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框架填充墙结构被动控制抗震加固分析

, PP. 17-26

Keywords: 框架填充墙结构,阻尼器,抗震加固,性态抗震

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Abstract:

针对不满足抗震性态目标的一栋四层钢筋混凝土框架填充墙结构,基于框架和填充墙的抗震性态目标,采用附加阻尼器的被动控制方法进行抗震加固分析研究.首先,提出两种被动控制加固方案1.在一层所有填充墙平面内方向上并联阻尼器进行抗震加固;2.在一层和二层所有填充墙平面内方向上并联阻尼器进行抗震加固;其次,基于OpenSees有限元软件,建立上述两种被动控制加固方案的有限元模型,选取ElCentro、Parkfield和SanFenando三条地震动进行罕遇地震作用下的地震反应分析;最后,依据使用功能为钢筋混凝土框架填充墙结构抗震性态目标的量化指标,即综合考虑层间位移角限值和填充墙破坏情况,判定四层钢筋混凝土框架填充墙结构采用加固方案二可满足抗震性态目标的要求.

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