底层商用多层砌体结构抗震性能与倒塌机理试验研究
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摘要
为探究底商多层砌体结构房屋地震作用下的破坏模式及倒塌机理,确保底商多层砌体结构遭遇地震时避免发生倒塌,针对两栋按1:5缩尺比例建造的两层砌体结构模型进行振动台对比试验,再现结构的破坏过程。试验结果表明,纵向墙体(横墙)刚度差异引起地震作用力分配不均,导致墙体被逐个击破,造成结构破坏甚至发生倒塌;确保结构在地震过程中具有足够的承载能力可以有效避免结构发生倒塌;试验结果揭示了汶川地震中北川电信职工住宅楼这一结构类型的建筑在极震区未发生倒塌原因,为底商多层砌体结构抗震设计及既有砌体结构建筑的抗震加固提供依据。
To explore the seismic performance and the collapse mechanism of the multi-story masonry structure with first soft floor,two 1 /5 scale two-layers masonry models shaking table test were carried out,and the collapse process was reproduced. The shaking table test verified that the dominant factor leading to collapse was the significant difference among the lateral stiffness of longitudinal( or transversal) walls. The seismic shear forces were quits different,which led the components to be failed and even collapsed in succession. Ensuring that the structure has enough carrying capacity could prevent its collapse effectively. The shaking table test announced that why the apartment of Beichuan telecom-company did not collapse in the Wenchuan earthquake. Meanwhile the test provided a basis for the seismic fortification and seismic design of multi-story masonry structure with first soft floor.
引文
[1]郭迅.汶川大地震震害特点与成因分析[J].地震工程与工程振动,2009,29(6):74-87.GUO Xun.Characteristics and mechanism analysis of the great Wenchuan earthquake[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(6):74-87(in Chinese)
    [2]李英民,韩军,刘立平,等.“5·12”汶川地震砌体结构房屋震害调查与分析[J].西安建筑科技大学学报:自然科学版,2009,41(5):606-611.LI Yingmin,HAN Jun,LIU Liping,et al.Investigation and analysis of masonry building damage caused by the 5·12 Wenchuan earthquake,Sichuan Province[J].Xi’an Univ.of Arch.&Tech.(natural science edition),2009,41(5):606-611.(in Chinese)
    [3]李宏男,肖诗云,霍林生.汶川地震震害调查与启示[J].建筑结构学报,2008,29(4):10-19.LI Hongnan,XIAO Shiyun,HUO linsheng.Damage investigation and analysis of engineering structures in the Wenchuan earthquake[J].Journal of Building Structure,2008,29(4):10-19.(in Chinese)
    [4]李小军,于爱勤,甘朋霞,等.汶川8.0级地震北川县城区灾害调查与分析[J].震灾防御技术,2008,3(4):352-362.LI Xianjun,YU Aiqin,GAN Pengxia,et al.survey and analysis of the disaster and engineering damage of Beichuan county seat in Ms8.0 Wenchuan earthquake[J].Technology for Earthquake Disaster Prevention,2008,3(4):352-362.(in Chinese)
    [5]李碧雄,谢和平,王哲,等.汶川地震后多层砌体结构震害调查及分析[J].四川大学学报:工程科学版,2009,41(4):19-25.LI Bixiong,XIE Heping,WANG Zhe,et al.Wenchuan earthquake reconnaissance and analysis on multi-masonry structure buildings[J].Journal of Sichuan University(Engineering Science Edition),2009,41(4):19-25.(in Chinese)
    [6]GB/T 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2008.GB/T 50011-2001 Code for Seismic Design of Buildings[S].Beijing:China Architecture and Building Press,2008.(in Chinese)
    [7]张敏政.地震模拟试验中相似率应用的若干问题[J].地震工程与工程振动,1997,17(2):52-58.ZHANG Minzheng.Study on similitude laws for shaking table tests[J].Journal of Earthquake Engineering and Engineering Vibration,1997,17(2):52-58.(in Chinese)
    [8]Helmut Krawinkler.Dynamic modeling of concrete structure[M].Harris Editor ACI Publication,1982.

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