Measurement and Analysis on Early Hydration Heat of Long-Span Composite Girder Bridge with Corrugated Steel Webs
- DOI
- 10.2991/978-94-6463-793-9_26How to use a DOI?
- Keywords
- composite girder with corrugated steel webs; hydration heat; temperature effect; temperature field; early-stage cracking
- Abstract
To prevent early cracking of concrete during the construction period of long-span composite girder bridges with corrugated steel webs, the influence of concrete hydration heat on early stress and temperature fields of structures was studied through on-site testing. A finite element analysis model was used to analyze the influence of cement dosage, molding temperature and ambient temperature on the temperature field and temperature stress. Results indicate that for composite beam bridges with corrugated steel webs, peak base plate temperatures occur 20-28 hours after pouring, with a maximum inner-surface-to-surface temperature difference of approximately 24℃. To mitigate early hydration effects in composite girder bridges with corrugated steel webs, it is recommended to optimize concrete mixtures or reduce cement dosage while using low-hydration-heat cement. Additionally, controlling molding temperature within 5~15℃ during winter construction can help manage hydration heat and minimize early cracking risks.
- 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.
Cite this article
TY - CONF AU - Jiaxiang Zhang AU - Duo Liu AU - Jue Hou AU - Wenqin Deng AU - Jiandong Zhang PY - 2025 DA - 2025/07/28 TI - Measurement and Analysis on Early Hydration Heat of Long-Span Composite Girder Bridge with Corrugated Steel Webs BT - Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025) PB - Atlantis Press SP - 284 EP - 296 SN - 2589-4943 UR - https://doi.org/10.2991/978-94-6463-793-9_26 DO - 10.2991/978-94-6463-793-9_26 ID - Zhang2025 ER -