Experimental determination of normal modes and damage detection of structures using additional mass

Volume 8, Issue 4, August 2023     |     PP. 149-161      |     PDF (546 K)    |     Pub. Date: December 26, 2023
DOI: 10.54647/cebc560139    36 Downloads     83498 Views  


Vasyl Redchenko, State Road Research Institute" ("DerzhdorNDI" SE), Ukraine

The article presents a method of experimentally determining the ordinates of the natural forms of oscillations of bridges. The method is to add a small amount of mass to the structure and measure the change in natural frequencies. The theoretical rationale and results of a number of experiments are outlined. The accuracy of the determination of the ordinates of the natural forms of oscillations makes it possible to detect not only the appearance of a certain defect, but also its position. this method implementation requires a small number of primary transducers (sensors); so, to determine individual natural forms only one sensor is needed. You can use all types of sensors that enable obtaining vibrorecords of free vibrations of the structure.

bridges, dynamic test, natural forms, defect, technical condition

Cite this paper
Vasyl Redchenko, Experimental determination of normal modes and damage detection of structures using additional mass , SCIREA Journal of Civil Engineering and Building Construction . Volume 8, Issue 4, August 2023 | PP. 149-161. 10.54647/cebc560139


[ 1 ] Yemanov, A.F. Diagnostics and monitoring technology of building structures’ state on the basis of microseismic vibrations investigations/ A.F. Yemanov, L.A. Sklyarov // Accident prevention for buildings and structures: Scientific papers collection - Issue 8. - M .: 2009. - p. 63-72.
[ 2 ] Koval P.M., Filonenko S.F., Stashuk P.M., Kornienko I.K. Analysis of dynamic characteristics of the bridge. // Collection "Roads and Bridges." K. Issue 9.-: 2008 - p.119 ... 128.
[ 3 ] Masato Abe, Makoto Shimamura, Masaaki Matsunuma. Bridge Substructure Monitoring Using Live Load Induced Vibration. TRB 2007 Annual Meeting – 11p.
[ 4 ] Khavkin O.C., Kalyukh Yu.I., Mar'yenkov M.G., Gluhovskyi V.P., Pryyemskyi V.D. Monitoring of structures and application of new State Standards DBN V.1.1-12: 2006 "Construction in seismic regions of Ukraine" .// Building structures: Scientific papers collection. K .: NDIBK, 2008.- Issue 69.- p.26-44.
[ 5 ] Redchenko, V.P. Defects identification in the structures using dynamic diagnostics methods [Text] / V.P. Redchenko // Construction, material science, mechanical engineering: Scientific papers collection / PHASA. - Issue 52 - D .: PHASA, 2010 - Part 2. p. 100-104.
[ 6 ] Wrana, B. Identyfikacja uszkodzenia mostu przy pomocy analizy wrazliwosci [Text] / V. Wrana // Materialy konferencyjne "Zespolone konstrukcje mostowe". - Krakow, Poland, 2009. - P. 544-554.
[ 7 ] Vibration in technics: Guide in 6 volumes. - M .: Mechanical engineering, 1978 - 1981.
[ 8 ] Redchenko, V.P. Features of spectral analysis application in the investigations of vibrations of building structures [Text]: Monograph / V.P. Redchenko. - D .: Porogy, 2010. - 98 p.
[ 9 ] Redchenko, V.P. Determining natural frequencies of bridges superstructure spans by spectra composition method [Text] / V.P. Redchenko // Diagnostics, durability and reconstruction of bridges and building structures: Scientific papers collection - Issue 11. - Lviv: Kamenyar, 2009. - P. 199-203.