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提出了一种依附连续或半离散半连续方法的二阶效应方法,利用弯距等效原理,将竖力对水平位移的作用化为附加的水平分布力,这样,就可以利用一阶分析的方法进行二阶分析,使得二阶分析方法简单易行。将计算几何中的样条参数方法引入结构分析中,并以此对有限条进行改进,本文对条元不再划分内结线,但可以利用本条元及相邻条元的竖向位移参数形成局部坐标下的竖向位移参数曲线,并以此作为竖向位移的插值函数,故该法的精度较好。
A second-order effect method based on continuous or semi-discrete semi-continuous method is proposed. Using the principle of bending distance equivalence, the effect of vertical force on horizontal displacement is converted into additional horizontal distribution force. In this way, first-order analysis can be used. The second-order analysis of the method makes the second-order analysis method simple and easy. The method of calculating the spline parameters in geometry is introduced into the structural analysis, and the finite strip is improved. In this paper, the strip element is no longer divided into internal lines, but it can be formed by using the vertical displacement parameters of the element and adjacent elements. The vertical displacement parameter curve in local coordinates is used as the vertical displacement interpolation function, so the accuracy of this method is better.