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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(shè)計(jì)有限公司，北京 100037；3 上海振華重工（集團(tuán)）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(jié)構(gòu)在多維地震作用下結(jié)構(gòu)的動(dòng)力反應(yīng)。優(yōu)化鋼棒預(yù)應(yīng)力，考慮索單元的非線性特征，并分析比較鋼棒不同預(yù)應(yīng)力取值下屋蓋結(jié)構(gòu)的整體動(dòng)力響應(yīng)。計(jì)算結(jié)果對類似工程有一定參考價(jià)值。
[關(guān)鍵詞] 雜交結(jié)構(gòu)；預(yù)應(yīng)力；優(yōu)化；動(dòng)力響應(yīng)
中圖分類號(hào)：TU318    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：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