双向水平作用下混凝土框架节点扭转效应研究
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摘要
采用双向拟静力试验方法对不同类型的混凝土空间框架节点进行了双向循环加载的试验研究,分析不同节点在双向水平力作用下的扭转效应,并利用有限元数值分析方法,从应力角度分析节点核心区的剪切机理;比较双向水平力作用对不同类型节点扭转效应的影响程度,指出角节点的扭转效应是影响节点核心区抗剪能力的主要因素之一,提出考虑扭转效应的节点核心区抗震设计建议。
Quasi-static experiments of concrete spatial frame joints are carried out under biaxial cyclic lateral loading.The torsional phenomenon of different joint types under biaxial cyclically increasing horizontal displacement loading is analyzed,and the shear mechanism is studied from the angle of stress based on finite element analysis.In this paper,the influence comparison on torsional phenomenon of different joint types are given,the further analysis shows that the response of torsional vibration is the main influence factor on shear capacity of core joints,and the results of this study can be used to provide suggestion for the design rules of joint core considering torsion effect.
Quasi-static experiments of concrete spatial frame joints are carried out under biaxial cyclic lateral loading.The torsional phenomenon of different joint types under biaxial cyclically increasing horizontal displacement loading is analyzed,and the shear mechanism is studied from the angle of stress based on finite element analysis.In this paper,the influence comparison on torsional phenomenon of different joint types are given,the further analysis shows that the response of torsional vibration is the main influence factor on shear capacity of core joints,and the results of this study can be used to provide suggestion for the design rules of joint core considering torsion effect.
引文
[1]李宏男.结构多维抗震理论与设计方法[M].北京:科学出版社,1998.
[2]Sadjadi R,Kianoush M R,Talebi S.Seismic Performance of Reinforced Concrete Moment Resisting Frames[J].Engineer-ing Structures,2007(29):2365-2380.
[3]Adrain M Chandler,Nelson T K Lam.Performance-based Design in Earthquake Engineering:a Multidisciplinary Review[J].Engineering Structures,2001(23):1525-1543.
[4]徐培福,黄吉峰,韦承基.高层建筑结构的扭转反应控制[J].土木工程学报,2006,39(7):1-8.
[5]姚淑艳,李英民,刘立平,等.考虑双向水平地震作用的结构设计问题研究[J].地震工程与工程振动,2006,26(5):68-72.
[6]傅剑平.钢筋混凝土框架节点抗震性能与设计方法研究[D].重庆:重庆大学,2002.
[7]邱法维.结构拟动力、拟静力及远程网络化实验方法研究报告[R].北京:清华大学土木系,2005.
[8]李旭红.混凝土和预应力混凝土框架节点二维抗震性能与设计方法研究[D].福州:福州大学,2011.
[9]中华人民共和国国家标准.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[2]Sadjadi R,Kianoush M R,Talebi S.Seismic Performance of Reinforced Concrete Moment Resisting Frames[J].Engineer-ing Structures,2007(29):2365-2380.
[3]Adrain M Chandler,Nelson T K Lam.Performance-based Design in Earthquake Engineering:a Multidisciplinary Review[J].Engineering Structures,2001(23):1525-1543.
[4]徐培福,黄吉峰,韦承基.高层建筑结构的扭转反应控制[J].土木工程学报,2006,39(7):1-8.
[5]姚淑艳,李英民,刘立平,等.考虑双向水平地震作用的结构设计问题研究[J].地震工程与工程振动,2006,26(5):68-72.
[6]傅剑平.钢筋混凝土框架节点抗震性能与设计方法研究[D].重庆:重庆大学,2002.
[7]邱法维.结构拟动力、拟静力及远程网络化实验方法研究报告[R].北京:清华大学土木系,2005.
[8]李旭红.混凝土和预应力混凝土框架节点二维抗震性能与设计方法研究[D].福州:福州大学,2011.
[9]中华人民共和国国家标准.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
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