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Structural Engineering and Mechanics Volume 1, Number 1, October 1993 , pages 17-30 DOI: https://doi.org/10.12989/sem.1993.1.1.017 |
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Multi-spring model for 3-dimensional analysis of RC members |
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Kang-Ning Li and Shunsuke Otani
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| Abstract | ||
| A practical multi-spring model is proposed for a nonlinear analysis of reinforced concrete members, especially columns, taking into account the interaction of axial load and bi-directional bending moment. The parameters of the model are determined on the basis of material properties and section geometry. The axial force-moment interaction curve of reinforced concrete sections predicted by the model was shown to agree well with those obtained by the flexural analysis utilizing realistic stress-strain relations of materials. The reliability of the model was also examined with respect to the test of reinforced concrete columns subjected to varying axial load and bi-directional lateral load reversals. The analytical results agreed well with the experiment. | ||
| Key Words | ||
| nonlinear analysis; reinforced concrete members; columns; multi-spring model; flexural deformation; varying-axial load; bi-directional moment interaction; axial load-moment interaction; axial deformation-rotation interaction. | ||
| Address | ||
| Department of Civil Engineering, National University of Singapore, Singapore 0511, Singapore Department of Architecture, The University of Tokyo, Tokyo 113, Japan | ||