Title:
Numerical Analysis of Tendon Temperature Considering Thermal Contact Conductance
Author(s):
Kwanwoo Yi and Thomas H.-K. Kang
Publication:
Structural Journal
Volume:
122
Issue:
4
Appears on pages(s):
97-111
Keywords:
concrete cover thickness; fire-resistance performance; numerical analysis; post-tensioned (PT) slab; tendon configuration; thermal contact conductance
DOI:
10.14359/51745642
Date:
7/1/2025
Abstract:
This study used finite element analysis to examine how tendon
configuration affects the temperature behavior of post-tensioned
concrete structures during fire exposure. The thermal behavior
of various tendon configurations was modeled, showing good
agreement with experimental data. Parametric studies found that
unbonded single-strand tendons (S) and prestressing (pretensioned)
strands (R) had lower thermal resistance than bonded
post-tensioned tendons (B), unbonded post-tensioned tendons (U),
and grouted extruded-strand tendons (G). The S and R specimens
stayed at or below the critical temperature for one-way slabs, validating current safety codes. The B, U, and G specimens remained
well below critical temperatures, indicating that a thinner concrete
cover might suffice. These findings highlight the need to consider
tendon configuration in structural fire-resistance evaluation and
incorporate heat resistance assessment to ensure the safety and
efficiency of prestressed concrete structures during fires.
Related References:
1. Gales, J.; Bisby, L. A.; and Gillie, M., “Unbonded Post Tensioned Concrete in Fire: A Review of Data from Furnace Tests and Real Fires,” Fire Safety Journal, V. 46, No. 4, May 2011, pp. 151-163. doi: 10.1016/j.firesaf.2011.01.004
2. Jeyashree, T. M.; Kannan Rajkumar, P. R.; and Satyanarayanan, K. S., “Developments and Research on Fire Response Behaviour of Prestressed Concrete Members – A Review,” Journal of Building Engineering, V. 57, Oct. 2022, Article No. 104797. doi: 10.1016/j.jobe.2022.104797
3. Zhang, G.; Kodur, V.; Xie, J.; He, S.; and Hou, W., “Behavior of Prestressed Concrete Box Bridge Girders under Hydrocarbon Fire Condition,” Procedia Engineering, V. 210, 2017, pp. 449-455.
4. Cai, B.; Li, B.; and Fu, F., “Finite Element Analysis and Calculation Method of Residual Flexural Capacity of Post-fire RC Beams,” International Journal of Concrete Structures and Materials, V. 14, No. 1, 2020, Article No. 58.
5. Wang, Z.; Chen, M.; and Liao, Y., “Analysis of Fire Resistance of Prestressed Concrete T-Beam Based on ABAQUS Numerical Simulation,” Applied Sciences, V. 13, No. 8, Apr. 2023, Article No. 4683. doi: 10.3390/app13084683
6. Izzet, A. F.; Oukaili, N.; and Harbi, N. A., “Post-Fire Serviceability and Residual Strength of Composite Post-tensioned Concrete T-Beams,” SN Applied Sciences, V. 3, No. 2, Feb. 2021, Article No. 158. doi: 10.1007/s42452-020-04116-9
7. Hekmet, H. M., and Izzet, A. F., “Numerical Analysis of Segmental Post Tensioned Concrete Beams Exposed to High Fire Temperature,” Engineering, Technology & Applied Science Research, V. 9, No. 5, Oct. 2019, pp. 4759-4768. doi: 10.48084/etasr.3059
8. Park, S., “Fire Behavior of Post-Tensioned Concrete One-Way Members with Different Tendon Configuration,” master’s thesis, Seoul National University, Seoul, South Korea, 2022.
9. Park, S., and Kang, T. H.-K., “Experimental and Numerical Study of Fire Endurance of Bonded Posttensioned Concrete Slabs,” Journal of Structural Engineering, ASCE, V. 149, No. 12, Dec. 2023, p. 04023185. doi: 10.1061/JSENDH.STENG-12384
10. Yi, K., and Kang, T., “Review on Numerical Analysis of Fire Performance in RC, PSC, and PT Concrete Structures,” Proceedings of the 2023 World Congress on Advances in Structural Engineering and Mechanics (ASEM23), Seoul, South Korea, Aug. 2023, 4 pp.
11. Wosatko, A.; Pamin, J.; and Polak, M. A., “Application of Damage–Plasticity Models in Finite Element Analysis of Punching Shear,” Computers & Structures, V. 151, Apr. 2015, pp. 73-85. doi: 10.1016/j.compstruc.2015.01.008
12. Genikomsou, A. S., and Polak, M. A., “Finite Element Analysis of Punching Shear of Concrete Slabs Using Damaged Plasticity Model in ABAQUS,” Engineering Structures, V. 98, Sept. 2015, pp. 38-48. doi: 10.1016/j.engstruct.2015.04.016
13. Al-Hamd, R. K. S.; Gillie, M.; Cunningham, L. S.; Warren, H.; and Albostami, A. S., “Novel Shearhead Reinforcement for Slab-Column Connections Subject to Eccentric Load and Fire,” Archives of Civil and Mechanical Engineering, V. 19, No. 2, Mar. 2019, pp. 503-524. doi: 10.1016/j.acme.2018.12.011
14. Al Hamd, R. K. S.; Gillie, M.; Warren, H.; Torelli, G.; Stratford, T.; and Wang, Y., “The Effect of Load-induced Thermal Strain on Flat Slab Behaviour at Elevated Temperatures,” Fire Safety Journal, V. 97, Apr. 2018, pp. 12-18. doi: 10.1016/j.firesaf.2018.02.004
15. Al-Hamd, R. K. S.; Gillie, M.; Mohamad, S. A.; and Cunningham, L. S., “Influence of Loading Ratio on Flat Slab Connections at Elevated Temperature: A Numerical Study,” Frontiers of Structural and Civil Engineering, V. 14, No. 3, June 2020, pp. 664-674. doi: 10.1007/s11709-020-0620-9
16. Cooper, M. G.; Mikic, B. B.; and Yovanovich, M. M., “Thermal Contact Conductance,” International Journal of Heat and Mass Transfer, V. 12, No. 3, Mar. 1969, pp. 279-300. doi: 10.1016/0017-9310(69)90011-8
17. Negus, K. J., and Yovanovich, M. M., “Correlation of the Gap Conductancg Integral for Conforming Rough Surfaces,” Journal of Thermophysics and Heat Transfer, V. 2, No. 3, July 1988, pp. 279-281. doi: 10.2514/3.56224
18. Ghojel, J., “Experimental and Analytical Technique for Estimating Interface Thermal Conductance in Composite Structural Elements under Simulated Fire Conditions,” Experimental Thermal and Fluid Science, V. 28, No. 4, Mar. 2004, pp. 347-354. doi: 10.1016/S0894-1777(03)00113-4
19. Wahid, S. M. S., and Madhusudana, C. V., “Gap Conductance in Contact Heat Transfer,” International Journal of Heat and Mass Transfer, V. 43, No. 24, Dec. 2000, pp. 4483-4487. doi: 10.1016/S0017-9310(00)00071-5
20. Park, S., and Kang, T. H.-K., “Behavior of Unbonded Post-Tensioned Concrete Slabs Exposed to Fire,” ACI Structural Journal, V. 120, No. 3, May 2023, pp. 217-229.
21. Aalilija, A.; Gandin, C.-A.; and Hachem, E., “A Simple and Efficient Numerical Model for Thermal Contact Resistance Based on Diffuse Interface Immersed Boundary Method,” International Journal of Thermal Sciences, V. 166, Aug. 2021, Article No. 106817. doi: 10.1016/j.ijthermalsci.2020.106817
22. Espinos, A.; Romero, M. L.; and Hospitaler, A., “Advanced Model for Predicting the Fire Response of Concrete Filled Tubular Columns,” Journal of Constructional Steel Research, V. 66, No. 8-9, Aug.-Sept. 2010, pp. 1030-1046. doi: 10.1016/j.jcsr.2010.03.002
23. Tao, Z., and Ghannam, M., “Heat Transfer in Concrete-filled Carbon and Stainless Steel Tubes Exposed to Fire,” Fire Safety Journal, V. 61, Oct. 2013, pp. 1-11. doi: 10.1016/j.firesaf.2013.07.004
24. Zhou, K., and Han, L.-H., “Modelling the Behaviour of Concrete-
Encased Concrete-Filled Steel Tube (CFST) Columns Subjected to Full-Range Fire,” Engineering Structures, V. 183, Mar. 2019, pp. 265-280. doi: 10.1016/j.engstruct.2018.12.100
25. Mago, N.; Hicks, S.; and Simms, W. I., “Sequentially Coupled
Thermal-Stress Analysis of a New Steel-Concrete Composite Slab under Fire,” 2014 Dassault Systèmes SIMULIA Community Conference, Providence, RI, May 2014, pp. 247-260.
26. EN 1992-1-2:2004, “Eurocode 2: Design of Concrete Structures - Part 1-2: General Rules - Structural Fire Design,” European Committee for Standardization, Brussels, Belgium, 2004, 99 pp.
27. EN 1993-1-2:2005, “Eurocode 3: Design of Steel Structures - Part 1-2: General Rules - Structural Fire Design,” European Committee for Standardization, Brussels, Belgium, 2005, 81 pp.
28. ISO 834-1:1999, “Fire-Resistance Tests — Elements of Building Construction — Part 1: General Requirements,” International Organization for Standardization, Geneva, Switzerland, 1999, 25 pp.
29. Bo, S., “Finite Element Simulation of Fire Induced Spalling in High Strength Concrete Slabs,” master’s thesis, Lehigh University, Bethlehem, PA, 2011, 118 pp.
30. Ren, P.; Hou, X.; Kodur, V. K. R.; Ge, C.; Zhao, Y.; and Zhou, W., “Modeling the Fire Response of Reactive Powder Concrete Beams with Due Consideration to Explosive Spalling,” Construction and Building Materials, V. 301, Sept. 2021, Article No. 124094. doi: 10.1016/j.conbuildmat.2021.124094
31. Kodur, V., and Banerji, S., “Modeling the Fire-induced Spalling in Concrete Structures Incorporating Hydro-Thermo-Mechanical Stresses,” Cement and Concrete Composites, V. 117, Mar. 2021, Article No. 103902. doi: 10.1016/j.cemconcomp.2020.103902
32. Majorana, C. E.; Salomoni, V. A.; Mazzucco, G.; and Khoury, G. A., “An Approach for Modelling Concrete Spalling in Finite Strains,” Mathematics and Computers in Simulation, V. 80, No. 8, Apr. 2010, pp. 1694-1712. doi: 10.1016/j.matcom.2009.05.011
33. Dassault Systèmes, “ABAQUS Analysis User’s Manual (Version 6.6),” Vélizy-Villacoublay, France, 2023.