典型底框房屋震损机理快速分析方法研究
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摘要
四川汶川5.12地震及之后的多次余震导致绵竹市底框房屋遭受不同程度的破坏,对震损底框房屋作精细分析存在较大困难,难以用于实际。本文采用SAP2000对底框房屋进行Pushover分析,可得到较为丰富的计算结果,且计算量相对较小。SAP2000无法直接模拟抗震墙的非线性性能,本文使用Link单元建立抗震墙等效模型,通过与试验结果对比,验证了模型的合理性。在此基础上,对典型震损底框房屋进行了详细的Pushover分析,得到的破环特征及震损机理与现场调查结果吻合良好,与弹塑性时程分析所得层间剪力、楼层位移规律一致,误差较小,证明了本文建立的快速分析方法的正确性。
Many multi-story masonry buildings with bottom-frame in Mianzhu city were damaged in 5.12 Wenchuan earthquake and subsequent aftershocks,it is difficult to give fine analysis to earthquake damaged bottom-framed housings,and also difficult to design.In this paper,the bottom-framed housing is analyzed by SAP2000 using Pushover method,and abundant calculation results can be the obtained with little calculation work.The non-linear properties of shear wall can't be directly simulated by SAP2000,so the Link unit is used to establish an equivalent shear wall model.The effectiveness of the model is verified by comparing the model results with experimental results.By selecting a representative earthquake damaged bottom-framed housings,establishing an equivalent shear wall model in SAP2000,and analyzing it by the Pushover method,the mechanism of earthquake damage of the bottom-framed housing can be obtained.Comparing the Pushover analysis results with the Time-history analysis results,the rationality of the rapid analysis presented in this paper is verified.
Many multi-story masonry buildings with bottom-frame in Mianzhu city were damaged in 5.12 Wenchuan earthquake and subsequent aftershocks,it is difficult to give fine analysis to earthquake damaged bottom-framed housings,and also difficult to design.In this paper,the bottom-framed housing is analyzed by SAP2000 using Pushover method,and abundant calculation results can be the obtained with little calculation work.The non-linear properties of shear wall can't be directly simulated by SAP2000,so the Link unit is used to establish an equivalent shear wall model.The effectiveness of the model is verified by comparing the model results with experimental results.By selecting a representative earthquake damaged bottom-framed housings,establishing an equivalent shear wall model in SAP2000,and analyzing it by the Pushover method,the mechanism of earthquake damage of the bottom-framed housing can be obtained.Comparing the Pushover analysis results with the Time-history analysis results,the rationality of the rapid analysis presented in this paper is verified.
引文
[1]宋玮,董军,王琪,等.绵竹市典型震损底框房屋钢结构快速加固关键问题[J].南京工业大学学报,2009,31(1):66～70Song Wei,Dong Jun,Wang Qi,et al.Key-problems ofRapidly Strengthening of Steel Structure for EarthquakeDamaged Multi-story Masonry Buildings with Bottom-frame in Mianzhu City[J].Journal of Nanjing Universityof Technology(Natural Science Edition),2009,31(1):66～70(in Chinese)
[2]陈亦,何勇毅,蒋欢军.剪力墙结构计算模型分析[J].四川建筑科学研究,2001,27(1):1～4Chen Yi,He Yong-yi,Jiang Huan-jun.Analysis ofCalculation Models for Shear Wall Structures[J].Building Science Research of Sichuan,2001,27(1):1～4(in Chinese)
[3]Volcano A,Bertero V V,Colotti V.AnalyticalModeling of R/C Structural[A].Proc.9th WCEE[C],1988(4):41～46
[4]孙景江,江近仁.框架-剪力墙结构的非线性随机地震反应和可靠度分析[J].地震工程与工程振动,1992,12(2):59～68Sun Jing-jiang,Jiang Jin-ren.Stochastic SeismicResponse and Reliabllity Anlysis of Hystertic Frame-shear Wall Structures[J].Earthquake Engineering andEngineering Vibration,1992,12(2):59～68(inChinese)
[5]汪梦甫,周锡元.钢筋混凝土剪力墙多垂直杆非线性单元模型的改进及其应用[J].建筑结构学报,2002,23(1):38～42Wang Meng-fu,Zhou Xi-yuan.The Improved ParallelMulti-component Model for the Nonlinear SeismicResponse Analysis of RC Walls and Its Application[J].Journal of Building Structures,2002,23(1):38～42(in Chinese)
[6]郑山锁,薛建阳.底部框剪砌体房屋抗震分析与设计[M].北京:中国建材工业出版社,2002Zheng Shan-suo,Xue Jian-yang.Seismic Analysis andDesign of Masonry Buildings with Bottom-frame ShearWall[M].Beijing,China Building Material IndustryPublishing House,2002(in Chinese)
[7]刘桂秋.砌体结构基本受力性能的研究[D].长沙:湖南大学,2005Liu Gui-qiu.The Research on the Basic MechanicalBehavior of Masonry Structure[D].Changsha:HunanUniversity,2005(in Chinese)
[8]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[M].北京:人民交通出版社,2008Beijing Civil King Software Technology Co.,Ltd,ChinaInstitute of Building Standard Design&Research.UserManual of SAP2000 in Chinese Version[M].Beijing:China Communication Press,2008(in Chinese)
[9]孙伟民,郭樟根,丁帅,等.中小学建筑RC框架-砌体混合结构抗震性能[J].南京工业大学学报,2009,31(1):61～65Sun Wei-min,Guo Zhang-gen,Ding Shuai.Anti-seismicBehaviors of RC Frame and Masonry Wall MixedStructure in Primary and Middle School Buildings[J].Journal of Nanjing University of Technology(NaturalScience Edition),2009,31(1):61～65(in Chinese)
[10]李琪,顾荣蓉,杨鼎宜,等.底部框架-抗震墙砌体结构静力弹塑性分析[J].河海大学学报,2007,35(1):51～54Li Qi,Gu Rong-rong,Yang Ding-yi,et al.PushoverAnalysis of Masonry Structure with Frame-shear Wall atthe Bottom[J].Journal of Hohai University(NaturalSciences),2007,35(1):51～54(in Chinese)
[11]刘清山,梁兴文,黄雅捷.对结构静力弹塑性分析方法的几点改进[J].建筑科学,2005,21(4):28～33Liu Qing-sha,Liang Xing-we,Huang Ya-jie.SomeImprovement on Pushover Analysis Procedure[J].Building Science,2005,21(4):28～33(in Chinese)
[12]宋玮.绵竹市典型震损底框房屋钢结构快速加固研究[D].南京:南京工业大学,2009Song Wei.Rapid Strengthing Using Steel Structures forTypical Earthquake Damaged Mutlti-Story MarsonryBuildings with Bottom-Frame in Mianzhu City[D].Nanjing:Nanjing University of Technology,2009(inChinese)
[2]陈亦,何勇毅,蒋欢军.剪力墙结构计算模型分析[J].四川建筑科学研究,2001,27(1):1～4Chen Yi,He Yong-yi,Jiang Huan-jun.Analysis ofCalculation Models for Shear Wall Structures[J].Building Science Research of Sichuan,2001,27(1):1～4(in Chinese)
[3]Volcano A,Bertero V V,Colotti V.AnalyticalModeling of R/C Structural[A].Proc.9th WCEE[C],1988(4):41～46
[4]孙景江,江近仁.框架-剪力墙结构的非线性随机地震反应和可靠度分析[J].地震工程与工程振动,1992,12(2):59～68Sun Jing-jiang,Jiang Jin-ren.Stochastic SeismicResponse and Reliabllity Anlysis of Hystertic Frame-shear Wall Structures[J].Earthquake Engineering andEngineering Vibration,1992,12(2):59～68(inChinese)
[5]汪梦甫,周锡元.钢筋混凝土剪力墙多垂直杆非线性单元模型的改进及其应用[J].建筑结构学报,2002,23(1):38～42Wang Meng-fu,Zhou Xi-yuan.The Improved ParallelMulti-component Model for the Nonlinear SeismicResponse Analysis of RC Walls and Its Application[J].Journal of Building Structures,2002,23(1):38～42(in Chinese)
[6]郑山锁,薛建阳.底部框剪砌体房屋抗震分析与设计[M].北京:中国建材工业出版社,2002Zheng Shan-suo,Xue Jian-yang.Seismic Analysis andDesign of Masonry Buildings with Bottom-frame ShearWall[M].Beijing,China Building Material IndustryPublishing House,2002(in Chinese)
[7]刘桂秋.砌体结构基本受力性能的研究[D].长沙:湖南大学,2005Liu Gui-qiu.The Research on the Basic MechanicalBehavior of Masonry Structure[D].Changsha:HunanUniversity,2005(in Chinese)
[8]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[M].北京:人民交通出版社,2008Beijing Civil King Software Technology Co.,Ltd,ChinaInstitute of Building Standard Design&Research.UserManual of SAP2000 in Chinese Version[M].Beijing:China Communication Press,2008(in Chinese)
[9]孙伟民,郭樟根,丁帅,等.中小学建筑RC框架-砌体混合结构抗震性能[J].南京工业大学学报,2009,31(1):61～65Sun Wei-min,Guo Zhang-gen,Ding Shuai.Anti-seismicBehaviors of RC Frame and Masonry Wall MixedStructure in Primary and Middle School Buildings[J].Journal of Nanjing University of Technology(NaturalScience Edition),2009,31(1):61～65(in Chinese)
[10]李琪,顾荣蓉,杨鼎宜,等.底部框架-抗震墙砌体结构静力弹塑性分析[J].河海大学学报,2007,35(1):51～54Li Qi,Gu Rong-rong,Yang Ding-yi,et al.PushoverAnalysis of Masonry Structure with Frame-shear Wall atthe Bottom[J].Journal of Hohai University(NaturalSciences),2007,35(1):51～54(in Chinese)
[11]刘清山,梁兴文,黄雅捷.对结构静力弹塑性分析方法的几点改进[J].建筑科学,2005,21(4):28～33Liu Qing-sha,Liang Xing-we,Huang Ya-jie.SomeImprovement on Pushover Analysis Procedure[J].Building Science,2005,21(4):28～33(in Chinese)
[12]宋玮.绵竹市典型震损底框房屋钢结构快速加固研究[D].南京:南京工业大学,2009Song Wei.Rapid Strengthing Using Steel Structures forTypical Earthquake Damaged Mutlti-Story MarsonryBuildings with Bottom-Frame in Mianzhu City[D].Nanjing:Nanjing University of Technology,2009(inChinese)
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