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以弯曲变形为主的塔形结构,除其主振频率可用顶点位移法近似计算外,要作进一步的高振型分析,一般都用矩阵理论;需计算大量的位移影响系数,并用电子计算机求解。当结构为变截面时,位移影响系数的计算,更为繁琐。这里介绍利用“程序计算器”计算的递推计算法,较为简单实用。当结构作简谐振动时,各质点之内力及位移,均按同一正弦函数作周期变化,因此,在考虑结构内力平衡时,除了增加惯性力这个因素外,其他均可按静力条件进行。豪塞尔法
For the tower-shaped structure with bending deformation, except that the main vibration frequency can be approximated by the vertex displacement method, further analysis of high-mode vibration is required. The matrix theory is generally used; a large number of displacement-influencing factors have to be calculated and solved by an electronic computer. . When the structure is a variable cross section, the calculation of the displacement influence coefficient is more tedious. The recursive calculation method using “program calculator” is introduced here, which is simple and practical. When the structure is simply harmonically vibrated, the internal force and displacement of each particle are periodically changed according to the same sinusoidal function. Therefore, when considering the internal force balance of the structure, besides increasing the inertial force, other factors may be performed according to static conditions. Hauserfa