移动荷载激励下基于时空信息融合技术的弯桥损伤识别

孙 珂,张延庆

振动与冲击 ›› 2016, Vol. 35 ›› Issue (11) : 138-145.

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (11) : 138-145.
论文

移动荷载激励下基于时空信息融合技术的弯桥损伤识别

  • 孙  珂,张延庆
作者信息 +

Damage identification for curved bridge based on temporal-spatial information fusion technology under moving loads

  • SUN Ke, ZHANG Yan-qing
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文章历史 +

摘要

利用移动荷载激励下获得桥梁某测点的时程响应数据,结合小波包时频分析的特点,引入频带内具有时序性的局部能量概念,并以此定义了一个单测点时的损伤指标;进一步为了提高指标的准确性及抗噪能力,提出了利用不同速度(不同周期)不同测点的时空信息融合技术来进行最终损伤判别及分析。以一弯桥为研究对象,建立有限元模型,通过瞬态分析方法进行桥梁移动荷载作用下的损伤识别模拟,利用选定测点的时程响应数据,验证本文提出方法的可行性,并进一步进行了因素分析及抗噪能力研究。研究表明:本文提出的单测点损伤指标适用于多损伤识别,损伤位置处指标数值大小与测点位置有关,测点离损伤越近,数值越大;一定范围内移动荷载速度对结果的影响不大;通过时空信息融合技术做最终损伤判别可以有效的提高损伤识别的精确度及抗噪能力。

Abstract

According to the characteristics of wavelet packet time-frequency analysis, the concept of local energy with temporal frequency in the frequency band is introduced to propose a damage index that is used to detect the damage with the time-histories data under a moving load. In order to accuracy and anti-noise ability of  damage detection, the temporal-spatial information fusion technology which uses the information of different measuring points under different moving loads is developed to make the final result of damage detection. Taking a bridge as the research object, the finite element model is established to verify the feasibility of the proposed method. Then the factor analysis and anti-noise ability of the method are conducted. The results showed that the damage index of single point is applicable to detect the multiply damages. The value of index at the damage location is associated with the location of the point that .The results of damage detection are little changed under moving load speed within a certain range. Combined with the temporal-spatial information fusion technology, the final damage identification is made; and the accuracy and anti-noise ability of damage identification can be effectively improved.

关键词

损伤识别 / 弯桥 / 移动荷载 / 小波包分析 / 频带局部能量 / 时空信息融合技术

Key words

damage identification / curved bridge / moving load / wavelet packet analysis / local energy of frequency band / temporal-spatial information fusion

引用本文

导出引用
孙 珂,张延庆. 移动荷载激励下基于时空信息融合技术的弯桥损伤识别[J]. 振动与冲击, 2016, 35(11): 138-145
SUN Ke, ZHANG Yan-qing. Damage identification for curved bridge based on temporal-spatial information fusion technology under moving loads[J]. Journal of Vibration and Shock, 2016, 35(11): 138-145

参考文献

 [1] 黄新艺,陈彦江,李岩,等. 曲率半径对曲线箱梁桥车辆荷载作用下冲击效应的影响[J]. 振动与冲击. 2010(01): 38-42.
HUANG Xin-yi, CHEN Yan-jiang, LI Yan, et al. Influence of curvature radius on impact effects of a box-girder curved bridge under moving vehicle loads[J]. Journal of Vibration and Shock, 2010, 29(1): 38-42.
 [2] 闫桂荣,段忠东,欧进萍. 基于结构振动信息的损伤识别研究综述[J]. 地震工程与工程振动. 2007(03): 95-103.
YAN Gui-rong, DUAN Zhong-dong, OU Jin-ping. Review on structural damage detection based on vibration data [J]. Journal of Earthquake Engineer and Engineering Vibration, 2007, 27(3): 95-103.
 [3] 续秀忠,华宏星,陈兆能. 基于环境激励的模态参数辨识方法综述[J]. 振动与冲击. 2002(03): 3-7.
XU Xiu-zhong, HUA Hong-xing, CHEN Zhao-neng. Review of modal identification method based on ambient exc[J]. Journal of Vibration and Shock. 2002(03): 3-7.
 [4] 李德葆,陆秋海,秦权. 承弯结构的曲率模态分析[J]. 清华大学学报(自然科学版). 2002(02): 224-227.
LI De-bao, LU Qiu-hai, QIN Quan. Curvature modal analysis for bending structures [J]. Journal of Tsinghua University (Science and Technology), 2002, 42(2): 224―227.
 [5] 刘宇飞,辛克贵. 移动荷载激励下基于平均曲率模态的简支梁局部损伤识别[J]. 工程力学. 2013(07): 205-211.
LIU Yu-fei, XIN Ke-gui. Local Damage Detection of Simply Supported Beam on the Excitation of Moving Load Based on Average Curvature Modal[J]. Engineering Mechanics, 2013,30(07):205-211.
 [6] Bayissa W L, Haritos N, Thelandersson S. Vibration-based structural damage identification using wavelet transform[J]. Mechanical Systems and Signal Processing. 2008, 22(5): 1194-1215.
 [7] Hera A, Hou Z. Application of wavelet approach for ASCE structural health monitoring benchmark studies[J]. Journal of Engineering Mechanics. 2004, 130(1): 96-104.
 [8] 赵俊,张伟伟,马宏伟. 移动载荷作用下简支梁的动态响应及裂纹损伤识别研究[J]. 振动与冲击. 2011(06): 97-103.
ZHAO Jun, ZHANG Wei-wei, MA Hong-wei. Dynamic response and crack detection of simply supported beam under moving loads [J]. Journal of Vibration and Shock, 2011, 30(6): 97―103.
 [9] 丁幼亮,李爱群,缪长青,等. 基于小波包能量谱的大跨桥梁结构损伤预警指标[J]. 中国公路学报. 2006(05): 34-40.
DING You-liang, LI Ai-qun, LIAO Chang-qing, et al. Structural Damage Alarming Indices for Long-Span Bridges Based on Wavelet Packet Energy Spectrum. China Journal of Highway and Transport, 2006(05): 34-40.
[10] 余竹,夏禾,Goicolea J. M.,等. 基于小波包能量曲率差法的桥梁损伤识别试验研究[J]. 振动与冲击. 2013(05): 20-25.
YU Zhu, XIA He, Goicolea J. M, et al. Experimental study on bridge damage identification based on wavelet packet energy curvature difference method. Journal of Vibration and Shock, 2013(05):20-25
[11] 丁幼亮,李爱群,缪长青. 基于小波包能量谱的结构损伤预警方法研究[J]. 工程力学. 2006, 23(8): 42-48.
DING You-liang, LI Ai-qun, LIAO Chang-qing, et al. Investigation on the structural damage alarming method based on wavelet packet energy spectrum[J]. Engineering Mechanics, 2006, 23(8): 42-48.
[12] 王奉涛,马孝江,邹岩崑,等. 基于小波包分解的频带局部能量特征提取方法[J]. 农业机械学报. 2004(05): 177-180.
WANG Feng-tao, MA Xiao-jiang, ZOU Yan-kun, et al. Local Power Feature Extraction Method of Frequency Bands Based on Wavelet Packet Decomposition[J]. Transactions of the Chinese Society for Agricultural Machinery, 2004(05): 177-180.
[13] Ratcliffe C P. Damage detection using a modified Laplacian operator on mode shape data[J]. Journal of Sound and Vibration. 1997, 204(3): 505-517.
[14] 李茹,李弼程,李斗. D-S证据理论在时-空信息融合中的应用[J]. 计算机工程与应用. 2005(13): 174-176.
LI Ru, LI Bi-cheng, LI Dou. The temporal-spatial fusion based on the improved Dempster-Shafter technique[J], Computer Engineering and Applications, 2005(13): 174-176.
[15] 孙晓丹,欧进萍,侯钢领,等. 基于Bayesian估计的整体和局部信息融合的损伤识别[J]. 工程力学. 2012(06): 234-240.
SUN Xiao-dan, OU Jin-ping, HOU Gang-ling, et al. Damage identification based on Bayesian fusion of global and local information[J], Engineering Mechanics, 2012(06): 234-240.
[16] 郭惠勇,张陵,蒋健. 不同信息融合方法在结构损伤识别上的应用和分析[J]. 工程力学. 2006(01): 28-32.
GUO Hui-yong, ZHANG Ling, JIANG Jian. Application and analysis of different information fusion methods for structural damage detection[J]. Engineering Mechanics, 2006(01): 28-32.

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