Effects of Seismic Damage and Retrofitting on a Full-scale Substandard RC Building-Ambient Vibration Tests

Pinar Inci*, Caglar Goksu, Erkan Tore, Alper Ilki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


This study investigates the effects of seismic damages and retrofitting on dynamic characteristics of substandard reinforced concrete buildings. Two identical 3-story buildings were constructed, one of which was retrofitted through application of carbon fiber-reinforced polymer jacketing on its columns. Ambient vibration tests were conducted at undamaged states, and after formation of damages of different extents. Test results showed that even limited reductions in vibration frequencies could indicate serious problems about structural safety. Although the vibration frequencies of both buildings were observed to be decreased with the increasing level of damage, decrease of those of the retrofitted building was lower.

Original languageEnglish
Pages (from-to)5747-5774
Number of pages28
JournalJournal of Earthquake Engineering
Issue number11
Publication statusPublished - 2022

Bibliographical note

Publisher Copyright:
© 2021 Taylor & Francis Group, LLC.


Authors are thankful to DowAksa Advanced Composites Holding B.V. and Governorship of Yalova for various supports provided for experimental studies. The contributions of Ilgaz Doğan (DowAksa), Cem Demir (PhD, ITU), Mustafa Comert (PhD, Rise Eng.), Ali Osman Ates (PhD, ITU), Ergün Binbir (PhD Candidate, ITU), Ali Naki Şanver (MSc, Rise Eng.), Gökhan Sarı (Undergrad., Balıkesir University), Emin Amini (Undergrad., Balıkesir University), Tamer Şahna (Undergrad., Balıkesir University), Oğuzhan Sözer (Undergrad., Balıkesir University), Berkay Aldırmaz (MSc Cand., ITU), Ömer Faruk Halıcı (PhD Candidate, ITU), Mehmet Aksa (Undergrad., Kultur Uni.) are also gratefully acknowledged.

FundersFunder number
Balıkesir University
Berkay Aldırmaz
DowAksa Advanced Composites Holding B.V.
International Technological University


    • Fiber-reinforced polymers
    • reinforced concrete
    • retrofitting
    • seismic
    • vibration test


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