A Computational Model for Prestressed Concrete Hollow-Core Slab Under Natural Fire
Source abstract
Abstract
Abstract Performance-based approach, introducing a new two-phase computational model for determining the response of prestressed hollow-core concrete slab exposed to natural fire including heating and cooling phase, is presented. Firstly, the two-dimensional coupled hygro-thermo-chemical model is used to determine time dependent temperature and moisture field in the characteristic cross-section of the concrete hollow-core slab during fire. In addition, the influence of opening on the temperature distribution over prestressed hollow-core concrete slab is accounted for. Secondly, stress–strain state of prestressed concrete hollow-core slab is determined with a newly developed one-dimensional geometrical and material non-linear model, which includes a slip between concrete and tendon. Temperature dependent mechanical properties of concrete, tendon and bond stiffness are accounted for in the model. Model validation showed that the presented two-phase computational model is suitable for the analysis of prestressed hollow-core concrete slab exposed to natural fire. Furthermore, parametric studies revealed that heat exchange between the concrete section and the opening has a significant influence on the development of temperatures in the slab, particularly in the cooling phase, and consequently also on the development of slab displacements. In addition, it was identified that accounting for the slip between concrete and tendon enables the determination of the bond stress distribution and evaluation of the load bearing capacity of the contact.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fire effects on concrete materials · Fire dynamics and safety research · Structural Response to Dynamic Loads
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. Aguado, J., Espinos, A., Hospitaler, A., & Romero, M. (2012). Influence of reinforcement arrangement in flexural fire behavior of hollow core slabs. Fire Safety Journal, 53, 72–84.10.1016/j.firesaf.2012.06.015 ↗
2. Aguado, J., Albero, V., Espinos, A., Hospitaler, A., & Romero, M. (2016). A 3D finite element model for predicting the fire behaviour of hollow-core slabs. Engineering Structures, 108, 12–27.10.1016/j.engstruct.2015.11.008 ↗
3. Anderberg, Y., & Thelandersson, S. (1976). Stress and deformation characteristics of concrete at high temperatures. Experimental investigation and material behaviour model. Sweden: Lund Institute of Technology.
4. Bailey, C., & Lennon, T. (2008). Full-scale fire tests on hollowcore floors. The Structural Engineer, 86, 33–39.
5. Bratina, S., Planinc, I., Saje, M., & Turk, G. (2003). Non-linear fire-resistance analysis of reinforced concrete beams. Structural Engineering and Mechanics, 16, 695–712.10.12989/sem.2003.16.6.695 ↗
6. Bratina, S., Saje, M., & Planinc, I. (2004). Materially and geometrically non-linear analysis of reinforced concrete planar frames. International Journal of Solids and Structures, 41, 7181–7207.10.1016/j.ijsolstr.2004.06.004 ↗
7. Bratina, S., Saje, M., & Planinc, I. (2007). The effects of different strain contributions on the response of RC beams in fire. Engineering Structures, 29, 418–430.10.1016/j.engstruct.2006.05.008 ↗
8. CEN. (2004). Eurocode 1—action on structures—part 1-2: general actions—actions on structures exposed to fire. EN 1991-1-2, Brussels, Belgium
9. CEN. (2005). EN 1992-1-2, Eurocode 2-Design of concrete structures—Part 1–2: General rules—Structural fire design. Belgium: CEN.
10. Cengel, Y. A. (1998). Heat transfer: A practical approach. New York: WCB/McGraw-Hill.
11. Chang, J., Buchanan, A. H., Dhakal, R. P., & Moss, P. J. (2008). Hollow-core concrete slabs exposed to fire. Fire and Materials, 32(6), 321–331.10.1002/fam.970 ↗
12. Davie, C. T., Pearce, C. J., & Bićanić, N. (2006). Coupled heat and moisture transport in concrete at elevated temperatures-effects of capillary pressure and adsorbed water. Numerical Heat Transfer, 49, 8.
13. Diederichs, U., & Schneider, U. (1981). Bond strength at high temperatures. Magazine of Concrete Research, 33(115), 75–84.10.1680/macr.1981.33.115.75 ↗
14. Ellobody, E. (2014). Advanced analysis of prestressed hollow core concrete slabs exposed to different fires. Advances in Structural Engineering, 17(9), 1281–1298.10.1260/1369-4332.17.9.1281 ↗
15. Harmathy, T. (1967). A comprehensive creep model. Journal of Basic Engineering, 89(3), 496–502.10.1115/1.3609648 ↗
16. Hozjan, T. (2009). Nonlinear analysis of composite planar structures exposed to fire. Doctoral Thesis (in Slovene). Ljubljana: University of Ljubljana, Faculty of Civil and Geodetic Engineering.
17. Hozjan, T., Saje, M., Srpčič, S., & Planinc, I. (2010). Fire analysis of steel-concrete composite beam with interlayer slip. Computers & Structures, 89, 189–200.10.1016/j.compstruc.2010.09.004 ↗
18. Keuser, M., & Mehlhorn, G. (1983). Bond between prestressed steel and concrete—computer analysis using ADINA. Computers & Structures, 17(5–6), 669–676.
19. Khalaf, J., & Huang, Z. (2016). Analysis of the bond behaviour between prestressed strands and concrete in fire. Construction and Building Materials, 128, 12–23.10.1016/j.conbuildmat.2016.10.016 ↗
20. Kodur, V. K. R., & Shakya, A. M. (2014). Modeling the response of precast, prestressed concrete hollow-core slabs exposed to fire. PCI Journal Paper, 59(3), 78–94.10.15554/pcij.06012014.78.94 ↗
21. Kolšek, J., Planinc, I., Saje, M., & Hozjan, T. (2014). The fire analysis of a steel-concrete side-plated beam. Finite Elements in Analysis and Design, 74, 93–110.10.1016/j.finel.2013.06.001 ↗
22. Markovič, M., Krauberger, N., Saje, M., Planinc, I., & Bratina, S. (2013). Non-linear analysis of pre-tensioned concrete planar beams. Engineering Structures, 46, 279–293.10.1016/j.engstruct.2012.08.004 ↗
23. Min, J. L., Moss, P. J., Dhakal, R. P., & Buchanan, A. H. (2010). Modelling the fire resistance of prestressed concrete floors using multi-spring connection elements. In: Proc., 8th international conference on structures in fire Sif ’10.
24. Park, M. K., Lee, D. H., Han, S. J., & Kim, K. S. (2019). Web-shear capacity of thick precast prestressed hollow-core slab units produced by extrusion method. International Journal of Concrete Structures and Materials, 13(1), 7.10.1186/s40069-018-0288-x ↗
25. Rabczuk, T., & Belytschko, T. (2006). Application of particle methods to static fracture of reinforced concrete structures. International Journal of Fracture, 137, 19–49.10.1007/s10704-005-3075-z ↗
26. Reissner, E. (1972). On one-dimensional finite-strain beam theory: The plane problem. Zeitschrift fur angewandte Mathematik und Physik, 23(5), 795–804.10.1007/BF01602645 ↗
27. Shakya, A. M., & Kodur, V. K. R. (2015). Response of precast prestressed concrete hollowcore slabs under fire conditions. Engineering Structures, 87, 126–138.10.1016/j.engstruct.2015.01.018 ↗
28. Shakya, A. M., & Kodur, V. K. R. (2017). Modeling shear failure in precast prestressed concrete hollowcore slabs under fire conditions. Journal of Structural Engineering, 143(9), 400–410.10.1061/(ASCE)ST.1943-541X.0001822 ↗
29. Tufail, M., Shahzada, K., Gencturk, B., & Wei, J. (2017). Effect of elevated temperature on mechanical properties of limestone, quartzite and granite concrete. International Journal of Concrete Structures and Materials, 11(1), 17–28.10.1007/s40069-016-0175-2 ↗
30. Wei, Y., Zhang, L., Au, F., Li, J., & Tsang, N. (2016). Thermal creep and relaxation of prestressing steel. Construction and Building Materials, 128, 118–127.10.1016/j.conbuildmat.2016.10.068 ↗