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due to elastic buckling mode applied as uniform global and local initial imperfection of frames , Procedia Engineering, 23rd Czech and Slovak International Conference on Steel Structures and Bridges 2012, Podbanske, Slovakia26-28 September 2012 , Vol

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Pollack Periodica
Authors: Ivan Baláž, Yvonna Koleková, Lydia Moroczová, and Antonio Agüero

the corresponding differential equations that link the given actions with displacement required. The behavior of the battened and laced built-up beam-columns with sway and bow initial imperfections under combination of different external actions with

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Pollack Periodica
Authors: Monika Nagyová, Martin Psotný, and Ján Ravinger

An actual problem of fabrication of pre-stressed concrete prefabricated elements is presented in this article. The steel form could be more than 100 m long. Inserting the polystyrene plates ten or more prefabricates can be produced in one step. The horizontal deformations represent a special problem. The simplification of the elastic support as the friction effect is introduced. The non-linear solution has been used.

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In this overview of loaded stiffened plates various types, loadings, and stiffener shapes are investigated. Mikami and API methods are used for the optimum design and comparison of the two methods. Both methods consider the effect of initial imperfection and residual welding stresses, but their empirical formulae are different. The elastic secondary deflection due to compression and lateral pressure is calculated using the Paik's solution of the differential equation for orthotropic plates, and the self-weight is also taken into account. The unknowns are the thickness of the base plate as well as the dimensions and number of stiffeners. The cost function to be minimized includes two kinds of material and three kinds of welding costs.

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Pollack Periodica
Authors: Ivan Baláž, Yvonna Koleková, Lýdia Moroczová, and Antonio Agüero

1 Introduction More general cases of metal built-up columns made of steel and aluminum alloy are investigated in the paper. The influence of both initial imperfections is analyzed: the global initial sway imperfection at real column and the local

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Pollack Periodica
Authors: Ivan Baláž, Yvonna Koleková, Lýdia Moroczová, and Antonio Agüero

1 Introduction More general cases of metal built-up columns made of steel and aluminum alloy are investigated in the paper. The influence of both initial imperfections is analyzed: the global initial sway imperfection at real column and the local

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] Kala V. , Valeš J. Stochastic analysis of the lateral beam buckling of beams with initial imperfections, Proceedings of the 25th European Safety and Reliability Conference on Safety and Reliability of Complex

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.10 kN/m). Fig. 1. Details of the beam-column with the applied loads used in this study The geometry of the welded cross section is shown in Table 1 , along with the temperatures considered and the residual stresses patterns and the initial imperfection

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.10 kN/m). Fig. 1. Details of the beam-column with the applied loads used in this study The geometry of the welded cross section is shown in Table 1 , along with the temperatures considered and the residual stresses patterns and the initial imperfection

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. The residual stresses and initial imperfections can influence the structure’s behavior under compression [ 4 ]. It is well known that these initial imperfections due to welding reduce the structure’s ultimate strength. Even though various efforts have

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