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本文研究并提出了网架-平板组合结构的简化分析方法。这种分析方法是将组合结构的平板部分,根据各种不同形式的网架折算为四组或三组平面交叉杆系,从而使这种比较复杂的组合结构转化为一个等代空间铰接杆系结构,由一般空间桁架位移法直接进行计算。文中详细地讨论了两向正交类网架、两向斜交类网架、三向类网架及蜂窝形三角锥网架等各种网架-平板组合结构的具体计算方法,并给出了相应的等代杆系刚度和板中内力的计算公式,并且附有算例。
This paper studies and proposes a simplified analysis method for the grid-plate composite structure. This analysis method is to convert the flat part of the composite structure into four or three groups of plane crossbar systems according to various different types of grids, so that this relatively complex combination structure is converted into an equal generation space hinged linkage system. The structure is directly calculated by the general space truss displacement method. The paper discusses in detail the specific calculation methods of various grid-plate composite structures, such as two-dimension orthogonal grids, two-diagonal oblique grids, three-way grids, and honeycomb-shaped triangular cone grids. Corresponding equivalent rod system stiffness and the calculation formula of the internal force in the plate, with examples.