竖向变刚度约束砌体结构抗震能力研究
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摘要
汶川8.0级特大地震发生时,前山断裂从彭州市白鹿中学两栋教学楼中间穿过,断层距离两栋教学楼仅数米,造成前楼严重破坏,破坏现象非常典型。该结构为外廊式单跨约束砌体结构教学楼,抗震设防烈度为7度,承重墙体的构造特点有别于当地的普通砌体结构,本文采用现场测试、震害考察和弹塑性地震反应计算分析等手段对该结构的抗震性能进行了详细的研究,旨在揭示具有这类构造形式的砌体结构在不同烈度影响场下的破坏特点和抗震能力,为指导今后砌体结构的设计和抗震规范的修改提供参考。
When Wenchuan Ms 8.0 earthquake occurred,the range-front fault of the Longmen Mountain passed through the two teaching buildings of Bailu Middle School in Pengzhou city.The fault is only a few meters from the two teaching buildings.The front building is damaged seriously,and the damage phenomenon is very typical.The front building is a confined masonry structure with single span and cantilevered exterior corridor,and its earthquake fortification intensity is Ⅶ.The construction features of bearing walls are different from those of the local ordinary masonry structures.In this paper,detailed research,depending on the field test,earthquake disaster investigation and calculation analysis of elastic-plastic seismic response,has been conducted.The research is to reveal the damage features and seismic capacity of such kind of construction form in influence fields with different intensity and to provide references for the design of masonry structures and modification of the seismic code in the future.
When Wenchuan Ms 8.0 earthquake occurred,the range-front fault of the Longmen Mountain passed through the two teaching buildings of Bailu Middle School in Pengzhou city.The fault is only a few meters from the two teaching buildings.The front building is damaged seriously,and the damage phenomenon is very typical.The front building is a confined masonry structure with single span and cantilevered exterior corridor,and its earthquake fortification intensity is Ⅶ.The construction features of bearing walls are different from those of the local ordinary masonry structures.In this paper,detailed research,depending on the field test,earthquake disaster investigation and calculation analysis of elastic-plastic seismic response,has been conducted.The research is to reveal the damage features and seismic capacity of such kind of construction form in influence fields with different intensity and to provide references for the design of masonry structures and modification of the seismic code in the future.
引文
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[2]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):90-96,105.LI Yingmin,HAN Jun,LIU Liping.Application of ANSYS to finite element analysis for nonlinear masonry structures[J].Journal of ChongqingJianzhu University,2006,28(5),90-96,105.(in Chinese)
[3]冯学刚.砌体结构地震破坏模式研究[D].哈尔滨:中国地震局工程力学研究所,2010.FENG Xuegang.Study on seismic damage modes of masonry building structures[D].Harbin:Institute of Engineering Mechanics,China Earth-quake Administration,2010.(in Chinese)
[4]姚新强.规则平面西藏单层砌体打包带加固抗震试验与有限元模拟分析[D].哈尔滨:中国地震局工程力学研究所,2011.YAO Xinqiang.Polypropylene band strengthening seismic test on Tibet single masonry of regular plane and finite element simulation analysis[D].Harbin:Institute of Engineering Mechanics,China Earthquake Administration,2011.(in Chinese)
[5]陈珊.西藏抗震设防单层民居试验研究与有限元分析[D].哈尔滨:中国地震局工程力学研究所硕士论文.2011.CHEN Shan.Test research and finite element analysis of seismic design of single-storey dwellings in Tibet[D].Harbin:Institute of EngineeringMechanics,China Earthquake Administration,2011.(in Chinese)
[6]陆新征、叶列平、缪志伟,等.建筑抗震弹塑性分析—原理、模型与在ABAQUS,MSC,MARC和SAP2000上的实践[M].北京:中国建筑工业出版社,2009.LU Xinzheng,YE Lieping,MIAO Zhiwei.Principle,model and practice on ABAQUS,MSC,MARC,SAP2000 of building aseismic elasto-plastic a-nalysis[M].Beijing:China Building Industry Press,2009.(in Chinese)
[7]唐岱新主编.砌体结构[M].北京:高等教育出版社,2003.TANG Daixin.Masonry structure[M].Beijing:Higher Education Press,2003.(in Chinese)
[8]GB 50010-2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.GB 50010-2002 Concrete Structure Design Code[S].Beijing:China Building Industry Press,2002.(in Chinese)
[9]尹之潜,杨淑文.地震损失分析与设防标准[M].北京:地震出版社,2004.YIN Zhiqian,YANG Shuwen.Earthquake loss analysis and fortification standard[M].Beijing:Seismological Press,2004.(in Chinese)
[10]SUN Baitao,ZHOU Qiang,YANG Yucheng,et al.Study on shaking table test of a L-form and expanded single story masonry building in Damxung[C].CECNet2011,2011:3608-3611.
[11]JGJ3-2002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,2002.JGJ3-2002Technical specification for concrete structures of tall building[S].Beijing:China Building Industry Press,2002.(in Chinese)
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