孙洪刚¹，  苏  磊²，  黄  云³
   （1 江苏新城地产股份有限公司，上海 200063；2 北京赛博思建筑设计有限公司，北京 100037；3 上海振华重工（集团）股份有限公司，上海 200125）

[摘要] 采用ANSYS软件分析了一大跨度杂交结构在多维地震作用下结构的动力反应。优化钢棒预应力，考虑索单元的非线性特征，并分析比较钢棒不同预应力取值下屋盖结构的整体动力响应。计算结果对类似工程有一定参考价值。
[关键词] 杂交结构；预应力；优化；动力响应
中图分类号：TU318    文献标识码：A  文章编号：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