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介绍２１世纪大厦钢结构设计，包括结构体型选取、结构分析方法及结果、钢框架的设计及节点连接方式、工程技术经济指标等。
This paper introduces the design of steel structure in 21 st century building, including the choice of structure type, the method and result of structural analysis, the design of steel frame, the way of connection of nodes, the engineering technical and economic indexes.