摘要
本文利用拟板法对正交正放类、两向斜放类和三向类网架的动力问题进行了研究，导出了一般的振动控制方程。在四边简支的边界条件下，振动方程的解可利用双重级数为试函数求得。而对竖向地震作用下的解也可用类似的方法得到，其计算公式中的相应系数与《建筑抗震设计规范（ＧＢＪ１１－８９）》中的系数相似，并可利用竖向地震反应谱求得。最后，本文给出了求解网架杆件的竖向地震内力的公式。
Abstract In this paper,the dynamic problems of three kinds of space trusses are studied and the general vibration equations are derived by the plate analogy method.In the case of simply supported space trusses,thesolution of vibration equations can easily be calculated by using a function of a double trigonometric series.When vertical earthquake wave applied on the space trusses,the solution shall be given similarly.The coefficient in the formulas can be obtained by using the vertical seismic response spectrum method.Finally,theformulas for calculating internal forces of members of space trusses under vertical earthquake are derived.
出处
《空间结构》
CSCD
1995年第3期42-52,共11页
Spatial Structures
