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| Numerical analysis method of the eccentric compression bearing capacity for the concrete filled steel tubelar latticed columns |
| Received:February 28, 2008 |
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| DOI：10.7511/jslx20101021 |
| KeyWord:ultimate bearing capacity numerical method concrete-filled steel tube latticed column eccentric compression |
| Author | Institution |
| 蒋丽忠 |
中南大学 土木建筑学院,长沙 |
| 周旺保 |
中南大学 土木建筑学院,长沙 |
| 唐斌 |
中南大学 土木建筑学院,长沙 |
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| Abstract: |
| The Taylor’s series were used as the piecewise interpolation function. Based on the equilibrium condition of several sections and the stress-strain relationship of the concrete-filled steel tube considerating the confinement effect,the numerical method for calculating the elastic-plastic ultimate loads of the concrete-filled tubular laced columns were put forward,and the corresponding computing program was compiled.Compared with the existing methods, the effect of the shear was taken into account in this method, which was not only suitable for calculating the ultimate load of the eccentric compression members with equal eccentricity, but also the eccentric compression members with unequal eccentricity. The elastic-plastic ultimate loads of some domestic existing four-tube concrete-filled steel tubular laced columns with equal eccentricith are computed using the numerical method,and the computed results are compared with the existing code. The computed results indicated that the existing computational methods are conservative, the computational errors are great,and the computed results in this article agree well with the test results. |
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