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首页 > 过刊浏览>2018年第40卷第6期 >123-130. DOI:10.11835/j.issn.1674-4764.2018.06.017
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改进粒子群算法的两阶段梁式结构损伤识别
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Two-stage beam structure damage detection based on improved particle swarm optimization
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    摘要:

    针对实际工程监测时损伤识别误差大的问题，提出一种基于改进粒子群算法的两阶段识别方案。第1阶段利用D-S证据理论融合算法进行损伤定位；第2阶段利用改进的粒子群算法，对定位结果进行修正，同时准确定量损伤。仿真算例和实验分析结果表明：由于第1阶段损伤定位减少了可能损伤单元的数量，第2阶段基于改进粒子群算法的搜索范围减小，能更准确地识别多损伤和小损伤的位置和程度，且抗噪性能良好。

    Abstract:

    Considering large errors of damage identification during actual monitoring process, a two-stage detection method based on the improved particle swarm optimization(PSO)algorithm was proposed. The algorithm is then used to detect the structural damage locations preliminarily,and to validate the locating results and determine the damage extents precisely. The comparisons between the simulation and experiments show that the first phase of damage identification reduced the number of suspected damage locations, making the search domain of the second stage based on the improved particle swarm optimization algorithm significantly reduced. The presented two-stage recognition method can identify the damage locations and detect the damage extent precisely for multi-damage and small damage,with considerable capacity in anti-noise.

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牛维枫,曹晖.改进粒子群算法的两阶段梁式结构损伤识别[J].土木与环境工程学报（中英文）,2018,40(6):123-130. Niu Weifeng, Cao Hui. Two-stage beam structure damage detection based on improved particle swarm optimization[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2018,40(6):123-130.10.11835/j. issn.1674-4764.2018.06.017

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  • 收稿日期:2017-05-15
  • 在线发布日期: 2018-11-13
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