王  华，徐慧芳，陈  栋，葛  雯
(华东建筑设计研究院有限公司，上海200002)

[摘要] 东方之门北裙房为一栋八层高的综合性超大型商业大楼，采用混凝土纯框架结构体系。由于建筑功能平面的布局，以及楼板局部不连续，导致结构平面不规则。另外，在六层处高位内收，引起结构竖向不规则。通过对屋盖钢桁架进行分离计算的简化设计，以及对大量夹层的优化处理和加强节点构造措施，来调整不规则体型对结构受力的总体影响，并解决结构的超限问题。
[关键词] 不规则复杂框架；大跨钢屋盖；节点构造；悬吊夹层

    Structure Design of the Northern Podiums in Orient Gate
    Wang Hua, Xu Huifang, Chen Dong, Ge Wen
    ( East China Architectural Design & Research Institute Co. , Ltd., Shanghai 200002, China)

Abstract: The process of concrete frame structural design for the northem podiums comprehensive shopping mall building with 8 - story was introduced in this paper. The architectural planning and floor partial discontinuity required, and the width size above six lays of high altitude narrowed, which belonged to irregular shape structure. The separating calculation and sampling design method for the steel truss roof was reasonable established and many suspended interlays was optimized and jointed. In the end it reduced the influence by the irregular shape when earthquake occurs. And the problem beyond the code limit was solved effectively.
Keywords: irregular and complex frame; long-span steel roof; joint connection, suspended interlay structure