框架节点在不同加载方式下抗震性能试验研究
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摘要
针对混凝土框架节点的拟静力抗震性能试验研究,采用平面加载装置和空间加载装置对6个节点进行单、双向水平反复的对比试验,得到不同加载方式和加载制度下试件的滞回曲线.通过对各个试件的破坏形态、承载力、刚度、骨架曲线、延性及耗能能力的对比分析,表明二维作用下对空间节点的抗震性能影响更敏感,构件耦合作用明显,扭转效应显著.研究结果表明:试验方法对节点的抗震性能影响较大,将低维条件下节点的抗震性能研究成果推广到更高维的层次上有一定的局限性.
In order to analyze the seismic performance of concrete spatial frame joints under quasi-static test,the comparison of 6 specimens experiments are carried out under uniaxial and biaxial cyclic lateral loading on different loading devices.The relationship between force and displacement is obtained in different loading method and loading path.Through the analysis comparison of failure features,bearing capacity,stiffness,skeleton curves,ductility and dissipated energy,two-dimensional loading path is more sensitive to the seismic behavior of spatial frame joints,it can be concluded that the coupling effect is obvious under biaxial lateral load,the torsional phenomenon exists in specimens also.Test results indicate that the different experiment method has different effects on seismic behavior of spatial frame joints.So it has limitation that low-dimensional research result of seismic behavior is extended to high-dimensional application.
In order to analyze the seismic performance of concrete spatial frame joints under quasi-static test,the comparison of 6 specimens experiments are carried out under uniaxial and biaxial cyclic lateral loading on different loading devices.The relationship between force and displacement is obtained in different loading method and loading path.Through the analysis comparison of failure features,bearing capacity,stiffness,skeleton curves,ductility and dissipated energy,two-dimensional loading path is more sensitive to the seismic behavior of spatial frame joints,it can be concluded that the coupling effect is obvious under biaxial lateral load,the torsional phenomenon exists in specimens also.Test results indicate that the different experiment method has different effects on seismic behavior of spatial frame joints.So it has limitation that low-dimensional research result of seismic behavior is extended to high-dimensional application.
引文
[1]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,2005.
[2]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.
[3]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.
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[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]Sadjadi R,Kianoush M R,Talebi S.Seismic performance of reinforced concrete moment resisting frames[J].EngineeringStructures,2007,29:2 365-2 380.
[7]Chandler A M,Lam N T K.Performance-based design in earthquake engineering:a multidisciplinary review[J].EngineeringStructures,2001,23:1 525-1 543.
[8]霍林生,李宏男,肖诗云,等.汶川地震钢筋混凝土框架结构震害调查与启示[J].大连理工大学学报,2009,49(5):718-723.
[9]李宏男,刘志刚,Ardekul.地震震害调查[J].工程抗震,1998,27(3):39-43.
[2]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.
[3]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.
[4]徐有邻,邸小坛.房屋倒塌规律调查分析及结构抗灾性[J].建筑结构学报,2011,32(5):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]Sadjadi R,Kianoush M R,Talebi S.Seismic performance of reinforced concrete moment resisting frames[J].EngineeringStructures,2007,29:2 365-2 380.
[7]Chandler A M,Lam N T K.Performance-based design in earthquake engineering:a multidisciplinary review[J].EngineeringStructures,2001,23:1 525-1 543.
[8]霍林生,李宏男,肖诗云,等.汶川地震钢筋混凝土框架结构震害调查与启示[J].大连理工大学学报,2009,49(5):718-723.
[9]李宏男,刘志刚,Ardekul.地震震害调查[J].工程抗震,1998,27(3):39-43.
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