Study on Vehicle-Induced Dynamic Response under Seasonal Temperature Variations

DOI

10.2991/978-94-6463-650-5_40How to use a DOI?

Keywords

Seasonal Temperature Variation; Joint Width; Vehicle-Induced Joint Passage; Dynamic Deflection; Acceleration

Abstract

Although research on vehicle-bridge coupling during passage over expansion joints is relatively mature, the impact of seasonal temperature variations on the dynamic response of these joints has not been sufficiently explored. To address this gap, this study conducted a year-long real-time monitoring of the dynamic response of expansion joints induced by vehicle passage on a specific bridge. By analyzing the monitoring data alongside the bridge's thermal expansion coefficient, the study identified the changes in main girder and expansion joint widths due to seasonal temperature shifts, as well as the differences in equivalent force distribution coefficients under varying joint widths. Results indicated that seasonal temperature changes had minimal impact on vertical acceleration responses. However, the dynamic deflection responses exhibited periodic fluctuations with a lag effect. The deflection changes were highly synchronous across different measurement points, with mid-span deflection fluctuations being more pronounced than at the ends. In summer, the main girder lengthens, reducing the joint width to a minimum, resulting in the lowest equivalent force distribution coefficients and dynamic deflection amplitudes; conversely, winter saw maximum dynamic deflection amplitudes. Understanding the contribution of seasonal temperatures to dynamic responses is crucial for accurately assessing changes in bridge expansion joint responses.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Qi Zhang
AU  - Xiaomin Huang
PY  - 2025
DA  - 2025/01/31
TI  - Study on Vehicle-Induced Dynamic Response under Seasonal Temperature Variations
BT  - Proceedings of the 2024 7th International Conference on Civil Architecture, Hydropower and Engineering Management (CAHEM 2024)
PB  - Atlantis Press
SP  - 407
EP  - 420
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-650-5_40
DO  - 10.2991/978-94-6463-650-5_40
ID  - Zhang2025
ER  -