填充抗震墙加固既有框架结构的抗震性能分析

发布时间：2018-04-02 10:10

本文选题：框架结构　切入点：抗震墙　出处：《建筑科学》2017年11期

【摘要】：为了研究在既有框架结构底部加填充抗震墙这一加固形式的抗震性能,结合以往试验研究,本文在不改变原有框架抗震等级的情况下,使用有限元分析软件SAP2000,通过模态分析、反应谱分析、动力时程分析,分析在既有框架结构底部加填充抗震墙对提高结构抗震能力的作用,探讨加固的最优方案,并分析罕遇地震下框架结构加固前后塑性铰的变化情况。通过研究发现:在框架结构底部两层由下而上递减布置抗震墙的形式对提高底部存在薄弱层的框架结构抗震性能的效果明显;能够有效减小结构在地震作用下的层间位移,减少结构在罕遇地震下塑性铰的产生和发展,是一种经济可行的加固方法。
[Abstract]:In order to study the seismic behavior of the existing frame structure with infilled seismic wall at the bottom of the existing frame structure, combined with the previous experimental research, this paper uses the finite element analysis software SAP2000, through modal analysis, without changing the seismic grade of the existing frame. Response spectrum analysis, dynamic time-history analysis, analysis of the effect of adding filled seismic wall to the bottom of existing frame structure to improve the seismic capacity of the structure, and the discussion of the optimal reinforcement scheme. The change of plastic hinge before and after reinforcement of frame structure under rare earthquake is analyzed. Through the study, it is found that the form of anti-seismic wall arranged from the bottom of the frame structure from the bottom to the bottom is decreasing from the bottom to the top of the frame structure, which can improve the frame structure with weak floor at the bottom. The effect of seismic performance is obvious; It is an economical and feasible method to reduce the interstory displacement of structure under earthquake and to reduce the generation and development of plastic hinge under rare earthquake.
【作者单位】：内蒙古科技大学土木工程学院;
【基金】：内蒙古自治区自然科学基金:工业厂房不良振动控制及振动疲劳寿命预测(2015MS0552)
【分类号】：TU352.11

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