[1]巫生平.温度影响下基于频率协整余量的桥梁损伤识别[J].福建工程学院学报,2019,17(06):532-538.[doi:10.3969/j.issn.1672-4348.2019.06.004]
　WU Shengping.Damage identification of bridge based on co-integration of frequencies under the influence of temperature[J].Journal of FuJian University of Technology,2019,17(06):532-538.[doi:10.3969/j.issn.1672-4348.2019.06.004]
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温度影响下基于频率协整余量的桥梁损伤识别()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第17卷
期数:
2019年06期
页码:
532-538
栏目:
出版日期:
2019-12-25

文章信息/Info

Title:
Damage identification of bridge based on co-integration of frequencies under the influence of temperature
作者:
巫生平
福建江夏学院
Author(s):
WU Shengping
School of Engineering, Fujian Jiangxia University
关键词:
频率; 协整; 温度影响; 悬索桥; 损伤识别
Keywords:
frequency;  co-integration;  influence of temperature;  suspension bridge;  damage identification
分类号:
TP206.3
DOI:
10.3969/j.issn.1672-4348.2019.06.004
文献标志码:
A
摘要:
基于频率的结构损伤识别结果易受外界环境温度的影响，应用具有一定的局限性，为此，引入计量经济学中处理非平稳信息的协整概念来消除温度对识别结果的影响。将结构正常运营状态下采集的数据作为训练样本，计算得到协整余量，再根据统计方法选取协整余量的控制线。监测中若频率的协整余量超过该控制线，即认为结构发生损伤。采用上述方法对某实际悬索桥进行分析，结果表明，所提出方法能有效识别悬索桥主梁、主缆和吊索的损伤，具有较好的工程应用前景。
Abstract:
The frequency-based structural damage identification was vulnerable to the ambient temperature, and its application has certain limitations. Therefore, the co-integration concept, commonly used to deal with the non-stationary information in econometrics, was introduced to eliminate the influence of temperature on the recognition results. The data collected under the normal state of the structure was taken as a training sample, then a co-integration residual can be obtained. A control line for co-integration residual could be selected according to the statistical theory. If the co-integration residual of frequencies exceeds the control line in the later monitoring process, a damage is considered as having occurred in the structure. Monitoring data of a suspension bridge was analyzed by using the proposed method. Results show that the proposed method can effectively identify the damage of the main beam, main cable and slings of the suspension bridge, and has a good engineering application prospect.

参考文献/References:

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更新日期/Last Update: 2019-12-25