轻钢加层结构弹塑性时程分析
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摘要
轻钢加层结构已经在加固改造工程中日益不断地增加,由于这种结构是两种不同材料的结构形式(混凝土结构和钢结构)复合而成的,存在刚度和承载力的突变,产生鞭梢效应等不利影响[1-3]。论文利用abaqus软件对多层混凝土结构轻钢加层进行了仿真分析,得出多层混凝土结构轻钢加层在频遇地震作用下能满足"小震不坏"的抗震设防要求。在罕遇地震作用下,轻钢加层结构的轻钢层不会发生破坏,但是原混凝土结构的薄弱层会发生屈服破坏。
The technique of adding stories with light-weight steel structure on the top of existing building is increasing constantly.However,this technique is not widely used in Chian now,for some problems of these structure,which is abrupt change in stiffness and bearing capacity that result from the structure is compose of concrete structure and steel structure.Using the abaqus software,the simulation analysis of seismic performance is made.The result show that adding stories with light-weight steel structure on the top of existing building is in elastic state under frequent earthquake,and the new storey-the adding storey on top of existing building is safe while the original structure is likely to cause plastic failure.
The technique of adding stories with light-weight steel structure on the top of existing building is increasing constantly.However,this technique is not widely used in Chian now,for some problems of these structure,which is abrupt change in stiffness and bearing capacity that result from the structure is compose of concrete structure and steel structure.Using the abaqus software,the simulation analysis of seismic performance is made.The result show that adding stories with light-weight steel structure on the top of existing building is in elastic state under frequent earthquake,and the new storey-the adding storey on top of existing building is safe while the original structure is likely to cause plastic failure.
引文
[1]王燕,徐永春.轻钢加层结构模型的地震反应试验研究[J].力学与实践,1999,21(5):31-36.
[2]陈招平.轻钢加层结构的地震反应分析[J].工程抗震与加固改造,2008,30(6):105-108.
[3]丁浩然,王清远.钢框架加层整体结构动力特性的有限元分析[J].四川建筑科学研究,2009,35(2):20-28.
[4]北京金土木软件技术有限公司,中国建筑标准设计研究院.ETABS中文版使用指南[M].北京:中国建筑工业出版社,2004.
[5]李承铭.钢-钢筋混凝土杆系结构三维地震作用下弹塑性时程分析[D].上海:同济大学土木工程学院,2007.
[6]陆新征,叶列平,廖志伟,等.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2009.
[7]GB50011—2010建筑抗震设计规范[S].
[2]陈招平.轻钢加层结构的地震反应分析[J].工程抗震与加固改造,2008,30(6):105-108.
[3]丁浩然,王清远.钢框架加层整体结构动力特性的有限元分析[J].四川建筑科学研究,2009,35(2):20-28.
[4]北京金土木软件技术有限公司,中国建筑标准设计研究院.ETABS中文版使用指南[M].北京:中国建筑工业出版社,2004.
[5]李承铭.钢-钢筋混凝土杆系结构三维地震作用下弹塑性时程分析[D].上海:同济大学土木工程学院,2007.
[6]陆新征,叶列平,廖志伟,等.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2009.
[7]GB50011—2010建筑抗震设计规范[S].
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