Abstract: Considerations presented in this paper focus on the assessment of steel truss fire safety with the use of the system reliability analysis. In calculations of capacity and the effect of actions, random variation in the Young's modulus, yield strength and the cross-sectional areas of rods are taken into account. The aim of the analysis is to monitor the reliability index in the consecutive minutes of the fire. That allows estimation of the failure probability, and also taking decisions on whether the required safety level is ensured. The new method described in the paper makes it possible to take into account changes in the structure static scheme under fire conditions.
B I B L I O G R A F I A[1] M. Gładysz, P. Śniady, Spectral density of the bridge beam response with uncertain parameters under a random train of moving forces, Arch. Civil Mech. Eng. 9 (3) (2009) 31–47.
[2] A. Dudzik, U. Radoń, The evaluation of algorithms for determination of the reliability index, Arch. Civil Eng. LXI (3) (2015) 133–147.
[3] U. Radoń, Numerical aspects of application of FORM in node snapping truss structures, Arch. Civil Mech. Eng. 15 (1) (2015) 262–271.
[4] M. Maślak, Assessment of the safety level ensured by a steel load-bearing structure when subjected to a fire, in: Eighth International Conference on Advances in Steel Structures, Lisbon, 2015.
[5] Q. Guo, A. Jeffers, Stochastic finite element methods for the reliability-based fire-resistant design of structures, in: Application of Structural Fire Engineering, Prague, 2013.
[6] J. Králik, T. Varga, Deterministic and probability analysis of fire capacity of a steel portal frames with tapered members, in: Proceedings of the European Safety and Reliability Conference 2006, ESREL 2006, Safety and Reliability for Managing Risk, Estoril, Portugal, (2006) 2081–2086.
[7] B. Peros, J. Boko, N. Toric, Probabilistic analysis of the fire resistance of a steel roof structure exposed to fire, in: Proceedings of the 11th International Conference on Structural Safety and Reliability, New York, 2013, http://dx.doi.org/10.13140/2.1.1867.5208.
[8] G. De Sanctics, M.H. Faber, M. Fontana, Assessing the level of safety for performance based and prescriptive structural fire design of steel structures, in: Proceedings of the 11th International Symposium on Fire Safety Science, Christchurch, 2014, http://dx.doi.org/10.3929/ethz-a-010194560.
[9] M. Holicky©, Decision on fire safety measures based on risk assessment, in: Proceedings of 9th International Conference on Structural Safety and Reliability, ICOSSAR, Rome, Italy, 2005.
[10] G. Ginda, M. Maślak, Selected Methods in Expert Analysis on Multi-criteria Assessment of Parameters Decisive for Fire Safety, Wydawnictwo Politechniki Krakowskiej, Kraków, 2010 (in Polish).
[11] K. Kubicka, U. Radoń, W. Szaniec, U. Pawlak, Comparative analysis of the reliability of steel structure with pinned and rigid nodes subjected to fire, in: IOP Conference Series, Mater. Sci. Eng. 245 (2017), http://dx.doi.org/10.1088/1757-899X/245/2/022051.
[12] K. Kubicka, U. Radoń, W. Szaniec, Comparison of the reliability methods for steel trusses subjected to fire, in: IOP Conference Series, Mater. Sci. Eng. 245 (2017), http://dx.doi. org/10.1088/1757-899X/245/3/032061.
[13] A. Biegus, Probabilistic Analysis of Steel Structures, PWN, Warsaw-Wroclaw, 1977 (in Polish).
[14] Sh. Shao, Y. Murotsu, Approach to failure mode analysis of large structures, Probabilist. Eng. Mech. 14 (1999) 169–177.
[15] D.-S. Kim, S.-Y. Ok, J. Song, H.-M. Koh, System reliability analysis using dominant failure modes identified by selective searching technique, Reliab. Eng. Syst. Safe. 119 (2013) 316–331.
[16] Z. Qiu, D. Yang, I. Elishakoff, Probabilistic interval reliability of structural systems, Int. J. Solids Struct. 45 (2008) 2850–2860.
[17] J. Kłosowska, P. Obara, J. Turant, Kinematically admissible failure mechanisms for plane trusses, in: IOP Conference Series, Mater. Sci. Eng. 245 (2017), http://dx.doi.org/10.1088/1757-899X/245/2/022022.
[18] W. Gilewski, J. Kłosowska, P. Obara, Form finding of tensegrity structures via Singular Value Decomposition of compatibility matrix, in: Advances in Mechanics: Theoretical, Computational and Interdisciplinary Issues, Taylor & Francis Group, London, 2016, pp. 191–195.
[19] K. Dems, J. Turant, Structural damage identification Rusing frequency and modal changes, Bull. Pol. Acad. Sci. Tech. Sci. 59 (1) (2011) 27–32.
[20] PN-EN1991-1-2, Eurocode 1: Actions on Structures. Part 1–2: General Actions. Actions on Structures Exposed to Fire.
[21] PN-EN1993-1-2, Eurocode 3: Design of Steel Structures. Part 1–2: General Rules. Structural Fire Design.
[22] K. Kubicka, U. Radoń, Proposal for the assessment of steel truss reliability under fire conditions, Arch. Civil Eng. 61 (4) (2015) 141–154.
[23] PN-EN1993-1-1, Eurocode 3: Design of Steel Structures. Part 1-1: General Rules and Rules for Buildings. 
DOI 
Web of Science 
YADDA/CEON