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基于加权残值法的概念,本文提出一种分析结构物动力响应的无条件稳定的计算格式可用于分析周边简支圆柱形网壳的动力响应问题。网壳肋杆中的内力应用拟壳法作连续化处理计算得到。文中举计算实例并与Wilson-θ法相较非常接近。文中对于本文提出的计算格式的稳定性及精度进行了讨论及检验,又通过实例进行计算,证明本文方法稳定性,精度较Wilson-θ法等常规方法较高而工作量较少。可以作为分析结构物包括网壳在内的动力响应有效方法之一。
Based on the concept of the weighted residual method, this paper presents an unconditionally stable computational format for analyzing the dynamic response of a structure. It can be used to analyze the dynamic response of a simply supported cylindrical reticulated shell. The internal forces in the cage shells are calculated by applying the pseudo-shell method for continuous treatment. In the paper, the calculation examples are compared with the Wilson-θ method. In this paper, the stability and precision of the proposed calculation format are discussed and tested. The calculations are also performed by examples. It is proved that the method is more stable than the conventional methods such as the Wilson-θ method and the workload is less. It can be used as one of the effective methods to analyze the dynamic response of structure including reticulated shell.