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  • 标题:Investigations of harbour brick structures by using operational modal analysis
  • 本地全文:下载
  • 作者:Mariusz Żółtowski
  • 期刊名称:Polish Maritime Research
  • 电子版ISSN:2083-7429
  • 出版年度:2014
  • 卷号:21
  • 期号:1
  • 页码:42-53
  • DOI:10.2478/pomr-2014-0007
  • 语种:English
  • 出版社:Sciendo
  • 摘要:Historic harbour brick objects are subject to large dynamic loads clearly reflected by generated vibration processes.The vibrations may affect state of serviceability of structures by lowering comfort of persons working there as well as possible reaching the level hazardous to safety of the structures.The effect of vibrations to structure is mainly manifested by additional stresses in a given cross-section,which are summed up with those resulting from static loads.Moreover often occur consequences associated with environmental conditions and fatigue of materials which accelerate destruction of the objects.Therefore the dynamic loads may cause damaging effects in buildings of various structural types or even lead to their catastrofic destruction.Judging the necessity of improving the quality assessment methods of building structures for purposes of estimation of their state as well as safety factors for brick structures (see PN-B03002 standard,p.3.1.3 and 4.6),the author of this work undertook an attempt to investigate destruction process of selected building structures by using the method of operational modal analysis.
  • 关键词:modal analysis;natural vibration frequency;stabilization diagram;structural vibrations
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