【摘要】 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更多还原

【Abstract】 An approximate method on the analysis of rigid frame structures considering the side-sway effect is suggested in this paper.Iteration method is used.For each cycle,the iteration is started on the original frame by using initial estimated displacements of equivalent single column frame.The next cycle is started by using the revised member stiffnesses which are based on the calculated bending moment of the last cycle.Carry on the reiteration until the calculated results of two consecutive cycles are close enough. The iteration formulas for the frames composed of members with axial forces are derived in this paper,and a numerical example is presented.The results of this example indicates that the convergence of the calculation is very fast. The method suggested in this paper can be calculated with calculator.更多还原