运用防屈曲支撑的混凝土框架结构的抗震性能研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
简要介绍地震安全社区的实现途径以及防屈曲支撑的构成和性能参数。运用ABAQUS软件对有无安装防屈曲支撑的钢筋混凝土框架模型进行动力时程分析,总结分析防屈曲支撑对钢筋混凝土框架结构的减震效果。结果表明,防屈曲支撑能大大降低钢筋混凝土框架结构在罕遇地震作用下的层间位移角,提高建筑物抗震性能,使地震安全社区中抗震设防烈度为Ⅶ度的建筑物能够抵御Ⅷ度罕遇地震。
This article briefly introduces the seismic safety community and the composition and performance parameters of buckling-restrained braces.The seismic safety community is the community that experiences small destructive earthquakes.Specifically,these communities have carried out effective seismic fortification of all buildings in compliance with seismic hazard regulations.In the seismic safety community,improving the seismic performance of buildings is the primary goal.Local seismic fortifications meet the minimum seismic requirements,and the level of fortification of buildings is increased using certain technical measures.The traditional method of seismic fortification is to increase the size of major structural components,such as beams,columns,and shear walls,and to improve the ratio of reinforcements to buildings.However,increasing the amount of material increases cost and reduces the usable area of buildings.The new method calls for change to the seismic characteristics of the structure itself and improvements to its capacity for energy dissipation through the use of isolation and dissipation technologies.In the structural system,the seismic sections generally remain the same,and cost increases are small.Buckling-restrained braces have gained widespread application as measures for energy dissipation and earthquake resistance.They also overcome the disadvantages of traditional energy dissipation braces.The component's full section will yield during compression,effectively minimizing local buckling failure and overall buckling failure.Therefore,the energy dissipation capacity of the components is maximized and the seismic response of the structure is reduced.The Dalian Aonan Mingxiu manor project described in the paper is a pilot project undertaken in the Dalian earthquake safety community.The project addresses building security and earthquake safety at the design stage.By installing buckling-restrained braces,the seismic characteristics of the structure itself are changed.To determine whether the structure can achieve the goals of seismic fortification,the project conducts an elastic-plastic analysis by installing buckling-restrained braces in the original frame structure.In this study,the ABAQUS software was used to conduct the dynamic and time-history analysis of two models of reinforced concrete framework:the origin structure and the structure with buckling-restrained braces added.The shock absorption effects of the buckling-restrained braces were analyzed.The results of the analysis showed that buckling-restrained braces could significantly reduce the inter-storey drift angle of a reinforced concrete frame during rare earthquakes and improve the level of seismic fortification buildings.
引文
[1]李鑫,郭安宁,焦娇.地震灾害经济易损性评估研究——以甘肃省为例[J].西北地震学报,2012,34(3):284-288.LI Xin,GUO An-ning,JIAO Jiao.Assessment of Economic Vulnerability Caused by Earthquake Hazard——Taking Gansu Provinece as an Example[J].Northwestern Seismological Journal,2012,34(3):284-288.(in Chinese)
    [2]李慧,包超,杜永峰.近场地震作用下不规则层间隔震结构的动力响应分析[J].地震工程学报,2013,35(1):51-55.LI Hui,BAO Chao,DU Yong-feng.Dynamic Response Analysis of Irregular Story Isolation Structures under Near-field Earthquake Conditions[J].China Earthquake Engineering Journal,2013,35(1):51-55.(in Chinese)
    [3]周云.防屈曲耗能支撑结构设计应用[M].北京:中国建筑工业出版社,2007:1-2.ZHOU Yun.Application of the Buckling Restrained Brace in Structural Design[M].Bejing:China Building Industry Press,2007:1-2.(in Chinese)
    [4]钱洪涛,褚洪明,邓雪松.防屈曲支撑的研究与应用进展[J].防灾减灾工程学报,2007,27:225-233.QIAN Hong-tao,CHU Hong-ming,DENG Xue-song.Progress in Research and Application of Buckling Restrained Brace[J].Journal of Disaster Prevention and Mitigation Engineering,2007,27:225-233.(in Chinese)
    [5]蔡克铨,黄彦智,翁崇兴.双管式挫屈束制(屈曲约束)支撑之耐震行为与应用[J].建筑钢结构进展,2005,7(3):1-8.CAI Ke-quan,HUANG Yan-zhi,WENG Cong-xing.Seismic Performance and Applications of Double-tube Buckling-restrained Braces[J].Progress in Steel Building Structures,2005,7(3):1-8.(in Chinese)
    [6]CHEN Cheng-cheng.Recent Advances of Seismic Design of Steel Buildings in Taiwan[R].Taiwan:National Center for Research on Earthquake Engineering,2002:105-123.
    [7]王奇,干钢,方鸿强.某防屈曲支撑框架结构弹塑性时程分析[J].建筑结构,2012,42(11):44-48.WANG Qi,GAN Gang,FANG Hong-qiang.Elasto-plastic Time History Analysis on a Buckling-restrained Braced Frames[J].Building Structure,2012,42(11):44-48.(in Chinese)
    [8]Jeffrey Berman,Michel Bruneau.Cyclic Testing of a Buckling Restrained Braced Frame with Unconstrained Gusset Connection[J].Journal of Structural Engineering,2009,135(12):1499-1510.
    [9]姚楠,郑廷银,杨菊.约束屈曲支撑耗能性能有限元分析[J].江苏建筑,2010(1):49-51.YAO Nan,ZHENG Ting-yin,YANG Ju.Finite Element Analysis of Dissipation Characteristics of Bulking-restrained Braces[J].Jiangsu Building,2010(1):49-51.(in Chinese)
    [10]中华人民共和国国家标准.GB50011-2010,建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.PRC National Standard.GB50011-2010,Code for Seismic Design of Building[S].Beijing:China Building Industry Press,2010.(in Chinese)
    [11]中华人民共和国行业标准.JGJ3-2010,高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2010.PRC National Standard.JGJ3-2010,Technical Specification for Concrete Structures of Tall Building[S].Beijing:China Building Industry Press,2010.(in Chinese)
    [12]王亚勇,薛彦涛,欧进萍,等.北京饭店等重要建筑的消能减振抗震加固设计方法[J].建筑结构学报,2001,22(2):35-39.WANG Ya-yong,XUE Yan-tao,OU Jin-ping,et al.Structural Analyses and Design of Seismic Retrofitting with Energy Dissipation Dampers for Beijing Hotel and Other Key Buildings in Beijing[J].Journal of Building Structures,2001,22(2):35-39.(in Chinese)

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心