TY - JOUR N2 - The paper presents a proposal for the assessment of the reliability of steel truss (both statically determinate and indeterminate) in the persistent and accidental design situation. In the analysis, a probabilistic approach was used. The global Hasofer-Lind reliability index was employed, computed in successive time steps for the whole structure, not for individual elements. The statically determinate truss was modelled as a serial system from the reliability standpoint. For the statically indeterminate truss, kinematically admissible failure mechanisms were determined by means of the examination of the singularity of the stiffness matrix of the structure, converting the truss into a geometrically variable system. For the problem thus formulated, a serial-parallel reliability model was constructed. Monitoring the reliability index in the successive minutes of the fire makes it possible to estimate the probability of the structure failure, and to decide whether the required safety level is maintained. L1 - http://www.journals.pan.pl/Content/84055/mainfile.pdf L2 - http://www.journals.pan.pl/Content/84055 PY - 2015 IS - No 4 EP - 154 KW - reliability KW - serial system KW - parallel system KW - fire analysis KW - Hasofer-Lind reliability index A1 - Kubicka, K. A1 - Radoń, U. PB - WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES DA - 31.12.2015 T1 - Proposal for the assessment of steel truss reliability under fire conditions SP - 141 UR - http://www.journals.pan.pl/dlibra/publication/edition/84055 T2 - Archives of Civil Engineering ER -