There are four key points of plate spiral stair design, and they are model building, inner force calculation, overall stability analysis and joints design between the stair and the main structure.
对板式钢结构旋转楼梯的有限元计算进行了全面的分析，并对其与主体结构的连接节点进行了设计。
Calculation of the design including alignment design, the overall design, and the lower part of the structure calculations.
本设计计算包括选线设计，整体设计，和下部结构的计算。
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