Determining Dynamic Characteristics Of Reinforced Concrete Minarets And Updating Of Their Finite Element Models Using Environmental Vibration Data

Year 2018, Volume: 13 Issue: 1, 93 - 98, 01.03.2018

Musa Yetkin Yusuf Calayır Hakan Erkek

Abstract

Structures are exposed to various dynamic effects such as
earthquake, wind and traffic load. It need to be taken various measures for
surviving the structures under dynamic loads. Taking the appropriate measures
depends on the well-known of dynamic behavior of existing structures. This
behavior of the structure can be known through analytical or experimental
methods. In the analytical methods, many acceptance is made in finite element
modeling of the structure and it is considered that the created model
represents its existing case. However, it is rather difficult to fully represent
of the existing structure with the accepted assumptions. In experimental
methods, the dynamic characteristics of the structure (natural frequencies,
mode shapes and damping ratios) are determined for the present case. Using
these dynamic characteristics, the existing analytical model of the structure
can be updated and the evaluation of the structure according to this new model
can be made more realistic. In this study, analytical and experimental analyses
of the minaret of Firat University Engineering Campus Mosque were carried out.
The finite element model has been updated depending on the dynamic
characteristics obtained from the experimental analysis.

Keywords

Dynamic characteristics, Reinforced concrete minaret, Analytical model, Environmental vibration data, updating of finite element model

References

• 1.Rainieri, C., and Fabbrocino, G., (2011). Operational modal analysis for the characterization of heritage structures. Geofizika, 28.1: 109-126. 2.Türker, T. (2011). Çevresel Titreşim Verileri Kullanılarak Yapıların Hasar Durumlarının Tespiti Ve Değerlendirilmesi, Doctoral Thesis, Karadeniz Technical University, Institute of Science and Technology, 247s. 3.Şahin, A. (2009). Yapıların Deneysel ve Operasyonel Modal Analizleri İçin Sayısal Sinyal İşleme, Dinamik Karakteristik Belirleme ve Sonlu Eleman Model İyileştirme Yazılımları: SignalCAD - ModalCAD – FemUP, Doctoral Thesis, Karadeniz Technical University, Institute of Science and Technology, Trabzon, 361s. 4.Turan, F.N. (2012). Dengeli Konsol Betonarme Köprülerin Dinamik Karakteristiklerinin Çevresel Titreşim Verileri Kullanılarak Belirlenmesi, Master's Thesis, Karadeniz Technical University, Institute of Science and Technology, Trabzon, 84s. 5.Yetkin, M. (2016). Betonarme Yapıların Çevresel Titreşim Verileri Kullanılarak Dinamik Davranışının İncelenmesi, Master's Thesis, Firat University, Institute of Science and Technology, Elazig, 68s. 6.Bayraktar, A., Altunışık, A.C., Sevim, B., Türker, T., and Birinci, F., (2010). Tarihi Yapıların Deprem Güvenliklerinin Tahribatsız Deneysel Yöntemlerle Belirlenmesi. İMO İstanbul, 98: 10-20.. 7.Yetkin, M., Calayır, Y., and Erkek, H., (2016). Çevresel Titreşim Verileri Kullanılarak Yapıların Dinamik Karakteristiklerinin Belirlenmesi Ve Sonlu Eleman Modellerinin Güncelleştirilmesi. International Symposium on Natural Hazards and Hazard Management (Uluslararası Doğal Afetler ve Afet Yönetimi Sempozyumu - DAAYS’16), Karabük Üniversitesi, Karabük, 2-4 Mart, 2016, 133-138. 8.Bayraktar, A., Sevim, B., Altunişik, A.C., and Türker, T., (2007). Tarihi Yığma Minarelerin Deprem Güvenliklerinin Operasyonal Modal Analiz Yöntemiyle Belirlenmesi. Tarihi Eserlerin Güçlendirilmesi ve Geleceğe Güvenle Devredilmesi Sempozyumu 1, Ankara, Türkiye, 415-428. 9.D’Ambrisi, A., Mariani, V., and Mezzi, M., (2012). Seismic assessment of a historical masonry tower with nonlinear static and dynamic analyses tuned on ambient vibration tests. Engineering Structures, 36: 210-219. 10.Bartoli, G., Betti, M., and Giordano, S., (2013). In Situ Static and Dynamic Investigations on the Torre Grossa Masonry Tower. Engineering Structures, 52: 718-733. 11.Çalık, İ., Demirtaş, B., Bayraktar, A., and Türker, T., (2012). Yığma Taş Minarelerin Analitik Ve Deneysel Yöntemlerle Güvenliğinin Belirlenmesi: Trabzon Muhittin Camii Minaresi Örneği. Vakıflar Dergisi, 38: 121-139. 12.Choi, Park, S., Hyun, C.H., Kim, M.S., and Choi, K.R., (2010). Modal Parameter Identification Of A Containment Using Ambient Vibration Measurements. Nuclear Engineering and Design, 240: 453-460. 13.Ventura, C., Laverick, B., Brincker, R., and Andersen, P., (2003). Comparison of Dynamic Characteristics of Two Instrumented Tall Buildings. In Proceedings of IMAC-21: A Conference on Structural Dynamics, February 3-6, The Hyatt Orlando, Kissimmee, Florida, 236-242. 14.Vivo, A.D., Brutti, C., and Leofanti, J.L., (2013). Modal shape identification of large structure exposed to wind excitation by operational modal analysis technique. Mechanical Systems and Signal Processing, 39: 195–206. 15.Heerah, A.R.P. (2009). Field Investigatıon of Fundamental Frequency of Bridges Using Ambient Vibration Measurements. Master of Engineering, McGill University Montreal, Canada, 148s. 16.Ewins, D.J., (2000). Modal Testing: Theory Practice and Application, Research Studies Press, Baldock, Hertfordshire, UK, 576s. 17.Mendes, P., Baptista, M.A., Agostinho, L., Lagomarsino, S., and Costav, J.P., (2005). Structural and dynamic analysis of N. Sra. do Carmo churchs. Proceedings EURODYN2005, Structural Dynamics, Lagos Portugal, 311-318.