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推导了预应力网壳结构在正常使用阶段的预应力索单元的特性矩阵。比较分析表明 ,与以前使用的索元公式相比 ,新导算式更适合于预应力网壳结构的分析
The characteristic matrix of prestressed cable unit in normal use stage is deduced. The comparative analysis shows that the new formula is more suitable for the analysis of prestressed reticulated shell structure