填充墙对框架结构抗震性能的影响
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摘要
框架填充墙结构在汶川地震中产生了严重的震害,我国现行抗震设计对填充墙的考虑难以保证结构在地震下的抗震性能,研究一套简单有效考虑填充墙在地震中不利影响的设计方法是亟需解决的问题。本文按规范设计框架结构算例分别进行弹性、静力弹塑性和非线性动力分析,考察填充墙在弹性和非线性阶段对框架结构的刚度、内力和变形的影响,特别是在强震中的不利影响;从中寻找弹性设计与非线性反应之间的关系而提出弹性设计中考虑填充墙不利影响的方法。结果表明,均匀满布填充墙对框架结构抗震总体上是有利的;填充墙平、立面不均匀布置对框架结构抗震不利;填充墙约束效应易产生附加剪力和短柱破坏。最后根据分析结果提出设计、管理中考虑填充墙影响的方法和措施。
Infilled frames had enormous damage in Wenchuan Earthquake.It is not always safe to have the effect of the infilled walls.It is most necessary to develop the method to consider the effect of the infilled walls on the frames when making the seismic design of the frames.Based on the elastic analysis,static nonlinear analysis and dynamic nonlinear analysis of the frame structures,which are designed according to the current Chinese seismic codes,the effects on the internal force,stiffness and deformation in the frames caused by the infilled wall,especially in the strong earthquake,are achieved and then the measures to consider the adverse effect of infilled wall are taken.The conclusions are as follows: it is unfavorable to the frame when the infilled walls are not evenly distributed.It is easy to present the additional shear and the short columns damage caused by the local restraint effect of infilled wall.In the end,this paper proposes the measures to consider the infilled wall in the seismic design and management.
Infilled frames had enormous damage in Wenchuan Earthquake.It is not always safe to have the effect of the infilled walls.It is most necessary to develop the method to consider the effect of the infilled walls on the frames when making the seismic design of the frames.Based on the elastic analysis,static nonlinear analysis and dynamic nonlinear analysis of the frame structures,which are designed according to the current Chinese seismic codes,the effects on the internal force,stiffness and deformation in the frames caused by the infilled wall,especially in the strong earthquake,are achieved and then the measures to consider the adverse effect of infilled wall are taken.The conclusions are as follows: it is unfavorable to the frame when the infilled walls are not evenly distributed.It is easy to present the additional shear and the short columns damage caused by the local restraint effect of infilled wall.In the end,this paper proposes the measures to consider the infilled wall in the seismic design and management.
引文
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[3]曹万林,王光远,吴建有,等.轻质填充墙异型柱框架结构层刚度及其衰减过程的研究[J].建筑结构学报,1995,16(5):20-31.
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[11]Han J,Zhang Y,Zheng N,et al.Analysis on nonlinear seismic response of multi-story torsion-irregular structures[C]//The 14th World Confer-ence on Earthquake Engineering,Beijing,2008.
[12]关国雄,夏敬谦.钢筋混凝土框架砖填充墙结构抗震性能的研究[J].地震工程与工程振动,1996,16(1):87-99.
[2]贾连光,孙鹏,肖青.考虑填充墙对钢框架结构体系影响的静力非线性分析[J].沈阳建筑大学学报,2008,24(1):11-15.
[3]曹万林,王光远,吴建有,等.轻质填充墙异型柱框架结构层刚度及其衰减过程的研究[J].建筑结构学报,1995,16(5):20-31.
[4]童岳生,钱国芳.填充墙框架的工作性能及设计计算[J].西安冶金建筑学院学报,1983,35(3):14-29.
[5]ATC.Seismic evaluation and retrofit of concrete buildings[S].ATC40.Redwood city,Applied Technology Council,1996.
[6]鲍雷T,普里斯特利MJ N.钢筋混凝土和砌体结构的抗震设计[M].北京:中国建筑工业出版社,2002.
[7]中华人民共和国原城乡建设环境保护部.GBJ11-89建筑抗震设计规范[S].北京:中国建筑工业出版社,1999.
[8]北京金土木软件技术有限公司,中国建筑标准设计院.SAP2000中文版使用指南[M].北京:人民交通出版社,2006.
[9]李英民,韩军,刘立平.ANSYS在砌体结构非线性有限元分析中的应用研究[J].重庆建筑大学学报,2006,28(5):90-96.
[10]Mazzoni S,McKenna F,Scott MH,et al.Opensees users manual[R].PEER,University of California at Berkeley,2006.
[11]Han J,Zhang Y,Zheng N,et al.Analysis on nonlinear seismic response of multi-story torsion-irregular structures[C]//The 14th World Confer-ence on Earthquake Engineering,Beijing,2008.
[12]关国雄,夏敬谦.钢筋混凝土框架砖填充墙结构抗震性能的研究[J].地震工程与工程振动,1996,16(1):87-99.
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