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   孫洪剛¹，  蘇  磊²，  黃  云³
   （1 江蘇新城地產(chǎn)股份有限公司，上海 200063；2 北京賽博思建筑設計有限公司，北京 100037；3 上海振華重工（集團）股份有限公司，上海 200125）

[摘要] 采用ANSYS軟件分析了一大跨度雜交結構在多維地震作用下結構的動力反應。優(yōu)化鋼棒預應力，考慮索單元的非線性特征，并分析比較鋼棒不同預應力取值下屋蓋結構的整體動力響應。計算結果對類似工程有一定參考價值。
[關鍵詞] 雜交結構；預應力；優(yōu)化；動力響應
中圖分類號：TU318    文獻標識碼：A  文章編號：1002-848X(2012) Sl-0662-03

Nonlinear dynamic analysis on steel roof of a large-span hybrid structure
Sun Honggang¹, Su Lei², Huang Yun³
(1 Jiangsu Future Land Co., Ltd., Shanghai 200063, China; 2 Beijing SBS Architectural Design Co., Ltd., Beijing 100037, China; 3 Shanghai Zhenhua Heavy Industry Co., Ltd., Shanghai 200125, China)

Abstract: The dynamic response of a large-span hybrid structure under multi-dimensional seismic effect was carried out with the finite element analysis software ANSYS. The prestressed of the steel bars were optimized. Considering the nonlinear characteristics of the cable unit, the overall dynamic responses of the roof structure were compared under different prestressed values. The results can be referenced for similar projects.
Keywords: hybrid structure; prestress; optinuzation; dynamic response