Many portal frames are designed with tapered section so as to adapt to the change of the bending moment and save the steel.

对于大部分门式刚架，其柱子和梁通常都设计成变截面，以适应弯矩的变化，达到节约钢材的目的。

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According to the tapered section assumption, this paper presents a method for calculating the local stress of a hollow cylindrical shaft with fillets under tension.

根据锥形截面假设，探讨了一种计算具有圆角的空心圆轴拉伸时局部应力的方法。

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As the tapered-section member extends increasingly, it's very necessary to find an exact method to consider its stability.

随着变截面的日益推广，很有必要寻找一种精确的方法来考虑其稳定性。

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