（同济大学建筑设计研究院（集团）有限公司， 上海 200092）

［摘要］咸阳市大剧院是高烈度地震区形体复杂的超限高层建筑。通过采用抗震性能设计方法并选用适宜的抗震性能目标，运用双向正交型钢混凝土转换桁架结构布置方案，有效解决了工程中的大悬挑、大跨度、竖向转换等结构难题。采用MIDAS Building程序对主体结构进行罕遇地震作用下的弹塑性时程分析，通过控制桁架构件截面尺寸、调节构件的配筋率及含钢率，有效实现了型钢混凝土转换桁架罕遇地震不屈服的性能目标。

［关键词］高层建筑； 大悬挑； 大跨度； 竖向转换； 抗震性能设计； 型钢混凝土转换桁架

中图分类号：TU318， TU398       文献标识码：A       文章编号：1002-848X(2015)07-0095-05

Structural design and analysis of bidirectional orthogonal steel reinforced

concrete transfer trusses

of Xianyang Grand Theater

Xu Weidong

 (Tongji Architectural Design (Group) Co., Ltd., Shanghai 200092, China)

Abstract:Xianyang Grand Theater is an outofcode highrise building with complex shape which is located in high seismic intensity region. By using the method of performancebased seismic design and selecting suitable seismic performance objectives, with the application of structural layout scheme of bidirectional orthogonal steel reinforced concrete transfer trusses, the structure problems such as large cantilever, large span, vertical transfer, etc. were solved effectively. By applying the program of MIDAS Building, the elastoplastic timehistory analysis of major structure under the rare earthquake was studied. And by means of controlling the section size of truss members, regulating the reinforcement ratio and steel ratio of truss members, the seismic performance objective of unyielding design of steel reinforced concrete transfer trusses under rare earthquake was achieved.

Keywords:highrise building; large cantilever； large span; vertical transfer； performancebased seismic design; steel reinforced concrete transfer truss

作者简介：徐伟栋，硕士，工程师，一级注册结构工程师，Email: witten_shu@163.com。

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