Initial Stiffness of Reinforced Concrete Columns with Moderate Aspect Ratios
Tóm tắt
The estimation of the initial stiffness of columns subjected to seismic loadings has long been a matter of considerable uncertainty. This paper reports a study that is devoted to addressing this uncertainty by developing a rational method to determine the initial stiffness of RC columns when subjected to seismic loads. A comprehensive parametric study based on a proposed method is initially carried out to investigate the influences of several critical parameters. A simple equation is then proposed to estimate the initial stiffness of RC columns. The applicability and accuracy of the proposed method and equation are then verified with the experimental data obtained from literature studies.
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Tài liệu tham khảo
ACI 318, 2008, Building Code Requirements for Structural Concrete (ACI 318–08) and Commentary
Arakawa T., 1989, Transactions of the Japan Concrete Institute, 11, 317
Bett B.J., 1985, Behavior of Strengthened and Repaired Reinforced Concrete Columns Under Cyclic Deformations
Berry M.P., 2004, PEER Structural Performance Database User's Manual
FEMA 356, 2000, Prestandard and Commentary for the Seismic Rehabilitation of Buildings
Elwood K., 2009, ACI Structural Journal, 106, 476
Esaki F., 1996, Proceedings of the 11th World Conference on Earthquake Engineering
Ohno T., 1984, Proceedings of the JSCE: Structural Engineering/Earthquake Engineering, 1, 137
Ohue M., 1985, Transactions of the Japan Concrete Institute, 7, 293
Priestley M.J.N., 1994, ACI Structural Journal, 91, 537
Pujol S., 2002, Drift Capacity of Reinforced Concrete Columns Subjected to Displacement Reversals
Tran C.T.N., 2010, Experimental and Analytical Studies on the Seismic Behavior of RC Columns with Light Transverse Reinforcement
Umehara H., 1982, Shear Strength and Deterioration of Short Reinforced Concrete Columns Under Cyclic Deformations
Vecchio F.J., 1986, ACI Journal Proceedings, 83, 219