Comparative study of hinge joint damage of hollow slab bridge based on modal parameter index

QU Chunxu; GONG Yachao; LI Hongnan; TAN Yanbin; BAI Fenglong; CHEN Dongsheng; MA Biao; LIU Tao; LIU Duo; YI Tinghua

doi:10.11835/j.issn.2096-6717.2022.012

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Comparative study of hinge joint damage of hollow slab bridge based on modal parameter index

Civil Engineering | 更新时间：2023-06-25

- Comparative study of hinge joint damage of hollow slab bridge based on modal parameter index
- Journal of Civil and Environmental Engineering Vol. 45, Issue 1, Pages: 167-177(2023)
- 作者机构：
  
  1.大连理工大学，土木工程学院，辽宁大连 116024
  1.大连理工大学，桥梁与隧道技术国家地方联合工程实验室，辽宁大连 116024
  3.大连市勘察测绘研究院集团有限公司，辽宁大连 116021
  4.安徽省建筑科学研究设计院，合肥 230031
  5.中国瑞林工程技术股份有限公司，合肥 330031
  6.山东建勘集团有限公司，济南 250031
  7.苏交科集团股份有限公司，南京 211112
- 作者简介：
  
  QU Chunxu (1984- ), PhD, associate professor, doctorial supervisor, main research interests: bridge structure health monitoring and modal parameter identification, E-mail: quchunxu@dlut.edu.cn.
- 基金信息：
  
  National Natural Science Foundation of China(52078100);Scientific Research Fund of Institute of Engineering Mechanics of China Earthquake Administration(2020D32);Scientific Research Fund of Key Laboratory of Large Structure Health Monitoring and Control of Hebei Provence(KLLSHMC1908);Scientific Research Fund of Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education of Southeast University(CPCSME2018-04);Scientific Research Founding of Key Laboratory of Building Collapse Mechanism and Disaster Prevention of China Earthquake Administration(FZ211107)
- DOI：10.11835/j.issn.2096-6717.2022.012
  CLC： U448.21;U446.3
- Received：09 October 2021，
  
  Published：25 February 2023
- 稿件说明：
移动端阅览
QU Chunxu, GONG Yachao, LI Hongnan, et al. Comparative study of hinge joint damage of hollow slab bridge based on modal parameter index[J]. Journal of Civil and Environmental Engineering, 2023, 45(1): 167-177.
DOI：

QU Chunxu, GONG Yachao, LI Hongnan, et al. Comparative study of hinge joint damage of hollow slab bridge based on modal parameter index[J]. Journal of Civil and Environmental Engineering, 2023, 45(1): 167-177. DOI： 10.11835/j.issn.2096-6717.2022.012.

摘要

模态参数反映结构动力特性，基于模态参数的损伤指标能反映结构动力特性的变化，可用于桥梁结构损伤识别。以模态参数构成的损伤指标众多，每个损伤指标通过自身的变化来识别损伤，但难以用统一标准对不同损伤指标的识别效果进行量化对比。针对空心板梁桥的铰缝损伤，提出一致性量化指标，从数据层面定量描述指标的损伤指示效果，便于各类损伤指标的对比和应用。首先根据模态参数损伤指标，构造一致性量化指标，定量描述不同损伤指标的识别效果；然后建立空心板梁桥及其铰缝损伤的有限元实体模型，模拟3种不同铰缝位置处的损伤工况，对每处损伤分别设置6种不同损伤程度；最后应用一致性量化指标对比各损伤指标的识别性能，总结不同工况下各损伤指标识别效果的变化规律。分析表明，一致性量化指标能够在不同工况下定量描述不同损伤指标的识别效果。

Abstract

Modal parameters reflect structural dynamic properties

and damage indexes based on modal parameters can reflect changes in structural dynamic properties and can be used for bridge structural damage identification. There are many damage indexes composed of modal parameters

and each damage index identifies damage by its own changes

but it is difficult to quantify and compare the identification effect of different damage indexes by a unified standard. In view of the hinge joint damage of hollow slab bridge

this paper proposes a consistency quantification index to quantitatively describe the indication effect of damage indexes for hinge joint damage of hollow slab bridge

which is convenient for the comparison and application of various damage indexes. First

according to the damage indexes of moda parameters

the consistency quantification indexes are constructed to quantitatively describe the identification effect of different damage indexes. Then

a solid model of hollow slab bridge and hinge joint damage is established based on ANSYS

the damage conditions at three different hinge joint locations are simulated

and six different damage levels are set for each damage location. Finally

the consistency quantification index is applied to compare the identification effects of each damage index

and the change law of the identification effect of each damage index under different damage conditions is summarized. The analysis shows that the consistency quantification index can quantitatively describe the identification effect of different damage indexes under different damage conditions.

关键词

Keywords

references

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