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本文提出考虑结点侧移进行框架内力计算(二阶计算)的一种近似方法,采用逐次渐近法,每轮用等效单柱框架进行位移估计再在原框架上作迭代计算,以计算出的内力修正杆的刚度后再作下轮计算,直至两次计算结果接近为止。本文内推导了具有轴向力杆件组成刚架的迭代公式,并进行例题计算,计算结果表明计算收敛迅速。本文的计算方法可用计算器计算
This paper proposes an approximate method to calculate the internal force of the frame (second-order calculation) considering the lateral displacement of nodes, adopts a stepwise asymptotic method, estimates the displacement with an equivalent single-column frame in each round, and then iteratively calculates the original frame to calculate The stiffness of the internal force correction rod is used for the next round of calculation until the two calculation results are close. In this paper, an iterative formula for the rigid frame with axial force members is deduced and an example problem is calculated. The calculation results show that the calculation converges rapidly. This article’s calculation method can be calculated using a calculator