,CHEN Zhong-han(School of Civil Engineering,University of Science and Technology of Suzhou,Suzhou,Jiangsu 215011,China) |
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| Abstract: | Structural damage identification is one of the major prerequisites of structural health monitoring and structural status assessment.Early detection of the damage and its location can help improving the reliability and safety of the structure,thus reducing the maintenance cost.The paper focuses on how to identify the structural damage under ambient excitation.Since the curvature mode is more sensitive to structural local damage,while the frequency is easy to test with high precision,the paper presents an imp... |
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| Keywords: | stochastic subspace identification damage identification without interrupting the operation curvature mode modal analysis combination index |
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