Initial Tension Forces in Guys of Steel Industrial Chimneys at Adjustment Phase
[1]
Bernard Wichtowski, Faculty of Civil Engineering and Architecture, West Pomeranian University of Technology Szczecin, Szczecin, Poland.
[2]
Janusz Hołowaty, Faculty of Civil Engineering and Architecture, West Pomeranian University of Technology Szczecin, Szczecin, Poland.
The free standing and guyed industrial chimneys are the most typical steel chimney structures. Structural system of guyed chimneys is very similar to masts, in particular, to tube masts. Sometimes steel chimneys with too loose guys are in risk to collapse. In the paper, the presented results relate to initial tension force adjustments in 10 steel chimneys. The chimneys range is from 25,0 to 60,5 m of height. Two ways of determining the initial tension forces are described. The measured values of initial tension forces are presented. Analyses of performance in service conditions are also carried out. All the presented chimneys required adjustments because they had deviations from verticality and their guys were hanging loosely. The initial forces in guys at adjustment stages were calibrated to receive adequate horizontal rigidity of the chimney shaft in order to avoid high normal force in the shaft and to prevent guy vibration. The method of initial tension force regulation in chimney guys can be adopted for the assessments and adjustments of technical condition in similar structures.
Chimneys, Guys, Tension Forces, Adjustment Phase
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