TY  - JOUR
T1  - Rapid Post-Earthquake Estimation of Vibration Frequencies of Historical Masonry Structures Using Laser Doppler Vibrometry
TT  - Rapid Post-Earthquake Estimation of Vibration Frequencies of Historical Masonry Structures Using Laser Doppler Vibrometry
AU  - Bozyiğit, Baran
AU  - Acikgoz, Sinan
PY  - 2025
DA  - October
Y2  - 2025
DO  - 10.18400/tjce.1677967
JF  - Turkish Journal of Civil Engineering
JO  - tjce
PB  - TMMOB İnşaat Mühendisleri Odası
WT  - DergiPark
SN  - 2822-6836
VL  - 37
IS  - 2
LA  - en
AB  - It is challenging to conduct operational modal analysis of structures using contact sensors (e.g. accelerometers) in post-earthquake reconnaissance studies due to safety concerns. This paper presents the use of Laser Doppler Vibrometry as a safe and practical non-contact alternative to detect vibration frequencies of historical masonry structures. A single point Laser Doppler Vibrometer (LDV) was used to collect ambient vibration data from historical masonry structures after the 2023 Kahramanmaras earthquakes. The velocity measurements for a single-span arch bridge and a historic church are analysed in the frequency domain to identify the vibration modes of the examined structures. The vibration frequencies are used to evaluate, and where necessary update, the 3D finite element models created from point cloud data and non-destructive material tests. The results highlight the potential of LDV to provide practically useful data for conducting forensic post-earthquake investigations.
KW  - Historic masonry
KW  - laser Doppler vibrometry
KW  - model calibration
KW  - natural frequency
N2  - It is challenging to conduct operational modal analysis of structures using contact sensors (e.g. accelerometers) in post-earthquake reconnaissance studies due to safety concerns. This paper presents the use of Laser Doppler Vibrometry as a safe and practical non-contact alternative to detect vibration frequencies of historical masonry structures. A single point Laser Doppler Vibrometer (LDV) was used to collect ambient vibration data from historical masonry structures after the 2023 Kahramanmaras earthquakes. The velocity measurements for a single-span arch bridge and a historic church are analysed in the frequency domain to identify the vibration modes of the examined structures. The vibration frequencies are used to evaluate, and where necessary update, the 3D finite element models created from point cloud data and non-destructive material tests. The results highlight the potential of LDV to provide practically useful data for conducting forensic post-earthquake investigations.
CR  - Ramos, L. F., Marques, L., Lourenço, P. B., De Roeck, G., Campos-Costa, A., Roque, J.,  Monitoring historical masonry structures with operational modal analysis: Two case studies. Mech. Syst. Signal Pr., 24(5), 1291-1305, 2010.
CR  - Calayır, Y., Yetkin, M., Erkek, H., Finite element model updating of masonry minarets by using operational modal analysis method. Structures, 34, 3501-3507, 2021.
CR  - Aloisio, A., Di Pasquale, A., Alaggio, R., Fragiacomo, M., Assessment of seismic retrofitting interventions of a masonry palace using operational modal analysis. Int. J. Archit. Herit., 16(5), 692-704, 2022.
CR  - Bayraktar, A., Türker, T., Altunişik, A. C., Experimental frequencies and damping ratios for historical masonry arch bridges. Constr. Build. Mater., 75, 234-241, 2015.
CR  - Nassif, H. H., Gindy, M., Davis, J., Comparison of laser Doppler vibrometer with contact sensors for monitoring bridge deflection and vibration. Ndt & E International 38(3), 213-218, 2005.
CR  - Yu, T., Tang, Q., Vinayaka, S., Identifying structural properties of a steel railway bridge for structural health monitoring using laser Doppler vibrometry. Automat. Constr., 160, 105320, 2024.
CR  - Yang, S., Allen, M. S., Output-only modal analysis using continuous-scan laser Doppler vibrometry and application to a 20 kW wind turbine. Mech. Sist. Signal Process., 31, 228-245, 2012.
CR  - Pepi, C., Gioffrè, M., Comanducci, G., Cavalagli, N., Bonaca, A., Ubertini, F., Dynamic characterization of a severely damaged historic masonry bridge. Procedia Eng., 199, 3398-3403, 2017.
CR  - Providakis, C. P., Mousteraki, M. G., Providaki, G. C., Operational Modal Analysis of Historical Buildings and Finite Element Model Updating Using α Laser Scanning Vibrometer. Infrastructures, 8(2), 37, 2023.
CR  - Gioffre, M., Cavalagli, N., Pepi, C., Trequattrini, M., Laser doppler and radar interferometer for contactless measurements on unaccessible tie-rods on monumental buildings: Santa Maria della Consolazione Temple in Todi. J. Phys. Conf. Ser., 778(1), 012008, 2017.
CR  - Bozyigit, B., Ozdemir, A., Donmez, K., Dalgic, K. D., Durgut, E., Yesilyurt, C., Dizgin, Y., Yildeniz, C., Ispir, M., Bedirhanoglu, I., Aktas, Y.D., Acikgoz, S., Damage to monumental masonry buildings in Hatay and Osmaniye following the 2023 Turkey earthquake sequence: The role of wall geometry, construction quality, and material properties. Earthquake Spectra, 40(3), 1870:1904, 2024.
CR  - SAP2000. V24.2.0, Integrated Solution for Structural Analysis & Design, CSI Inc., Berkeley, California, 2023.
UR  - https://doi.org/10.18400/tjce.1677967
L1  - https://dergipark.org.tr/tr/download/article-file/4781324
ER  -