Open AccessThe Influence of Higher Modes Vibrations on Local Cracks in Node of Lattice Girders Bridges / Wpływ Wyzszych Postaci Drgan Na Zaistnienie Lokalnych Spekan W Wezle Mostu Kratowego
Author(s) -
Stefan Pradelok
Publication year - 2012
Publication title -
archives of civil engineering
Language(s) - English
Resource type - Journals
eISSN - 2300-3103
pISSN - 1230-2945
DOI - 10.2478/v.10169-012-0013-0
Subject(s) - girder , structural engineering , vibration , lattice (music) , engineering , node (physics) , materials science , physics , acoustics
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.