Betonarme Boşluklu Perde Duvarlarin Deprem Etkisi Sonucu Yer Değiştirmeleri

Betonarme binalarda perdelerin belirli bölgelerinde boşluklar oluşturulmaktadır. Depremi benzeştirir etki altında betonarme perdelerde yer değiştirmeler olmaktadır. Buna bağlı olarak bu çalışmada kuvvet-deplasman ilişkileri arasındaki değişim incelenmiştir. Çalışmaya konu olan perdeler TBDY 2018’e göre yükseklik/boy (Hw/ℓw) oranı 2,5-3,0'ten yüksek olan etkin eğilme davranışı gösteren narin perdeler ve boy/en oranları iki limit arasında kalan bileşik kesme-eğilme davranışı gösteren orta narinlikte perdeler olarak verilmiştir. Betonarme perdelerin orta noktasında bırakılan boşluk oranlarına göre davranışa etkisi araştırılmıştır. Bunun için toplam 4 adet; biri referans diğerleri de sırasıyla %20, %35 ve %50 boşluk oranına sahip betonarme perde üretilerek, deprem etkisi altında sonuçları karşılaştırılmıştır. Boyut etkisinden kaçınılmak istenmiştir fakat numunenin gerçek ölçüleri çok büyük olduğundan 1/2 ölçekte imal edilmiştir. Çalışmada perdelerin yapısal anlamda gerçek davranışa yakın temsil edilmesi açısından laboratuvar ortamında ankastre mesnetlenme koşulu oluşturulmalıdır.

Displacement of Reinforced Concrete Space Shear Walls as a Result Of Earthquake Effect

In reinforced concrete buildings, gaps are formed in certain parts of the curtains. There are displacements in reinforced concrete shears under the effect that simulates an earthquake. Accordingly, in this study, the change between force-displacement relations was examined. The curtains that are the subject of the study are slender curtains with a height/height (Hw/ℓw) ratio higher than 2.5-3.0 according to TBDY 2018, and slender curtains with a combined shear-bending behavior with aspect ratios between two limits. are given as medium-delicate curtains. The effect on the behavior according to the void ratios left at the midpoint of the reinforced concrete curtains was investigated. For this, a total of 4 pieces with ½ scale; Reinforced concrete shears, one of which is a reference and the others with a void ratio of 20%, 35% and 50%, respectively, were produced and the results were compared under the effect of earthquakes. The size effect was tried to be avoided, but since the actual dimensions of the sample were too large, it was produced in 1/2 scale. In the study, a built-in support condition should be created in the laboratory environment in order to represent the curtains structurally close to the real behavior.

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  • Anıl, Ö. & Altın S. (2007). An Experimental Study on Reinforced Concrete Partially Infilled Frames, Engineering Structures, 29, 449-460.
  • Daniel, J.I., Shiu, K.N., & Corley W.G. (1986). Openings in Earthquake‐ Resistant Structural Walls, Journal of Structural Engineering, 112(7), 1660- 1676.
  • Kara, M. E. & Altın, S. (2006). Behavior of Reinforced Concrete Frames with Reinforced Concrete Partial Infills, ACI Structural J, 103, 701-709.
  • Kato, D., Noda, H., & Sugishita, Y. (1999). Strength and deformation capacity of cantilever structural walls with openings, Pacific Earthquake Engineering Research Center, University of California, PEER Report 1999/10, Berkeley, Maui, Hawaii, 311322.
  • Kebeli, Y. E. (2018). Experimental Investigation of Behaviour of Double-Layer Precast Rc Shear Walls Wıth Openings Under Hystretic Load, M. Sc. Thesis, Gazi University, Ankara.
  • Liauw, T.C. (1979). Test on Multistory Infilled Frames Subjected to Dynamic Lateral Loading, ACI Structural Journal, 40: 551-563.
  • Liauw, T.C. (1980). An Effective Structural System Againts EartquakeInfilled Frames, Proceeding of 7th WCEE, İstanbul, Turkey, Vol. 4, 481-485.
  • Ono, M., & Ezaki, F. (2000). The Effects of Loading Velocity on Elasto-Plastic Behavior of Reinforced Concrete Framed Shear Walls With Opening, The 12.World Conference on Earthquake Engineering, Auckland, New Zealand.
  • Öztürk, M. (2010) Strengthening of Reinforced Concrete Frames of Insufficient Eartquake Resistance by Applying External Shear Wall With Coupling Beam, PhD Thesis, Selçuk University, Konya.
  • Sakurai, M., Kuramoto, H., Matsui, T., & Akita, T. (2008). Seismic Performance of Rc Shear Walls With Multi-Openings, 0–7. TBDY, Turkey Building Earthquake Code. (2018).
  • TS500 Requirements for Design and Construction of Reinforced Concrete Structures. (2000). Turkish Standards Institute.