Numerical Simulation Strategy of Reinforced Concrete Tunnel Bearing Members in Fire

Viktor Gribniak; Darius Bačinskas; Gintaris Kaklauskas

Numerical Simulation Strategy of Reinforced Concrete Tunnel Bearing Members in Fire

Authors

Viktor Gribniak Department of Bridges and Special Structures, Vilnius Gediminas Technical University
Darius Bačinskas Department of Bridges and Special Structures, Vilnius Gediminas Technical University
Gintaris Kaklauskas Department of Bridges and Special Structures, Vilnius Gediminas Technical University

Keywords:

thermo-mechanical numerical simulation, reinforced concrete, non-linear finite element analysis, thermo-mechanical tests, constitutive models of concrete and steel.

Abstract

Reinforced concrete structures subjected to fire will generally experience a complex behaviour. This paper presents a strategy of numerical simulation of reinforced concrete members exposed to high temperatures and subjected to external loading. Finite element modelling of full load-deflection behaviour of experimental reinforced concrete beams reported in the literature has been carried out. A constitutive model based on Eurocode 2 specifications has been used in the analysis. Comparison of numerical simulation and test results has shown a reasonable accuracy.

References

FELICETTI, R.; GAMBAROVA, P. G. Meda A. Expertise and Assessment of Structures after Fire. In: Report in the Meeting of fib Task Group 4.3.2 Guidelines for the Structural Design of Concrete Buildings Exposed to Fire. Brussels: CEN TC, 2002, p. 89–99.

KAKLAUSKAS, G.; GHABOUSSI, J. Stress-Strain Relations for Cracked Tensile Concrete from RC Beam Tests. ASCE Journal of Structural Engineering, Vol 127, Issue 1, p. 64–73.

BAŽANT, Z. P.; KAPLAN, M. F. Concrete at High Temperatures: Material Properties and Mathematical Models. New York: Longman Group Lt., 1996. 424 p.

KAKLAUSKAS, G. Flexural Layered Deformational model of Reinforced Concrete Members. Magazine of Concrete Research, Vol 56, No 10, p. 575–584.

BAČINSKAS, D.; KAKLAUSKAS, G.; GEDA, E. FE Software ATENA Applications to Non-Linear Analysis of RC Beams Subjected to High Temperatures. Journal of Civil Engineering and Management, Vol X, Suppl 1, p. 11–18.

MSC.Marc. Vol. A: Theory and User Information, Version 2003. Redwood City, California: MSC.Software Corp., 2003. 748 p.

prENV 1991-1-2. Eurocode 2: Design of Concrete Structures - Part 1.2: General Rules – Structural Fire Design. Brussels: CEN, 2001. 102 p.

SHI, X.; TAN, T.-H.; TAN, K.-H.; GUO, Z. Effect of Force- Temperature Paths on Behaviours of Reinforced Concrete Flexural Members. Journal of Structural Engineering, Vol 128, No 3, p. 365–373.

PURKISS, J. A. Fire Safety Engineering Design of Structures. Oxford: Butterworth Heinemann, 1996. 342 p.