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    曹偉良，  任  旭，  王錦文，  郭永興，  項  兵
    （深圳華森建筑與工程設計顧問有限公司，深圳 518054）

[摘要] 本文結合工程項目，研究了底部為多層混凝土框架、頂部為鋼結構框架的結構體系，由于上下不同材料導致不同阻尼比，在地震作用下，不同結構的地震反應和頻譜特性。并分析了結構體系整體上在不同阻尼比下的結構地震時程響應。為最終確定結構設計安全度提供了重要依據。
[關鍵詞] 不同材料；阻尼；地震；頻譜特性；框架結構
中圖分類號：TU318  文獻標識碼：A  文章編號：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