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Theoretical and experimental dynamic characteristics of a RC building model for construction stages
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  • Journal title : Computers and Concrete
  • Volume 17, Issue 4,  2016, pp.455-475
  • Publisher : Techno-Press
  • DOI : 10.12989/cac.2016.17.4.455
 Title & Authors
Theoretical and experimental dynamic characteristics of a RC building model for construction stages
Turker, Temel; Bayraktar, Alemdar;
Dynamic characteristics, named as natural frequencies, damping ratios and mode shapes, affect the dynamic behavior of buildings and they vary depending on the construction stages. It is aimed to present the effects of construction stages on the dynamic characteristics of reinforced concrete (RC) buildings considering theoretical and experimental investigations. For this purpose, a three-storey RC building model with a 1/2 scale was constructed in the laboratory of Civil Engineering Department at Karadeniz Technical University. The modal testing measurements were performed by using Operational Modal Analysis (OMA) method for the bare frame, brick walled and coated cases of the building model. Randomly generated loads by impact hammer were used to vibrate the building model; the responses were measured by uni-axial seismic accelerometers as acceleration. The building`s modal parameters at these construction stages were extracted from the processed signals using the Enhanced Frequency Domain Decomposition (EFDD) technique. Also, the finite element models of each case were developed and modal analyses were performed. It was observed from the experimental and theoretical investigations that the natural frequencies of the building model varied depending on the construction stages considerably.
construction stages;dynamic characteristics;finite element analysis;modal testing;operational modal analysis;reinforced concrete building;
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