Reliability component differentiation in building structures made of timber

Marian Gwóźdź


The design of timber structures according to the current generation of Eurocodes results in new requirements being set for the authors of architectural and building designs with respect to the reliability management of such structures. The reliability problems should be formulated in the building permit design in an unequivocal manner, obliging the authors of the detailed design, as well as the contractors to deliver structures, which have all the operational parameters fully conforming to the expectations of the investor. Substantive and formal basics in this regard are formulated in the Eurocodes: PN-EN 1990, PN-EN 1991, PN-EN 1995 as well as in the related European codes. The reliability management problems of contemporary timber structures are related to the cubature buildings of different life spans, including buildings subjected to the climate loads characterised by several hundred year-long return periods.

Słowa kluczowe: timber, bearing capacity, reliability, destruction consequence classes, reliability classes, return period, reference period, loads

[1] Augusti G., Baratta A., Casciati F., Probabilistic methods in structural engineering, Chapman and Hall. London, New York 1984.
[2] Cornell C.A., Structural safety specification based on second-moment reliability analysis, Final Report. Symposium on Concepts of Safety of Structures and Methods of Design, London 1969, IABSE, Zurich 1969.
[3] Ferry-Borges J., Castanheta M., Structural safety, CEB Bulletin d`Information No. 78. Copenhague 1971.
[4] Gwóźdź M., Machowski A., Wybrane badania i obliczenia konstrukcji budowlanych metodami probabilistycznymi, Wydawnictwo Politechniki Krakowskiej, Kraków 2011.
[5] Gwóźdź M., Machowski A., Żwirek P., Wybrane zagadnienia niezawodności szkieletów stalowych budynków, Wydawnictwo Politechniki Krakowskiej, Kraków 2013.
[6] Gwóźdź M., Kuchta K., Zarządzanie niezawodnością obiektów kubaturowych wg normy PN-EN 1990, Czasopismo Techniczne, 2-A/2/2011.
[7] Hasofer A.M., Lind N.C., Exact and invariant second-moment code format, Journal of Engineering Mechanics Division ASCE. Vol. 100. No. EM1/1974.
[8] Madsen H.O., Krenk S., Lind N.C., Methods of structural safety, Prentice Hall 1986.
[9] Nowak A.S., Collins K.R., Reliability of structures, McGraw-Hill 2000.
[10] Rozporządzenie Ministra Infrastruktury z dnia 03.07.2003 r. w sprawie szczegółowego zakresu i formy projektu budowlanego. Dz. U. 2003 nr 120 poz. 1133.
[11] Shinozuka M., Basic analysis of structural safety, Journal of Structural Engineering. Vol. 109, No.3/1983.
[12] Thoft-Christensen P., Baker M.J., Structural reliability theory and its applications, Springer-Verlag, Berlin 1982.
[13] Żurański J. A., Sobolewski A., Obciążenie śniegiem w Polsce, Wydawnictwa Instytutu Techniki Budowlanej, Warszawa 2013.
[14] PN-EN 1990 Eurocode. Basis of structural design. European Committee for Standardization, 2002.
[15] PN-EN 1991-1-3 Eurocode 1. Actions on structures – Part 1–3: General actions – Snow lods. European Committee for Standardization, 2003.
[16] PN-EN 1991-1-4 Eurocode 1. Actions on structures – Part 1–4: General actions – Wind actions. European Committee for Standardization, 2005.
[17] PN-EN 1991-1-5 Eurocode 1. Actions on structures – Part 1–5: General actions – Thermal actions. European Committee for Standardization, 2003.
[18] PN-EN 1995-1-1 Eurocode 5. Design of timber structures – Part 1–1: General – Common rules and Rules for buildings. European Committee for Standardization, 2004.