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（同濟大學建筑設計研究院（集團）有限公司， 上海 200092）

［摘要］咸陽市大劇院是高烈度地震區(qū)形體復雜的超限高層建筑。通過采用抗震性能設計方法并選用適宜的抗震性能目標，運用雙向正交型鋼混凝土轉(zhuǎn)換桁架結(jié)構布置方案，有效解決了工程中的大懸挑、大跨度、豎向轉(zhuǎn)換等結(jié)構難題。采用MIDAS Building程序?qū)χ黧w結(jié)構進行罕遇地震作用下的彈塑性時程分析，通過控制桁架構件截面尺寸、調(diào)節(jié)構件的配筋率及含鋼率，有效實現(xiàn)了型鋼混凝土轉(zhuǎn)換桁架罕遇地震不屈服的性能目標。

［關鍵詞］高層建筑； 大懸挑； 大跨度； 豎向轉(zhuǎn)換； 抗震性能設計； 型鋼混凝土轉(zhuǎn)換桁架

中圖分類號：TU318， TU398       文獻標識碼：A       文章編號：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

作者簡介：徐偉棟，碩士，工程師，一級注冊結(jié)構工程師，Email: witten_shu@163.com。

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