[1]戚春香,闫菊菊,张润峰,等.基于多模态参数的滑行道桥损伤识别[J].长安大学学报(自然科学版),2025,45(6):184-199.
　QI Chun-xiang,YAN Ju-ju,ZHANG Run-feng,et al.Damage identification of taxiway bridge based on modal parameters[J].Journal of Chang’an University (Natural Science Edition),2025,45(6):184-199.
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基于多模态参数的滑行道桥损伤识别()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第45卷
期数:
2025年6期
页码:
184-199
栏目:
桥梁智能运维与防灾减灾
出版日期:
2025-11-30

文章信息/Info

Title:
Damage identification of taxiway bridge based on modal parameters
文章编号:
1671-8879(2025)06-0184-16
作者:
戚春香1; 闫菊菊1; 张润峰1; 丁丛丛2; 王强1
(1. 中国民航大学 交通科学与工程学院,天津 300300; 2. 中航勘察设计研究院有限公司,北京 100089)
Author(s):
QI Chun-xiang1;  YAN Ju-ju1;  ZHANG Run-feng1;  DING Cong-cong2;  WANG Qiang1
(1. School of Transportation Science and Engineering, Civil Aviation University of China, Tianjin 300300, China; 2. AVIC Institue of Geotechnical Engineering Co., Ltd., Beijing 100089, China)
关键词:
桥梁工程;  滑行道桥;  损伤识别;  模态参数;  损伤位置;  损伤程度
Keywords:
bridge engineering;  taxiway bridge;  damage identification;  modal parameters;  damage location;  damage extent
分类号:
U416.217
文献标志码:
A
摘要:
针对滑行道桥区别常见公路的特殊宽跨比,对实现精准评估滑行道桥损伤位置与损伤程度进行深入研究。基于多模态参数的滑行道桥损伤结构,建立简支箱梁滑行道桥有限元模型,通过设置不同程度的损伤工况,并选取固有频率、位移模态、应变模态及应变模态差4种参数,对简支箱梁滑行道桥进行损伤识别研究。研究结果表明:应用滑行道桥的固有频率可以对结构进行初步损伤识别; 利用位移模态指标对桥梁横向损伤进行识别时,在损伤位置不变的情况下,箱梁式滑行道桥的1阶横向位移振型差与损伤程度呈显著正相关,而高阶数的位移振型并不能有效表征损伤位置; 利用应变模态与应变模态差指标对桥梁横向损伤进行识别时,综合多阶振型均可对多处损伤进行准确识别,结构应变模态差在损伤单元处突变更显著,该参数是滑行道桥损伤位置识别的最优指标; 对于出现中部单一损伤的滑行道桥,其应变模态相对值随损伤程度的增加而增大,其中1阶应变模态对于损伤程度的敏感性最高,而高阶应变模态相对值与损伤程度的规律性基本一致。研究结果可为滑行道桥的损伤识别提供评估依据。
Abstract:
In view of the special width-span ratio of taxiway bridges, which distinguishes them from regular roadways, an in-depth study was conducted on the precise methods for assessing the location and extent of damage to taxiway bridges. Based on the modal parameters for taxiway bridge structural damage identification, a finite element model of a simply supported box girder taxiway bridge was established. Four parameters, such as natural frequency, displacement mode, strain mode, and strain mode difference, were selected to identify damage in the simply supported box girder taxiway bridge under different simulated damage conditions. The research results show that the natural frequency of taxiway bridges enables initial damage identification. When using the displacement mode index to identify transverse bridge damage with the damage location fixed, the first-order transverse displacement mode difference of the box girder taxiway bridge exhibits a significant positive correlation with the damage degree. However, higher-order displacement modes cannot effectively characterize the damage location. When employing the strain mode and strain mode difference indices, combining multi-order vibration modes allows for accurate identification of transverse bridge damage. Notably, the structural strain mode difference exhibits a more significant mutation at the damaged unit, making this parameter as the optimal index for identifying damage locations. For taxiway bridges with a single mid-span damage, the relative value of the strain mode increases with the damage degree. The first-order strain mode shows the highest sensitivity to the damage degree, while the relative values of higher-order strain modes basically conform to the variation regularity of the damage degree. The research results can provide an evaluation basis for the damage identification of taxiway bridges.5 tabs, 22 figs, 34 refs.

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备注/Memo

备注/Memo:
收稿日期:2025-05-25
基金项目:民航机场安全与运行工程技术研究中心工程开放基金项目(KFKT2021-02)
作者简介:戚春香(1980-),女,河北武强人,副教授,工学博士,E-mail:cxqi@cauc.edu.cn。
通信作者:张润峰(1979-),男,河北宁晋人,讲师,工学博士,E-mail:rfzhang@cauc.edu.cn。
更新日期/Last Update: 2025-12-20