Instruments of probabilistic optimisation of load bearing capacity and reliability of statically indeterminate complex structures

• Autorzy: Kowal Z.

Identyfikatory

DOI

10.2478/ace-2014-0004

• Języki publikacji: EN

Abstrakty

EN

The paper presents the method of probabilistic optimisation of load bearing capacity and reliability of statically indeterminate bar structures, and of coupling of members in kinematically admissible failure mechanisms (KAFM), which contain minimal critical sets of elements (MCSE). The latter are characterised by the fact that if only a single element is operational, the whole set is operational too. A method of increasing load bearing capacity and reliability of KAFM built from bars dimensioned in accordance with the code is presented. The paper also shows estimation of load bearing capacity and reliability of KAFM of the optimised structures containing elastic-plastic bars with quasi-brittle connections with nodes. The necessity of increasing connection of load bearing capacity and reliability in relation to bar reliability in order to prevent bars from being excluded from MCSE due to connection fracture is estimated.

Słowa kluczowe

EN

load bearing capacity; reliability; probabilistic optimisation; complex structure

PL

nośność; niezawodność; optymalizacja probabilistyczna; konstrukcja złożona

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2014
• Tom: Vol. 60, nr 1
• Strony: 77--90
• Opis fizyczny: Bibliogr. 15 poz., il., tab.

Twórcy

autor

Kowal Z.

• Department of Mechanics, Metal Structures and Computer Methods, Faculty of Civil Engineering and Architecture, Kielce University of Technology

Bibliografia

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• 2. GWÓŻDŻ M., MACHOWSKI A., Selected Problems and Building Structure Calculations with Probabilistic Methods (in Polish). Wyd. Politechniki Krakowskiej, Kraków 2011.
• 3. DZIUBDZIELA W., KOPOCIŃSKI B., KOWAL Z., Ultimate bearing capacity of structural systems with minimal critical sets having connection elements in pairs. Archives of Mechanics 25, 5/1973, pp. 719-731.
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• 8. KOWAL Z., The formation of space bar structures supported by the system reliability theory, Arch. Of Civil and Mechanical Engineering, Vol. XI, No. 1, 2011. Polish Ac. of Sciences – Wrocław Branch., Wrocław Univ. of Technology.
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• 13. PN-EN 1991-1-5:2005, Eurocode 1: Actions on Structures.
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