蒋济同，  董  坤，  杜德润
    （中国海洋大学土木工程系，青岛 266100）

[摘要] 钢结构直接加层形成的混合结构在分析设计上尚无统一的规范标准可循，导致各地钢结构加层工作采用的方法很不一致。结合钢结构加层质量和刚度突变特点，讨论了钢结构加层中存在的整体抗震分析、阻尼修正、年限统一和规范选择问题，总结了一套较为合理的分析设计方法以供参考。
[关键词] 钢结构；加层；抗震分析；标准选择
中图分类号：TU391    文献标识码：A  文章编号：1002-848X(2011) Sl-0108-05

Discussion on the seismic design of structures direct added with steel structure
Jiang Jitong, Dong Kun, Du Derun
(Department of Civil Engineering, Ocean University of China, Qingdao 266100, China)

Abstract: Because of lacking of a universal standard criterion on analysis and design for the composite structure, which formed by the direct storey-adding method with steel structure, there are a variety of methods around the work of the storey-adding. Based on the mass and stiffness mutation feature of the composite structure, the questions about seismic analysis, damping correction, the unity oflife and standard choice were discussed. Finally,a set of relatively reasonable analysis and design method for reference was summarized.
Keywords: steel structure; storey-adding; seismic analysis; standard choice