THE INFLUENCE OF THE STIFFNESS OF CROSS DIRECTION SUPPORT ON THE STABILITY OF CENTRALLY COMPRESSED STEEL TUBE

During the construction of the in-place structure of reinforced concrete, the tube-and-coupler formwork support is the most popular formwork support system. Currently, during the calculation of stability of the vertical pole of the support system, the effective length is the length of a segment. If the function of the cross direction support is seen as the function of a fasten restriction, there will be a great difference. It will be analyzed the influence of the cross direction support on the stability of the vertical pole based on the theory of stability.