基于动态测量柔度矩阵的悬索桥吊索损伤检测

孟凡豪1,2,3,于靖军2,马文硕2

振动与冲击 ›› 2019, Vol. 38 ›› Issue (14) : 267-275.

PDF(2205 KB)
PDF(2205 KB)
振动与冲击 ›› 2019, Vol. 38 ›› Issue (14) : 267-275.
论文

基于动态测量柔度矩阵的悬索桥吊索损伤检测

  • 孟凡豪1,2,3,于靖军2,马文硕2
作者信息 +

Cable damage detection of a suspension bridge in terms of dynamically measured flexibility matrix

  •   MENG Fanhao1,2,3, YU Jingjun2, MA Wenshuo2
Author information +
文章历史 +

摘要

基于动态测量柔度矩阵的结构形变和变形曲率是一种有效的悬索桥吊索损伤检测指标。首先,通过模拟仿真不同损伤程度和不同噪声影响下的8种吊索损伤情况,讨论了方法的可行性。仿真结果表明,动态测量柔度法能够定位5%噪声水平下的损伤程度达到90%及以上的单个和多个损伤。然后,通过实验室模型测试来进一步验证这些损伤指标对检测和定位损伤的有效性,并在实验中分析了模态截断对损伤估计的影响。实验表明,与变形位移相比,变形曲率对于检测和定位吊索损伤更为有效。

Abstract

The deformation and deformation curvature obtained by measuring the flexibility matrix are effective means to detect the damaged cables of suspension bridges.A simulation method,named as dynamically measured flexibility method,was proposed to locate damages in 8 scenarios at different locations of cables with different damage intensities and noises.The result shows the presented method is able to locate the single/multiple damages with severity of 95% and with the noise level of 5%.Then, laboratory mock-up tests were carried out to verify the effectiveness of the flexibility metrices for detecting and locating damages.The experimental results show that deformation curvature is more effective for detecting and locating damages than flexibility-based displacement patterns.In addition, modal truncation is to be minimized since measured flexibility has to approximate actual flexibility.

关键词

动态测量柔度矩阵 / 损伤检测 / 变形曲率 / 悬索桥

Key words

 dynamic measured flexibility matrix / damage detection / deformation curvature / suspension bridges

引用本文

导出引用
孟凡豪1,2,3,于靖军2,马文硕2. 基于动态测量柔度矩阵的悬索桥吊索损伤检测[J]. 振动与冲击, 2019, 38(14): 267-275
MENG Fanhao1,2,3, YU Jingjun2, MA Wenshuo2. Cable damage detection of a suspension bridge in terms of dynamically measured flexibility matrix[J]. Journal of Vibration and Shock, 2019, 38(14): 267-275

参考文献

[1] A. K. Pandey,M. Biswas. Damage detection in structures using changes in flexibility[J]. Journal of sound and vibration. 1994. 169(1): 3-17.
[2] A. K. Pandey,M. Biswas. Experimental verification of flexibility difference method for locating damage in structures[J]. Journal of sound and vibration. 1995. 184(2): 311-328.
[3] S. H. Sung,K. Y. Koo,H. J. Jung. Modal flexibility-based damage detection of cantilever beam-type structures using baseline modification[J]. Journal of Sound and Vibration. 2014. 333(18): 4123-4138.
[4] David P, Thambiratnam, Nimal J, et al. Development of a vibration based method to update axial shortening of vertical load bearing elements in reinforced concrete buildings[J]. Engineering Structures. 2013. 46: 49-61.
[5] Y. Q. Ni,H. F. Zhou,K. C. Chan, et al. Modal Flexibility Analysis of Cable‐Stayed Ting Kau Bridge for Damage Identification[J]. Computer-aided Civil & Infrastructure Engineering. 2010. 23(3): 223-236.
[6] Talebinejad I, Fischer C, Ansari F. Numerical Evaluation of Vibration-Based Methods for Damage Assessment of Cable-Stayed Bridges[J]. Computer-Aided Civil and Infrastructure Engineering, 2011, 26(3):239–251.
[7] Wickramasinghe W R, Thambiratnam D P, Chan T H T, et al. Vibration characteristics and damage detection in a suspension bridge[J]. Journal of Sound & Vibration, 2016, 375:254-274.
[8] Catbas F N, Brown D L, Aktan A E. Parameter Estimation for Multiple-Input Multiple-Output Modal Analysis of Large Structures[J]. Journal of Engineering Mechanics, 2004, 130(8):921-930.
[9] Catbas F N, Gul M, Burkett J L. Conceptual damage-sensitive features for structural health monitoring: Laboratory and field demonstrations[J]. Mechanical Systems & Signal Processing, 2008, 22(7):1650-1669.
[10] Preumont A. Vibration Control of Active Structures: An Introduction[J]. Meccanica, 1999, 34(2):139-139.
[11] 杨秋伟, 刘济科. 工程结构损伤识别的柔度方法研究进展[J]. 振动与冲击, 2011, 30(12):147-153.
Yang Q W, Liu J K. Structural damage identification with flexibility changed: A review[J]. Journal of Vibration & Shock, 2011, 30(12):147-153.
[12] 刘义伦, 时圣鹏, 廖伟. 利用曲率模态识别桥梁损伤的研究[J]. 振动与冲击, 2011, 30(8):77-81.
Liu Y L, Shi S P, Wei L. Bridge damage identification using curvature mode shapes[J]. Journal of Vibration & Shock, 2011, 30(8):77-76.
[13] 姚京川, 杨宜谦, 王澜. 基于模态柔度曲率改变率的桥梁结构损伤识别方法[J]. 中国铁道科学, 2008, 29(5):51-57.
Yao J, Yang Y, Wang L. Damage detection method for bridge structure based the modal flexibility curvature change ratio[J]. China Railway Science, 2008.
[14] 李永梅, 周锡元, 高向宇. 基于柔度曲率矩阵的结构损伤识别法[J]. 北京工业大学学报, 2008, 34(10):1066-1071.
Li Y M, Zhou X Y, Gao X Y. Flexibility curvature matrix method based on mode in the damage detection of structures[J]. Journal of Beijing University of Technology, 2008, 34(10):1066-1071.
[15] Shi Z Y, Law S S, Zhang L M. Damage Localization by Directly Using Incomplete Mode Shapes[J]. Journal of Engineering Mechanics, 2000, 126(6):656-660.
[16] Soman R, Kyriakides M, Onoufriou T, et al. Numerical evaluation of multi-metric data fusion based structural health monitoring of long span bridge structures[J]. Structure & Infrastructure Engineering, 2017:1-12.
[17] Achkire Y, Preumont A. Optical measurement of cable and string vibration[J]. Shock and Vibration, 1998, 5(3): 171-179.
[18] 曹晖, 张新亮, 李英民. 利用模态柔度曲率差识别框架的损伤[J]. 振动与冲击, 2007, 26(6):116-120.
Cao H, Zhang X L, Li Y M. Damage evaluation of frames by modal flexibility curvature[J]. Journal of Vibration & Shock, 2007, 26(6):116-117.
[19] 曹晖, Michael I. Friswell. 基于模态柔度曲率的损伤检测方法[J]. 工程力学, 2006, 23(4):33-38.
Hui C, Friswell M I. Nondestructive damage evaluation indicator based on modal flexibility curvature [J]. Engineering Mechanics, 2006, 23(4):33-38.

PDF(2205 KB)

1264

Accesses

0

Citation

Detail

段落导航
相关文章

/