Determination to the period of a school building before and after its retrofitting using ambient vibration records

Authors : Selçuk KAÇIN, Halil Çağrı YILMAZ, Cemil ÇAĞLAR

Pages : 156-160

Doi:10.31127/tuje.873050

View : 18 | Download : 17

Publication Date : 2022-04-15

Article Type : Research Paper

Abstract :Determining the dynamic parameters of the structures allows us to obtain a substantial amount of information about the state of the building. Recently, the determination of these parameters were performed through Structural Health Monitoring Systems insert ignore into journalissuearticles values(SHMSs);, which are non-destructive methods. In scope of this study, the period values prior to and following the retrofitting of a school building, which are among the dynamic parameters, were examined. The Operational Modal Analysis insert ignore into journalissuearticles values(OMA); method, which is based on the principle of measuring the responses of ambient effects in the structure in the experimental study, has been utilized. For this purpose, response records taken from the building under the effect of ambient vibration were used. Before and after retrofitting, the records of the building under the effect of ambient vibration were taken from the same locations. 3 sensors were used to record ambient vibrations. The data from these sensors were transferred to a computer by using a data logger. In order to measure and evaluate the responses Enhanced Frequency Domain Decomposition Method insert ignore into journalissuearticles values(EFDDM); in the frequency domain and Stochastic Subspace Identification Method insert ignore into journalissuearticles values(SSIM); in the time domain were used. Following the analysis, a comparison of how the period values had changed was conducted.
Keywords : SHMSs, Retrofitting, Dynamic Analysis, Ambient Vibration Records, OMA