| 梁铰型屈服RC框架结构地震弹塑性位移增大系数研究 |
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| 引用本文： | 蔡健,周靖,方小丹.梁铰型屈服RC框架结构地震弹塑性位移增大系数研究[J].地震工程与工程振动,2007,27(5):48-54. |
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| 作者姓名： | 蔡健 周靖 方小丹 |
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| 作者单位： | 1. 华南理工大学,土木系,广东,广州,510640
2. 华南理工大学,土木系,广东,广州,510640;湘潭大学,土木系,湖南,湘潭,411105 |
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| 基金项目： | 广东省自然科学基金项目(020965) |
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| 摘 要： | 本文通过弹性和弹塑性时程分析,研究了水平地震作用下梁铰型屈服RC框架模型结构的楼层屈服剪力系数、基本自振周期、楼层数3个因素对弹塑性位移增大系数的影响,通过非线性回归分析给出了弹塑性层间位移增大系数经验公式;通过分析滞回耗能沿楼层高度的分布,初步确定了梁铰型屈服RC框架结构的薄弱楼层位置;基于结构损伤分析,讨论了抗震规范中RC框架结构弹塑性层间位移角限值的水准。
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| 关 键 词： | 梁铰 钢筋混凝土框架 弹塑性 层间位移增大系数 |
| 文章编号： | 1000-1301（2007）05-0048-07 |
| 修稿时间： | 2007-02-05 |
Seismic inelastic displacement amplification factor for beam-hinge mechanism RC frame |
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| CAI Jian,ZHOU Jing,FANG Xiaodan.Seismic inelastic displacement amplification factor for beam-hinge mechanism RC frame[J].Earthquake Engineering and Engineering Vibration,2007,27(5):48-54. |
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| Authors: | CAI Jian ZHOU Jing FANG Xiaodan |
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| Institution: | 1. Department of Civil Engineering, South China University of Technology, Guangzhou 510640,China; 2. Architecture Design and Research Institute, South China University of Technology, Guangzhou 510640,China |
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| Abstract: | This paper studies,by elastic and inelastic time-history analysis,the influence of story yielding shear force factors,fundamental periods of structures and number of story on inelastic inter-story displacement amplification factors computed for beam-hinge mechanism RC frame model when subjected to horizontal earthquake ground motions.The simplified functional expressions of the inelastic inter-story displacement amplification factors are proposed by a statistical regression analysis.The expressions can be used to estimate the inelastic inter-story displacements based on the elastic inter-story displacements within larger scope of parameters.The weak story is suggested by analyzing the distribution of hysteretic energy in height of story. Furthermore,the maximum inter-story angle limit for RC frame in China seismic code is discussed by damage based analysis. |
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| Keywords: | beam-hinge RC frame inelastic inter-story displacement amplification factor |
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