洞庭湖区空斗墙建筑抗震性能实测及数值模拟
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摘要
通过现场实测及数值模拟对洞庭湖区典型空斗墙建筑的抗震性能进行了研究。研究结果表明:数值模型能很好地反映实际结构的动力特性。时程分析结果表明,在保证材料强度的情况下,洞庭湖区典型空斗墙建筑可满足我国抗震规范7度(0.10g)多遇地震的设防要求,其中柔性楼屋盖空斗墙建筑更是可基本达到7度(0.15g)多遇地震设防要求;柔性楼屋盖空斗墙建筑的抗震抗剪承载力比半刚性楼屋盖空斗墙建筑的要高23.1%;眠砌构造柱可提高半刚性楼屋盖空斗墙建筑抗震抗剪承载力5%。
In this paper,the seismic performance of typical rowlock wall building in Dongting Lake area was studied by field test and numerical simulations.The results show that the dynamic characteristics of numerical model are well agreeable with those of the actual structure,so the results of numerical simulations can reflect really the seismic performance of actual structure.The seismic performance of typical rowlock wall building in Dongting Lake area can satisfy with the demand of seismic fortification intensity Ⅶ(0.10g) for frequent earthquake,furthermore the seismic performance of typical rowlock wall building with flexible floors and roof can basically meet requirement for seismic fortification intensity Ⅶ(0.15g)for frequent earthquake.The seismic shear of the typical rowlock wall building with flexible floors and roof is 23.1% bigger than that of building with semi-rigid floors and roof.Considering the brick constructional columns,the seismic shear of the typical rowlock wall building with semi-rigid floors and roof can be improved to 105%.
In this paper,the seismic performance of typical rowlock wall building in Dongting Lake area was studied by field test and numerical simulations.The results show that the dynamic characteristics of numerical model are well agreeable with those of the actual structure,so the results of numerical simulations can reflect really the seismic performance of actual structure.The seismic performance of typical rowlock wall building in Dongting Lake area can satisfy with the demand of seismic fortification intensity Ⅶ(0.10g) for frequent earthquake,furthermore the seismic performance of typical rowlock wall building with flexible floors and roof can basically meet requirement for seismic fortification intensity Ⅶ(0.15g)for frequent earthquake.The seismic shear of the typical rowlock wall building with flexible floors and roof is 23.1% bigger than that of building with semi-rigid floors and roof.Considering the brick constructional columns,the seismic shear of the typical rowlock wall building with semi-rigid floors and roof can be improved to 105%.
引文
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[2]葛学礼,朱立新,赵小飞等.浙江文成地震村镇空斗墙建筑震害分析[J].工程抗震与加固改造,2006,28(6):106～109.
[3]翁小平,王柏生.基于ANSYS的空斗墙片墙抗侧力性能研究[J].结构工程师,2010,26(1):56～61.
[4]魏文晖,熊利剑,吴亚丽.空斗墙砌体结构检测与非线性有限元动力分析[J].华中科技大学学报(城市科学版),2009,26(4):20～24.
[5]李校兵,汤伟民,张清华等.空斗墙片墙抗侧力性能试验研究[J].自然灾害学报,2010,19(1):8～12.
[6]奉杰超,尚守平,刘沩等.空斗墙墙片的拟静力试验研究[J].铁道科学与工程学报,2009,6(3):31～35.
[7]葛学礼,朱立新,于文等.温州大仑砖空斗墙房屋模型振动台试验研究[J].工程抗震与加固改造,2010,32(6):104～110.
[8]李国强,李杰.工程结构动力检测理论与应用[M].北京:科学出版社,2002
[9]王海东,陈忻,黄曙.湖南省农村民居现状及特大冰冻雨雪灾害调查研究[J].自然灾害学报,2010,19(4):109～113.
[10]温瑞智,胡进军,周正华.基于环境振动测试的高层钢筋混凝土结构模态参数识别[J].地震研究,2008,31(3):268～273.
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