Numerical Analysis of Thermal Stress in Concrete Filled Steel Tube

DOI

10.2991/978-94-6463-856-1_32How to use a DOI?

Keywords

Thermal stress; Hydration heat; Displacement; Concrete filled steel tube; Early cracks

Abstract

This study investigates the thermal stress and displacement in concrete filled steel tube (CFST) induced by hydration heat through numerical simulation. The temperature field, stress distribution and displacement caused by cement hydration are systematically examined. The effect of ambient temperature on the response of CFST is studied. The results showed that the temperature of CFST is decreased radially because of the heat exchange between the concrete-steel-air interface. With the decrease of ambient temperature, the temperature of the center of the CFST decreases. The heat dissipation is related to the temperature difference between the CFST and the air. The heat flux speed between concrete and steel tube is higher than that of steel tube and air. The thermal dissipation rate at the steel-air interface varies proportionally with the ambient temperature gradient. Ambient temperature exerts significant influence on displacement distribution induced by hydration heat in CFST. The hydration-induced displacement around the outer boundary of the CFST decreases with the decrease of the ambient temperature. The thermal-mechanical interaction demonstrates that displacement magnitude correlates directly with both hydration heat intensity and environmental thermal gradient.

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  - Keqi Huang
AU  - Hexin Jin
PY  - 2025
DA  - 2025/09/22
TI  - Numerical Analysis of Thermal Stress in Concrete Filled Steel Tube
BT  - Proceedings of the 2025 International Conference on Resilient City and Safety Engineering (ICRCSE 2025)
PB  - Atlantis Press
SP  - 343
EP  - 351
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-856-1_32
DO  - 10.2991/978-94-6463-856-1_32
ID  - Huang2025
ER  -