Methodology for a damage identification of highway bridges based on coupling vibration of bridge and vehicle

基于桥车耦合振动的公路桥梁损伤识别方法

• 批准号: 17560425
• 负责人: KIM Chul-Woo
• 金额: $ 2.24万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560425/
• 关键词: Algorithm; Damage identification; Pseudo-Static formulation; Tikhonov regularization; Total Least Square; Traffic-induced vibration

This research focused on developing a novel methodology for a vibration-based damage identification technique on bridge condition screening in the time-domain using a moving vehicle on the bridge as an actuator. Diagnostic investigation undertaken directly from the change in the element stiffness is the fundamental concept adopted in this study for condition screening of bridges. The element stiffness index (ESI), which indicates the ratio of damaged flexural rigidity of the finite element of a bridge model to an intact element, is used as the indicator of the bridge-health condition. The ESI governing linear equation is subtracted from equations of motion of a bridge-vehicle interactive system based on a pseudo-static formulation. The ESI linear equation is solved using the Tikhonov regularization method as well as Total Least Square approximation. The damage identification technique is verified through a numerical simulation of a steel plate girder bridge idealized as a set of beam elements. Two simple bridge models for experimental study have been setup, and carried out moving vehicle test. The base-line model for the damage identification is now on considering by comparing with the experimental results. Theoretical study through numerical simulation even considering the responses contaminated by noises suggests the feasibility of the proposed method for bridge-health monitoring. Observations reveal that not only the suspected damaged member, but also severity of the damage are detectable using the proposed method. It also demonstrates that the vibration data obtained under a low speed vehicle might give a better identification result. Investigations through numerical studies presented in this paper suggest the feasibility of the proposed method for bridge condition assessment. They can provide a method for extending engineering choice in bridge health monitoring. Many tasks remain, however, to make this procedure applicable to practical situations.

本研究的重点是开发一种新的方法，基于振动的桥梁状态筛选在时域中使用移动车辆的桥梁作为致动器的损伤识别技术。直接从单元刚度的变化进行诊断调查是本研究中采用的桥梁状态筛选的基本概念。单元刚度指数（ESI），这表明一个完整的桥梁模型的有限元的抗弯刚度的比例，被用来作为桥梁健康状况的指标。从基于伪静态公式的桥梁-车辆相互作用系统的运动方程中减去ESI控制线性方程。使用Tikhonov正则化方法以及总体最小二乘近似来求解ESI线性方程。通过将钢板梁桥理想化为一组梁单元的数值模拟，验证了损伤识别技术。建立了两座试验研究的简易桥梁模型，并进行了动载试验。通过与试验结果的比较，提出了损伤识别的基线模型。通过数值模拟的理论研究，即使考虑噪声污染的响应表明，所提出的方法的桥梁健康监测的可行性。观测结果表明，不仅可疑的损坏的成员，但也损坏的严重程度是使用所提出的方法检测。在低速行驶状态下获得的振动数据可以得到更好的识别结果。本文通过数值研究进行的调查表明，所提出的桥梁状况评估方法是可行的。为桥梁健康监测中拓宽工程选择提供了一种方法。然而，要使这一程序适用于实际情况，还有许多工作要做。

项目成果

Three-dimensional dynamic analysis for bridge-vehicle interaction with roadway roughness

• DOI: 10.1016/j.compstruc.2004.12.004
• 发表时间: 2005-07
• 期刊: Computers & Structures
• 影响因子: 4.7
• 作者: Chul‐Woo Kim;M. Kawatani;Ki Bong Kim

Moving vehicle as an actuator for vibration-based bridge damage identification

移动车辆作为基于振动的桥梁损伤识别的执行器

• 发表时间: 2006
• 期刊: Proc. of 4^<th> Int. Symposium on Steel Structures (ISSS'06) Vol.1
• 作者: 関田欣治;大村優太;矢後清和他;関田欣治;K.Sekita;金 哲佑;金 哲佑;金 哲佑;吉田 郁政;吉田 郁政;金 哲佑
• 通讯作者: 金 哲佑

Damage identification method for bridges from a pseudostatic formulation of bridge-vehicle interaction system

基于桥-车相互作用系统拟静力公式的桥梁损伤识别方法

• 发表时间: 2006
• 期刊: Proc. of the Third International Conference on Bridge Maintenance, Safety and Management (IABMAS06) (CD-ROM)
• 作者: 関田欣治;大村優太;矢後清和他;関田欣治;K.Sekita;金 哲佑;金 哲佑;金 哲佑;吉田 郁政;吉田 郁政;金 哲佑;金 哲佑
• 通讯作者: 金 哲佑

交通振動を用いた橋梁の損傷推定に関する基礎研究

利用交通振动进行桥梁损伤估算的基础研究

• 发表时间: 2006
• 期刊: 土木学会 応用力学論文集 Vol.9
• 作者: 関田欣治;大村優太;矢後清和他;関田欣治;K.Sekita;金 哲佑;金 哲佑;金 哲佑;吉田 郁政
• 通讯作者: 吉田 郁政

Pseudo-static approach for damage identification of bridges based on coupling vibration with a moving vehicle

• DOI: 10.1080/15732470701270082
• 发表时间: 2008-01-01
• 期刊: STRUCTURE AND INFRASTRUCTURE ENGINEERING
• 影响因子: 3.7
• 作者: Kim, Chul-Woo;Kawatani, Mitsuo
• 通讯作者: Kawatani, Mitsuo