曹伟良，  任  旭，  王锦文，  郭永兴，  项  兵
    （深圳华森建筑与工程设计顾问有限公司，深圳 518054）

[摘要] 本文结合工程项目，研究了底部为多层混凝土框架、顶部为钢结构框架的结构体系，由于上下不同材料导致不同阻尼比，在地震作用下，不同结构的地震反应和频谱特性。并分析了结构体系整体上在不同阻尼比下的结构地震时程响应。为最终确定结构设计安全度提供了重要依据。
[关键词] 不同材料；阻尼；地震；频谱特性；框架结构
中图分类号：TU318  文献标识码：A  文章编号：1002-848X(2011) Sl-0090-06

Different material damping ratio frame earthquake response research of Chengdu Ecology Headquarter Offices
Cao Weiliang, Ren Xu, Wang Jinwen, Guo Yongxing, Xiang Bin
( Huasen Architecture&Engineering Design Consultants Ltd., Shenzhen 518054, China)

Abstract: This article combined the engineering project, studied the multi-layered concretes frame with the crown for the steel structure frame. Because the different material causes the different damping ratio up and down, under earthquake, different structure earthquake response and frequency spectrum characteristic was proposed. And earthquake time-history response was analyzed in the structure system under the different damping ratio structure. The importance basis of security was also provided in the structural design.
Keywords: different material; damping ratio; earthquake; frequency spectrum characteristic; frame