Frequency modification of continuous beam bridge based on co-integration analysis considering the effect of temperature and humidity
Abstract
The variation of the temperature and humidity significantly affects the modal parameters of the structure, and the effect and the quantitative statistics of single environmental factors such as temperature on the frequency of bridge are intensively studied, but the study on the mechanism and the effective model considering the comprehensive effect of multi-environmental factors is relatively rare. The principle and analysis method of co-integration is introduced, and the frequency-modified method based on co-integration is presented. Through the monitoring of a three-span concrete bridge model in the natural environment, the effective monitoring data are analyzed to establish a long-term equilibrium model about “frequency–temperature–humidity” based on co-integration theory. The experimental results indicate that the model has a better fitting ability and accuracy, and it is can be used to predict the variation trend of frequency. Based on the mathematical model of co-integration analysis, the modified frequency model considering multi-environmental factors is proposed, which can eliminate the comprehensive effect of temperature and humidity on frequency, and the variation of dynamic characteristics due to the internal causes of structure is revealed. The extracted sequence can provide effective information for further safety assessment and damage detection of bridge.
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A frequency-modified method for continuous beam bridges can eliminate the effects of humidity and temperature on structural responses.
“The proposed technique can eliminate the effects of humidity and temperature on structural responses.”
From Effects of Environmental and Operational Conditions on Structural Health Monitoring and Non-Destructive Testing: A Systematic Review (2023) · cites this paper as [194]
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- Authors
- He, H., Wang, W., & Zhang, X.
- Affiliations
- Beijing University of Technology (CN)
- Corresponding author
- He, Haoxiang
- Venue
- Structural Health Monitoring
- Publisher
- SAGE Publications
- Published
- 2018-02-19
- Volume
- 18
- Issue
- 2
- Pages
- 376-389
- ISSN
- 1475-9217 (ISSN-L)
- 1741-3168
- OpenAlex
- W2791762339
- Cited by
- 35
- References
- 29
- Citations by year
- 2026: 1 · 2025: 6 · 2024: 5 · 2023: 7 · 2022: 7 · 2021: 5 · 2020: 3 · 2018: 1
- FWCI
- 2.02
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Structural Health Monitoring (publishedVersion)
- Topics
- Physical Sciences › Engineering › Civil and Structural Engineering › Structural Health Monitoring Techniques
- Physical Sciences › Engineering › Civil and Structural Engineering › Structural Engineering and Vibration Analysis
- Physical Sciences › Engineering › Civil and Structural Engineering › Structural Engineering and Materials Analysis
- Keywords
- bridge natural frequency, temperature effects, humidity effects, modal parameters, environmental factors, damage detection, structural safety assessment
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