The influence of higher modes vibrations on local cracks in node of lattice girders bridges
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Publication date: 2012-06-30
Archives of Civil Engineering 2012;58(2):209-221
Several previous investigations on failure of a certain type lattice girders railway bridge (on so called BJD line) have not convincingly explained reasons nor have they described potential hazards. This paper attempts to provide an answer, employing static, dynamic, and fatigue analysis of the structure, focusing on previously not analyzed vibrations of elements constituting a lattice node. Detailed models of two types of such nodes – damaged and non- damaged were compared, inside carefully defined limits of applicability.
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