| 基于模态应变能法识别混凝土梁结构损伤的数值及试验研究 |
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| 引用本文： | 王锋,郑玉芳.基于模态应变能法识别混凝土梁结构损伤的数值及试验研究[J].福州大学学报(自然科学版),2007,35(5):713-719. |
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| 作者姓名： | 王锋 郑玉芳 |
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| 作者单位： | 福州大学土木工程学院,福建,福州,350002 |
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| 基金项目： | 福建省青年科技人才创新基金 |
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| 摘 要： | 基于模态应变能理论,得到能用于混凝土梁结构损伤的识别指标.假定结构存在不同位置和不同程度的损伤,运用数值计算及试验所测数值结果,得到梁损伤前后的前5阶模态,然后再运用Mathematics软件编程计算结构的各单元的损伤指标.数值模拟及试验结果表明,损伤指标在损伤单元处的数值是最大的.
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| 关 键 词： | 混凝土梁 结构损伤识别 模态应变能 |
| 文章编号： | 1000-2243(2007)05-0713-07 |
| 修稿时间： | 2007年1月19日 |
Numerical and experimental research on concrete beam structure damage identification based on modal strain energy |
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| WANG Feng,ZHENG Yu-fang.Numerical and experimental research on concrete beam structure damage identification based on modal strain energy[J].Journal of Fuzhou University(Natural Science Edition),2007,35(5):713-719. |
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| Authors: | WANG Feng ZHENG Yu-fang |
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| Institution: | (College of Civil Engineering,Fuzhou University,Fuzhou, Fujian 350002,China) |
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| Abstract: | Based on the theory of modal strain energy,a damage index is deduced to identify the concrete beam structure damage.In this paper,supposing there lie some different damage positions and extents in structure,the numerical calculation and testing results are applied to obtain the first five modes of beam structure before and after damage,and then every element damage index in structure is calculated through applying the Software Mathematics program.The numerical and experimental results show that the damage index value in the damage element is the biggest. |
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| Keywords: | concrete beam structure damage identification modal strain energy |
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