Journal of Hebei University of Water Resources and Electric Engineering

Journal of Hebei University of Water Resources and Electric Engineering ›› 2019, Vol. 29 ›› Issue (1): 1-9.DOI: 10.16046/j.cnki.issn2096-5680.2019.01.001

• Technology Theory and Application •     Next Articles

Study on Seismic Reinforcement Measures and Schemes of Irregular Frame Structures

FENG Zi-yu1,YANG De-jian1,2,WANG Xiao-nan1   

  1. 1.School of Civil Engineering,Tianjin Chengjian University,300384,Tianjin,China;
    2.The Key Laboratory for Protection and Reinforcement in Civil Engineering,300384,Tianjin,China

  • Received:2018-10-24 Online:2019-03-31 Published:2019-04-30

不规则框架结构抗震加固措施与加固方案研究

冯子煜1，杨德健1，2，王笑楠1   

  1. 1.天津城建大学土木工程学院，天津市西青区津静路26号 300384;
    2.天津市土木建筑结构防护与加固重点实验室，天津市西青区津静路26号 300384

  • 通讯作者: 杨德健(1962-)，男，工学博士，天津城建大学教授，硕士生导师，主要研究领域为结构抗震､混凝土与砌体结构新型结构体系及结构检测与加固等｡E-mail:451016763@qq.com
  • 作者简介:冯子煜(1992-)，男，硕士，主要研究方向为结构工程加固｡
  • 基金资助:
    国家自然科学基金项目(51108301);; 天津市自然科学基金项目(15JCYBJC18900)

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Abstract: In this paper,the SAP2000finite element analysis software was applied to model the original frame of an existing irregular plane framework in Tianjin and the elastic-plastic time-history was analyzed.The BRB damping and anti-torsional reinforcement scheme was proposed based on the analysis results and the characteristics of the project.Compared with the original frame,the period ratio of BRB frame was reduced by 26%,torsional displacement ratio was decreased by 15%;decreasing of inter-story displacement angle could reach 31%and the maximum displacement angle of the top layer could be controlled within the scope of the code.The results indicate that BRB not only increases the anti-lateral stiffness of the structure,but also improves the seismic performance of the structure,which is an effective approach to control torsional effect of irregular structures.

Key words: irregular plane, frame structure, time-history analysis, BRB, seismic reinforcement

摘要： 以天津市某既有平面不规则框架建筑为研究对象,运用SAP2000有限元分析软件对原结构建模并进行弹塑性时程分析,依据分析结果及该工程自身特点,提出了BRB支撑减震抗扭加固方案;将BRB支撑结构与原结构在不同地震波作用下的抗震加固效果进行比较,BRB支撑结构的周期比减小了26%,扭转位移比减小了15%,层间位移角减小幅度可达31%,顶层最大位移也可以控制在规范要求的范围内。研究结果表明,BRB支撑不仅增加了结构的抗侧移刚度,而且提高了结构的抗震性能,是一种控制不规则结构扭转效应的有效措施。

关键词: 平面不规则, 框架结构, 时程分析, BRB支撑, 抗震加固

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