INVESTIGATION OF THE MOMENT–CURVATURE RELATIONSHIP FOR REINFORCED CONCRETE SQUARE COLUMNS

Yıl 2020, Cilt: 4 Sayı: 1, 36 - 46, 01.01.2020

Saeid Foroughi , Süleyman Bahadır Yüksel

https://doi.org/10.31127/tuje.571598

Cited By: 9

Öz

In this study; the effect of the material model, axial load, longitudinal reinforcement ratio, transverse reinforcement ratio and transverse reinforcement spacing on the behavior of reinforced concrete cross-sections were investigated. Squared cross-section column models have been designed. The effect of axial load, transverse reinforcement diameter and transverse reinforcement spacing on the behavior of reinforced concrete column models have been analytically investigated. The behavior of the columns was evaluated from the moment-curvature relation by taking the nonlinear behavior of the materials into account. The moment-curvature relationships for different axial load level, transverse reinforcement diameter and transverse reinforcement spacing of the reinforced concrete column cross-sections were obtained considering Mander confined model. Moment-curvature relationships were obtained by SAP2000 Software which takes the nonlinear behavior of materials into consideration. The examined effects of the parameters on the column behavior were evaluated in terms of ductility and the strength of the cross-section. In the designed cross-sections, the effect of transverse reinforcement diameter and transverse reinforcement variation on the confined concrete strength and the moment-curvature relationship was calculated and compared for constant longitudinal reinforcement ratio. The examined behavioral effects of the parameters were evaluated by comparing the curvature ductility and the cross-section strength. It has been found that transverse reinforcement diameters and transverse reinforcement spacing are effective parameters on the ductility capacities of the column sections. Axial load is a very important parameter affecting the ductility of the section. It has been observed that the cross-sectional ductility of the column sections increases with the decrease in axial load.

Anahtar Kelimeler

Transverse reinforcement, Nonlinear, Confined concrete strength, Axial load, Moment-curvature, Curvature ductility

Kaynakça

• Arslan, G. and Cihanli, E. (2010). “Curvature Ductility Prediction of Reinforced High-Strength Concrete Beam Sections.” Journal of Civil Engineering and Management, Vol. 16, No. 4, pp. 462–470.
• Bedirhanoglu, I. And Ilki, A. (2004). “Theoretical Moment-Curvature Relationships for Reinforced Concrete Members and Comparison with Experimental Data.” Sixth International Congress on Advances in Civil Engineering, 6-8 October 2004 Bogazici University, Istanbul, Turkey, pp. 231-240.
• Caglar, N., Ozturk, H., Demir, A., Akkaya, A. and Pala, M. (2013). “Betonarme Kesitlerdeki Moment-Eğrilik İlişkisinin Yapay Sinir Ağları ile Belirlenmesi.” Akademik Platform Mühendislik ve Fen Bilimleri Dergisi, pp. 1018-1029.
• Ersoy, U. ve Özcebe, G. (2012). Betonarme 1, Evrim Yayınevi ve Bilgisayar San. TİC. LTD. ŞTİ. İstanbul, Türkiye.
• Dok, G., Ozturk, H. and Demir, A. (2017). “Determining Moment-Curvature Relationship of Reinforced Concrete Columns.” The Eurasia Proceedings of Science, Technology, Engineering and Mathematics, (EPSTEM), Vol. 1, pp. 52-58.
• Foroughi, S. and Yuksel, S.B. (2018). “Moment Curvature Relationship of Square Columns.” International Congress on Engineering and Architecture, (ENAR), Alanya, Turkey, pp. 681-688.
• Olivia, M. and Mandal, P. (2005). “Curvature Ductility Factor of Rectangular Sections Reinforced Concrete Beams.” Journal of Civil Engineering, Vol. 16, No. 1, pp. 1-13.
• Mander, J. B., Priestley, M. J. N. and Park, R. (1988). “Theoretical stress-strain model for confined concrete.” Journal of Structural Engineering, Vol. 114, No. 8, pp. 1804-1826.
• Paulay, T., and Priestley, M.J.N. (1992). Seismic Design of Reinforced Concrete and Masonry Buildings, John Wiley & Sons, Inc, New York, USA.
• Park, R. and Ruitong, D. (1988). “Ductility of doubly reinforced concrete beam section.” ACI Structural Journal, Vol. 85, No. 2, pp. 217-225.
• SAP2000, Structural Software for Analysis and Design, Computers and Structures, Inc, USA.
• TSC (2018). Specification for Buildings to be Built in Seismic Zones, Ministry of Public Works and Settlement Government of the Republic of Turkey.
• TS500 (2000). Requirements for Design and Construction of Reinforced Concrete Structures, Turkish Standards Institute, Ankara, Turkey.
• Ucar, T., Merter, O. and Duzgun, M., (2015). “Determination of lateral strength and ductility characteristics of existing mid-rise RC buildings in Turkey.” Computers and Concrete, Vol. 16, No. 3, pp. 467-485.
• Xie, Y., Ahmad, S., Yu, T., Hino, S. and Chung, W. (1994). “Shear ductility of reinforced concrete beams of normal and high strength concrete.” ACI Structural Journal, Vol. 91, No. 2, pp. 140-149.