L型不规则框剪结构的扭转效应的研究
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摘要
现代社会发展高层建筑需要考虑建筑功能及立面的要求而出现各种的非规则结构形式,其中扭转不规则问题较为突出和常见。此类建筑的延性较差,地震时结构扭转破坏极其严重。"高规"通过扭转周期比和扭转位移比双重控制指标对结构扭转效应进行控制。实际过程中也因为抗侧力构件布置不规则,导致刚度中心和质量中心不重合,由此产生偏心距,而在地震作用下导致扭转效应,本文通过几个具体模型来比较分析不规则而导致的扭转。
In modern society,to meet function and facade requirements of the buildings,various forms of irregular structure emerge with the rapid development of high-rise buildings.Hereinto,the problem of irregular torsion is especially outstanding and common.The ductility of these buildings is poor,so torsional failure of structure is extremely serious while earthquake happens."Fire Protection Design of Tall Buildings" controls the structural torsional effect with torsional period ratio and torsional displacement ratio these two indexes.In actual process,because the layout of lateral force-resisting members is irregular,the center of stiffness do not coincide with the center of mass,then costs eccentricity,lead to torsional effect under the earthquake finally.This paper compared torsion caused by irregular through several concrete models.
In modern society,to meet function and facade requirements of the buildings,various forms of irregular structure emerge with the rapid development of high-rise buildings.Hereinto,the problem of irregular torsion is especially outstanding and common.The ductility of these buildings is poor,so torsional failure of structure is extremely serious while earthquake happens."Fire Protection Design of Tall Buildings" controls the structural torsional effect with torsional period ratio and torsional displacement ratio these two indexes.In actual process,because the layout of lateral force-resisting members is irregular,the center of stiffness do not coincide with the center of mass,then costs eccentricity,lead to torsional effect under the earthquake finally.This paper compared torsion caused by irregular through several concrete models.
引文
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10 Midas Building从入门到精通结构大师[M].北京:中国建筑工业出版社,2010.
2高层建筑混凝土结构技术规程(JGJ-2002)[S].北京:中国建筑工业出版社,2002.
3魏琏.水平地震作用下不对称建筑的抗震计算[J]建筑科学,1990,3(3):53-57.
4魏琏,王森,韦承基.水平地震作用下不对称不规则结构的抗扭设计方法研究[J].建筑结构,2006(3):96-99.
5黄慎江,方高倪,吴运传.高层建筑层间位移控制的探讨[J].安徽建筑工业学院学报,2003,11(2):20-23.
6马龙,干洪.关于框剪结构动力分析的一个新方法[J].安徽建筑工业学院学报,2001,9(4):25-31.
7方鄂华,程懋堃.关于规程中对扭转不规则控制方法的探讨[J].建筑结构,2005,35(11):12-15.
8杨鉴,魏琏.高层建筑扭转耦联自由振动的计算[J].建筑结构学报,1985(6):31-40.
9周云.高层建筑结构设计[M].武汉:武汉理工大学出版社,2004.
10 Midas Building从入门到精通结构大师[M].北京:中国建筑工业出版社,2010.
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