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Long-term measurements of structural response of a tall steel chimney equipped with different damping devices
KTH.
2005 (English)Conference paper, Published paper (Refereed)
Abstract [en]

This report describes the results from long-term full-scale measurements of the structural response of a 90 m high, very slender steel chimney with vibration problems due to vortex shedding. The chimney was initially supplied with a mechanical pendulum-type damper at the top. Experience from monitoring the chimney over a six-year period showed that the chimney with an adjusted pendulum damper behaved well under normal conditions. However, cross-wind oscillations with unexpectedly large amplitudes occurred at a few occasions, considered to be caused by more severe lock-in effects from vortex shedding than expected from current load models. The chimney equipped with a cable damper has been monitored continuously for one year. It has been found to be a more efficient damper than the original pendulum damper at the chimney top. Data from measurements during this period are given in the report and compared with the response of the chimney before the cable damper had been introduced.

Place, publisher, year, edition, pages
2005. 322-323 p.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-148486Scopus ID: 2-s2.0-84875133715ISBN: 978-808624626-0 (print)OAI: oai:DiVA.org:kth-148486DiVA: diva2:750589
Conference
4th European and African Conference on Wind Engineering, EACWE 2005; Prague; Czech Republic; 11 July 2005 through 15 July 2005
Note

QC 20140929

Available from: 2014-09-29 Created: 2014-08-08 Last updated: 2014-09-29Bibliographically approved

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