根据壳体理论对钢支撑受力机理进行分析和简化计算，得出钢支撑在轴力和弯矩共同作用下，轴向正应力呈线性分布。
On the basis of theory analysis, it is deduced that the axial stress is linear distribution, when the steel support is loaded by axial force and moment.
轴向荷载作用下：楔形变截面构件的正应力和剪应力公式与等截面构件的正应力公式比较接近。
Tapered members under the axial load: the stresses formulas of the tapered members and those of the prismatic ones are identical.
轴向荷载作用下：楔形变截面构件的正应力和剪应力公式与等截面构件的正应力公式比较接近。
Tapered members under the axial load: the stresses formulas of the tapered members and those of the prismatic ones are identical.
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