徐凌峰，  柯一沙，  王正刚，  赵  勇，  周承涛，  翁晓松
    （汉嘉设计集团股份有限公司，杭州 310016）

[摘要] 华润新鸿基杭州钱江新城万象城楼盖中整体采用预应力混凝土结构，双向预应力承担楼盖竖向受力和楼盖温差收缩应力的作用；主体结构功能复杂，存在大量柱转换、大悬挑、大空间，内椭圆中庭为斜柱上盖桁架柱支撑玻璃天窗，斜柱采用钢管叠合柱，斜柱中庭顶主受力体系采用六根钢箱梁平面编织，切割出直径25m中无梁穿过的屋顶天窗留洞，通过对其结构分析和设计，提出了钢管叠合柱与钢箱梁的连接节点，可供类似工程设计参考。
[关键词] 商业中心；楼盖整体预应力；钢管叠合柱；平面编织钢箱梁
中图分类号：TU398    文献标识码：A    文章编号：1002-848X(2011) Sl-0416-06

Structure design of MIXC Mallin Qianjiang New City of Hangzhou by CR-SHK
    Xu Lingfeng, Ke Yisha, Wang Zhenggang, Zhao Yong, Zhou Chengtao, Weng Xiaosong
    ( Hanjia Design Group of China, Hangzhou 310016, China)

Abstract: The roof of the MIXC Mall, which is located in Qianjiang New City of Hangzhou, is a pre-stressed concrete structure. The two-way pre-stress is affected by verticalload and sMnkage force due to temperature difference in the roof. The main structure functions complexly and there exists a large number of column switclung, big cantilever and large space. The oval atrium inside uses truss column covering the inclined column to support glass skylights. The inclined column adopts composite steel columns and at the top of the atrium of inclined columns, the main force system is knitted flat with six steel box girders, which allow for a skylight hole about 25m in diameter without beams on the roof. On the basis of structure analysis and design, put forward a connected node of composite steel columns and steel box girders, which can serve for reference for similar structure design.
Keywords: business center; overall pre-stress of roof; composite steel columns; knit flat steel box girders