Reliability based limit design of steel frames with limited residual strain energy capacity |
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| Authors: | Majid Movahedi Rad János Lógó Jaroslaw Knabel Piotr Tauzowski |
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| Institution: | 1. Department of Structural Mechanics, Budapest, University of Technology and Economics, 1111 Budapest, Műegyetem rkp. 3, Hungary;2. Institute of Fundamental Technological Research, Polish Academy of Sciences, Swietokrzyska 21, 00-049 Warsaw, Poland |
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| Abstract: | The aim of this paper is to take into consideration the influence of the limited load carrying capacity of the connections on the plastic limit state of elasto-plastic steel (or composite) framed structures under multi-parameter stochastic loading and probabilistically given conditions. In addition to the plastic limit design to control the plastic behaviour of the structure, bound on the complementary strain energy of the residual forces is also applied. This bound has significant effect for the load parameter. If the design uncertainties (manufacturing, strength, geometrical) are expressed by the calculation of the complementary strain energy of the residual forces a reliability based extended limit design problem is formed. The formulations of the problems yield to nonlinear mathematical programming which are solved by the use of sequential quadratic algorithm. The bi-level optimization procedure governed by the reliability index calculation. (© 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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