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本文用多层子结构与群论算法相结合的结构分析程序JIGFEX(Q),对具有C(?)群对称性的钢筋混凝土储油罐平台进行了内力计算。在凝聚消去内部自由度后,选择与C(?)群相吻合的组合位移作未知数,使原问题分裂成6个互不耦合的子问题:然后按本文给出的有效子问题的概念,由实际荷载分布又进一步将问题缩减成3个子问题。本文还探讨了波浪荷载转化为节点荷载以及土壤地基的模型化问题。
In this paper, the structural analysis program JIGFEX(Q) combined with the multi-layer sub-structure and group theory algorithm is used to calculate the internal forces of a reinforced concrete oil storage tank platform with C(?) group symmetry. After the aggregation eliminates the internal freedom, the combined displacements that are consistent with the C(?) group are chosen as unknowns to split the original problem into six mutually uncoupled subproblems: Then, according to the concept of an effective subproblem given in this paper, The actual load distribution further reduces the problem into three sub-problems. This paper also discusses the modelling of wave loads into nodal loads and soil foundations.