Study on the Strength and Deformation of Stirrup Confined Concrete in Cruciform Columns

Abstract:

In order to determine the strength and deformation characteristics of confined concrete under axial compression of cruciform columns, the test results have been obtained for reinforced concrete cruciform columns through axial compression experiment in the study. After analysis and research, the stress-strain curves of confined concrete have been established, the relational expression between the relatively increased value of the peak strain value of confined concrete in cruciform columns and the stirrup characteristic value was proposed, the descending section of the stress-strain curves of confined concrete was studied, and the variation relationship between the strain ductility coefficient of the confined concrete and the stirrup characteristic value was established. The study results will be provided as reference for the structural design and deformation calculation of cruciform columns.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 1366-1376
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.1366
• Online since: May 2011
• Authors: Lin Zhu Sun, Tie Cheng Wang, Fang Yang
• Keywords: Confined Concrete, Cruciform Column, Deformation, Stirrup Characteristic Value, Strength

References

[1] Guo, Z.H., Zhang, X.Q. Test Study on the Stress-Strain Full Curve of Concrete [J]. Journal of Building Structures, 1982, (1): 14-l8.

[2] Hu, H.T., Ye, Z.M. Calculation of the Columns' Bearing Capacity under Axial Compression of Composite Stirrup Confined Concrete [J]. Journal of Qingdao Institute of Architectural Engineering, 1996,17 (4): 1-5

[3] Qian, J.R., Chen, L.R., Zhou, D.L. Axial Compression Performance of Confined Concrete Columns with Ordinary Stirrups [J]. Journal of Tsinghua University (Natural Science), 2002,42 (10): 1369-1373

[4] Salim, R. and Murat, S, Member, ASCE .Confinement Model for High-strength Concrete [J]. Structural Engineering,1999, 125, 3: 281-289.

[5] Chung, H.S., Yang, K.H. Lee, Y.H., et al. Stress–strain Curve of Laterally Confined Concrete [J]. Engineering Structures, 2002, 24 :1153～1163．

DOI: 10.1016/s0141-0296(02)00049-4

[6] Kent, A.H., Gayatri, K. Experimental Investigation of the Behavior of Variably Confined Concrete [J]. Cement and Concrete Research, 2003, 33, 6: 873-880.

DOI: 10.1016/s0008-8846(02)01086-4

[7] Mander, J.B., Priextley, M.J.N., Park, R. Theoretical Stress-Strain Model for Confined Concrete. J. Sruc.Engng, ASCE, 1988, 8: 1804-1826.

[8] Sheikh, S.A. and Uzurneri, S.M. Analytical Model for Concrete Confinement in Tied Columns [J]. ASCE, 1982, 12: 2703-2722.

[9] Park, R., Priority, M.J.N. and Gill, W.D. Ductility of Square-Confined Concrete Columns [J]. ASCE, 1982, 4: 929-951.

[10] Saatcioglu, S.M. and Razvi, S.R. Strength and Ductility of Cordlned Concrete [J]. ASCE,1992, 6: l590-l607.

[11] J．B．Mander, J.B., Priesfley, M.J.N. and Park, R. Theoretical Stress-Strain Model for Confined Concrete [J]. ASCE, 1988, 8: 1804-1826.