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Initial Tension Forces in Guys of Steel Industrial Chimneys at Adjustment Phase
Current Issue
Volume 1, 2014
Issue 5 (November)
Pages: 104-109   |   Vol. 1, No. 5, November 2014   |   Follow on         
Paper in PDF Downloads: 18   Since Aug. 28, 2015 Views: 1606   Since Aug. 28, 2015
Authors
[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.
Abstract
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.
Keywords
Chimneys, Guys, Tension Forces, Adjustment Phase
Reference
[1]
The CICIND Chimney Book. Industrial Chimneys of Concrete or Steel, CICIND, Zurich, 2005.
[2]
Smith, BW, Communication Structures, Thomas Telford, London, 2007.
[3]
Rykaluk, K, Steel Structures. Chimneys, Towers and Masts, OWPW, Wrocław (in Polish), 2005.
[4]
Włodarczyk, W, “On failures and desinging of steel chimneys”, Inżynieria i Budownictwo, No. 10, pp. 535-539 (in Polish), 1998.
[5]
Wichtowski, B, “Adjustment of steel chimneys with be-level guyed”, Inżynieria i Budownictwo, No. 5, pp. 240-243 (in Polish), 2013.
[6]
Pałkowski, Sz, Steel Structures, Selected Problems and Design, PWN, Warszawa (in Polish), 2001.
[7]
Instruction ER-01, Operation of towers and masts, TP SA, Warszawa (in Polish), 1995.
[8]
Wichtowski, B, “Forces in guys according thermal analysis of structural shell of a 40 m high steel chimney”, Przegląd Budowlany, No. 8-9, pp. 32-35 (in Polish), 1994.
[9]
Wichtowski, B, Hołowaty, J, “Steel chimneys at adjustment phase. Initial tension forces in guys”, EUROSTEEL 2011, 6th European Conference on Steel and Composite Structures: Research – Design – Construction, Budapest 2011, pp. 2499-2504.
[10]
Kozłowski, A, Baran R, “Variablility of loads on a guyed chimney in service”, Inżynieria i Budownictwo, No. 10, pp. 392-394 (in Polish), 1992.
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