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The existing concrete column reinforced by steel tube is commonly used in engineering. However, the computational theory of bearing capacity of the structure after reinforcement is insufficient at present. In the case of the initial stress of existing concrete column is relatively lower, the computational formula of axial bearing capacity for short column pier reinforced by steel tube has been deduced from the modified stress-strain curve of concrete filled steel tube. Comparing the computational results with the correspondent experimental data shows that the formula can provide support for the computation analysis of bearing capacity of reinforcement pier in engineering practice.

Computational Method for Bearing Capacity of Steel tube Reinforced Concrete Short Column under Axial Loading