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Euro-SiBRAM´2002 Prague, June 24 to 26, 2002, Czech Republic. T IMBER ELEMENT RELIABILITY ASSESSMENT. Antonín Lokaj. Department of Structural Engineering, Faculty of Civil Engineering VŠB – Technical University of Ostrava Ludvíka Podéš tě 1875 , 708 00 Ostrava - Poruba.
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Euro-SiBRAM´2002 Prague, June 24 to 26, 2002, Czech Republic TIMBER ELEMENT RELIABILITY ASSESSMENT Antonín Lokaj Department of Structural Engineering, Faculty of Civil Engineering VŠB – Technical University of Ostrava Ludvíka Podéště 1875, 708 00 Ostrava - Poruba
Euro-SiBRAM´2002 Prague, June 24 to 26, 2002, Czech Republic Outline of the Paper • Introduction • Load and material models in SBRA • SBRA Concepts in Timber Structures • Summary
Euro-SiBRAM´2002 Prague, June 24 to 26, 2002, Czech Republic Reliability assessment of timber elements according SBRA Load Duration Curves and Corresponding Histograms
Euro-SiBRAM´2002 Prague, June 24 to 26, 2002, Czech Republic Reliability assessment of timber elements according SBRA Histograms of MOR and MOEofCanadiansoftwood (Curry and Tory (1976))
Euro-SiBRAM´2002 Prague, June 24 to 26, 2002, Czech Republic Duration of load effect combination - Madison curve (L.W. Wood (1951)) SL = 93,13*T-0,0361
Palmgrin-Miner Rule: ni/Ni 1,0 Euro-SiBRAM´2002 Prague, June 24 to 26, 2002, Czech Republic Reliability assessment of timber elements according SBRA Safety Limit State Load Effect Combination Analysis Madison Curves Accumulation of partial Damage M-C Simulation Technique
Euro-SiBRAM´2002 Prague, June 24 to 26, 2002, Czech Republic Summary • Utilisation of development of computer technology. • Reengineering of the design procedure. • Application of powerful simulation techniques in designer‘s work. • Direct definition probability of failure. • New generation of specifications, application of databases and information technology. •Education of designers: From deterministic to probabilistic „way of thinking“.