Investigation of Dynamic Behavior of Adjacent Tall Buildings Interconnected with Fluid Viscous Dampers Considering Soil-Structure Interaction

Öz

Traditionally built tall buildings may be inadequate to absorb the energy released during major earthquakes. Connecting two neighboring tall buildings with fluid viscous damping (FVD) devices could be an effective method of absorbing energy. In this study, two adjacent tall buildings on three different soil types are connected with viscous damping devices under ground motion. After that; the values of displacement, acceleration, and shear force obtained from fixed support case (no soil) are compared with the values obtained from three different soil types. Six different connection models are defined by changing location and number of the fluid viscous dampers. Soil model is created by using viscous boundary conditions. In the modeling and analysis, ANSYS R19.2 computer program was used. According to the results, fluid viscous dampers are very effective on the dynamic response of the buildings exceeding more than 40%. Soil types are also effective on the response. Besides, it is concluded that the most suitable connection type among the determined connection models is that the viscous damping device is connected to the top floor of the short building.

Anahtar Kelimeler

• fluid viscous damper
• structural control
• structure-soil interaction
• tall buildings
• connected structures

Sıvı Viskoz Sönümleyicilerle Birbirine Bağlanmış Komşu Yüksek Binaların Dinamik Davranışının Zemin-Yapı Etkileşimini Dikkate Alarak İncelenmesi

Öz

Öz Geleneksel olarak inşa edilen yüksek binalar büyük depremler sırasında çıkan enerjiyi sönümlemede yetersiz kalabilir. Komşu iki yüksek binanın birbirine sıvı viskoz sönümleme cihazları ile bağlanması enerjiyi sönümlemede etkili bir yöntem olabilir. Bu çalışmada deprem etkisi altında ve üç farklı zemin türü üzerindeki iki yüksek bina birbirine viskoz sönümleyici cihazlar ile bağlanmıştır. Sonrasında ankastre mesnet üzerinde elde edilen yer değiştirme, ivme, tepe ve taban kesme kuvvetleri değerleri üç farklı zemin türünde meydana gelen değerler ile karşılaştırılmıştır. Sıvı viskoz sönümleyicilerin yerleri ve sayısı değiştirilerek altı farklı bağlantı modeli belirlenmiştir. Viskoz sınır şartı kullanılarak zemin modeli oluışturulmuştur. Modellemeler ve analizler ANSYS R19.2 programıyla iki boyutlu olarak gerçekleştirilmiştir. Sonuçlar incelendiğinde sıvı viskoz sönümleyici cihazlar yapının dinamik davranışında %40’ı aşan iyileşmeler meydana getirmiştir. Ayrıca zemin türleri de sonuçlar üzerinde oldukça etkilidir. Bunun yanında belirlenen bağlantı modelleri arasında en uygun bağlantı şeklinin kısa binanın en üst katına viskoz sönümleyici cihazın bağlanması olduğu sonucuna varılmıştır.

Anahtar Kelimeler

• Sıvı viskoz sönümleyici
• yapısal kontrol
• yapı-zemin etkileşimi
• yüksek yapılar
• bağlı yapılar

Kaynakça

1. ANSYS. (2019). R19.2 Academic. Retrieved from https://www.ansys.com/
2. Christenson, R E, Spencer Jr, B. F., & Johnson, E. A. (1999). Coupled building control using active and smart damping strategies. Optimization and Control in Civil and Structural Engineering, 187–195.
3. Christenson, Richard E, Spencer Jr, B. F., & Johnson, E. A. (2007). Semiactive connected control method for adjacent multidegree-of-freedom buildings. Journal of Engineering Mechanics, 133(3), 290–298.
4. Cimellaro, G. P., & Lopez-Garcia, D. (2007). Seismic response of adjacent buildings connected by nonlinear viscous dampers. In Structural Engineering Research Frontiers (pp. 1–12).
5. Farghaly, A. A. (2014). Optimization of Viscous Dampers with the Influence of Soil Structure Interaction on Response of Two Adjacent 3-D Buildings under seismic load. Optimization, 4(01).
6. Gurley, K., Kareem, A., Bergman, L. A., Johnson, E. A., & Klein, R. E. (1994). Coupling tall buildings for control of response to wind. Structural Safety & Reliability, 1994, 1553.
7. Klein, R. E., Cusano, C., & Stukel, J. (1972). Investigation of a Method to Stabilize Wind Induced Oscillations in Large Structures. 1972 ASME Winter Annual Meeting, Paper No. 72-WA/AUT-H.
8. Luco, J. E., & De Barros, F. C. P. (1998). Optimal damping between two adjacent elastic structures. Earthquake Engineering & Structural Dynamics, 27(7), 649–659.

9. OECD. (2020). OECD. Retrieved from http://www.oecd.org/cfe/regional-policy/cities.htm
10. Patel, C C, & Jangid, R. S. (2011). Dynamic response of adjacent structures connected by friction damper. Earthquakes and Structures, 2(2), 149–169.
11. Patel, Chirag C. (2011). Dynamic response of viscous damper connected similar multi-degree of freedom structures. International Journal of Earth Sciences and Engineering, 4(6), 1068–1071.
12. Patel, Chirag C, & Jangid, R. S. (2008). Influence of soil-structure interaction on response of adjacent SDOF structures connected by viscous damper.
13. Seto, K. (1994). Vibration control method for flexible structures arranged in parallel. Proc. First World Conference on Structural Control, 2.
14. Shobhika. (2015). Dynamic Response of Two Adjacent Structures Connected by Friction Damper (Coulomb Friction Model. International Journal of Engineering Development and Research (IJEDR), 3(2), 1253–1262.
15. Sugino, S., Sakai, D., Kundu, S., & Seto, K. (1999). Vibration control of parallel structures connected with passive devices designed by GA. Proceedings of the 2nd World Conference on Structural Control, 1, 329–337. John Wiley and Sons Chichester.
16. Uz, M. E., & Hadi, M. N. S. (2009). Dynamic analyses of adjacent buildings connected by fluid viscous dampers. Seventh World Conference on Earthquake Resistant Engineering Structures ERES VII. Limassol, Cyprus, Wessex Institute of, Technology, 150, 139–150.
17. Xu, Y. L., He, Q., & Ko, J. M. (1999). Dynamic response of damper-connected adjacent buildings under earthquake excitation. Engineering Structures, 21(2), 135–148.