“密柱”型框架-核心筒结构体系的应用
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（中国建筑设计院有限公司， 北京 100044）
［摘要］为考察外围框架柱间距大于4m、小于8m的框架-核心筒结构的性能，对结构高度300m、抗震设防烈度7度（0.10g）、框架柱间距4~8m的框架-核心筒结构的算例进行研究。分析表明，柱间距4～6m的框架-核心筒结构的周边框架虽未构成刚度可观的框筒，但抗侧刚度不容忽视，若设计得当，这类高度的框架-核心筒结构完全不必设置加强层。借助一工程实例介绍了这类结构体系的实际应用情况，南京青奥中心双塔楼中的塔2楼建筑高度314.50m，采用外围框架柱间距6m的“密柱”型框架-核心筒结构体系，设计中取消了加强层的设置，从而避免结构刚度的竖向突变，提高了结构的抗震性能，降低了施工复杂度，较大地节省工期，满足了业主对工程进度的要求。［关键词］南京青奥中心; 筒体结构; “密柱”型框架-核心筒结构; 高层建筑结构; 加强层中图分类号：TU973.1 文献标识码：A 文章编号：1002-848X(2016)11-0009-06
Application of dense columns frame-corewall structural systemLiu Wenting, Ren Qingying, Zhao Qingyu(China Architecture Design Institute Co., Ltd., Beijing 100044, China)Abstract: The structural behaviors of the frame-corewall structures with the outer column spacing between 4m and 8m were studied. A series of high-rise building models of frame-core structural system with structural height of 300m and column spacing of 4~8m were studied under the 7 degree seismic intensity region (0.10g). It indicates that the lateral stiffness of the frame-corewall system with the column spacing between 4m and 6m is not negligible, though the external frame does not form a considerable frame-tube. The practical application conditions of this kind of structural system were introduced through an engineering project. The Tower 2 in twin towers of Nanjing Youth Olympic Center project has architectural height of 314.50m and adopts the dense columns frame-corewall structural system with external column spacing of 6m. The strengthening layer is not applied in the project to avoid abrupt change in stiffness, improve seismic performance of the structure, lower construction complexity, shorten the construction time and meet the client's requirement on construction progress.
Keywords: Nanking Youth Olympic Center; tube structure; dense columns frame-corewall structure; high-rise building structure; strengthening layer.
作者简介：刘文珽，博士，高级工程师，一级注册结构工程师，Email：lfrankly@163.com。
