高层建筑的扭转破坏机理与抗扭措施
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摘要
国内外历次震害表明,建筑物因扭转破坏占地震破坏的比例非常大,随着高层建筑结构平面,立面的多样化和复杂化,不规则结构的扭转破坏问题日益凸显。为了减轻地震时的扭转破坏,本文运用satwe软件,分别采用四种方案对周边构件进行刚度调整,得出加大离刚心最远处构件的刚度,最能有效地减轻扭转效应,并根据扭转机理提出了一系列的抗扭措施为工程设计提供依据。
The damage of earthquakes at home and abroad shows that the buildings twisted and damaged by earthquake occupy prodigious the proportion of earthquake damage.As the diversification and complication of plane and elevation in multistory building structures,the problem of twist damage on irregular structure is growing.In order to reduce the twist damage of earthquake,four schemes are adopted respectively to adjust stiffness of surrounding structure with SATWE software.A conclusion is made that to enhance the stiffness of the structure which is the farthest from the center of stiffness could effectively reduce the torsion effect.The paper proposes a series of anti-torque measures according to the torsion mechanism,which provides basis for engineering design.
The damage of earthquakes at home and abroad shows that the buildings twisted and damaged by earthquake occupy prodigious the proportion of earthquake damage.As the diversification and complication of plane and elevation in multistory building structures,the problem of twist damage on irregular structure is growing.In order to reduce the twist damage of earthquake,four schemes are adopted respectively to adjust stiffness of surrounding structure with SATWE software.A conclusion is made that to enhance the stiffness of the structure which is the farthest from the center of stiffness could effectively reduce the torsion effect.The paper proposes a series of anti-torque measures according to the torsion mechanism,which provides basis for engineering design.
引文
[1]徐培福,傅学怡.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005:14-15.
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[3]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,2005,16(8):35-36.
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[5]JGJ3-2010.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,2010:35-36.
[6]徐培福,黄吉锋,韦承基.高层建筑结构扭转反应控制[C]//第十九届全国高层建筑结构学术会议论文.吉林长春:中国建筑学会建筑结构分会,2006:18-19.
[7]蔡健,潘东辉,黄炎生.高层建筑结构扭转振动效应控制研究[J].工程力学,2007,23(7):118-119.
[8]刘畅.地震作用下偏心结构扭转反应研究[D].长沙:湖南大学,2006.
[2]徐培福,黄吉锋,韦承基.高层建筑结构在地震作用下的扭转振动效应[J].土木工程学报,2006,14(7):4-5.
[3]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,2005,16(8):35-36.
[4]林同炎,思多台斯伯利S D.结构概念和体系[M].北京:中国建筑工业出版社,1985:27-28.
[5]JGJ3-2010.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,2010:35-36.
[6]徐培福,黄吉锋,韦承基.高层建筑结构扭转反应控制[C]//第十九届全国高层建筑结构学术会议论文.吉林长春:中国建筑学会建筑结构分会,2006:18-19.
[7]蔡健,潘东辉,黄炎生.高层建筑结构扭转振动效应控制研究[J].工程力学,2007,23(7):118-119.
[8]刘畅.地震作用下偏心结构扭转反应研究[D].长沙:湖南大学,2006.
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