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(華東建筑設計研究院有限公司, 上海 200011)
[摘要]建筑物中設置耗能阻尼器能有效地耗散地震能量,降低結構的地震作用,避免或減小主體結構的損傷。金屬阻尼器和黏滯阻尼器對地震作用下的結構具有較好的減震效果,在國內外項目中得到了廣泛應用?;诠こ虒嵗?,對在結構中設置單一阻尼器和同時設置位移相關型和非線性速度相關型阻尼器的兩種不同的消能減震方案進行反應譜和動力時程分析,通過對附加阻尼比、層間位移角、層剪力、阻尼器抗震性能等參數的對比,比較各方案的減震效果,并提出相關的設計要點,為消能減震設計提供有益的參考。
[關鍵詞]金屬阻尼器; 黏滯阻尼器; 附加阻尼比; 消能減震; 動力時程分析
中圖分類號:TU318, TU352文獻標識碼:A文章編號:1002-848X(2017)12-0029-07
Study on application of co-working of metallic and viscous dampers in design of frame structures
Yang Qin, Cui Jiachun, Xu Jidong, Xu Ziran
(East China Architectural Design & Research Institute Co., Ltd., Shanghai 200011, China)
Abstract:Arranging the energy-dissipated dampers in the buildings can effectively dissipate seismic energy, reduce seismic action on the structure and avoid or reduce the damage on the main structure. Under the seismic action, the metallic damper and viscous damper have good damping effect on the structure and have been extensively used at home and abroad. Based on the engineering example, analysis of response spectrum and dynamic time-history analysis were conducted on two different energy dissipation schemes including a scheme with a single damper and a scheme with both displacement dependent and nolinear velocity dependent dampers. By comparing parameters of additional damping ratio, interlayer displacement angle, layer shear and seismic performance of dampers, damping effects of the schemes were compared, and related design points were proposed to provide a useful reference to energy dissipation design.
Keywords:metallic damper; viscous damper; additional damping ratio; energy dissipation; dynamic time-history analysis
*國家自然科學基金項目(51478356)。
作者簡介:楊欽,碩士,高級工程師,Email:qin_yang@arcplus.com.cn。