带SRC异形十字边框柱剪力墙抗震性能分析
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摘要
为研究带SRC异形十字边框柱剪力墙的抗震性能,本文基于开源分析程序Opensees,采用纤维梁单元对缩尺比为1:2.5的模型结构进行静力弹塑性分析和滞回性能分析,采用直接在截面层次上定义非线性剪切恢复力的方法来模拟纤维截面的剪切效应。得到构件的Pushover曲线、滞回曲线、等效粘滞阻尼系数、滞回环面积以及在不同轴压比情况下边框柱、剪力墙承担的剪力分配情况。分析结果表明,剪力墙承担大约75%的剪力,相比于RC剪力墙,带SRC异形边框柱剪力墙的延性、最大抗剪承载力、极限位移以及耗能能力均有不同程度的提高,设置SRC异形边框柱有效地提高了结构在地震作用下的抗震性能。
In order to study the seismic properties of shear wall with SRC special-shaped cross columns frame, pushover analysis and hysteretic analysis of fiber element on model structure with a scale rate of 1:2.5 is carried out by open source analysis program Opensees in this paper, shear effects of fiber section in section level is simulated through directly nonlinear shear recovery force method. Push-over curves, hysteretic curves, equivalent damping coefficient, area of hysteretic loop and columns and shear wall bearing shear under different axial compression ratio are obtained. The analysis results show that, shear wall bears 75% shear which is compared with RC shear wall, the ductility, maximum shear, ultimate displacement and energy dissipation capacity can improve in different degrees, the seismic behavior of structure can be effectively improved by setting SRC special-shaped column in the role of seismic.
In order to study the seismic properties of shear wall with SRC special-shaped cross columns frame, pushover analysis and hysteretic analysis of fiber element on model structure with a scale rate of 1:2.5 is carried out by open source analysis program Opensees in this paper, shear effects of fiber section in section level is simulated through directly nonlinear shear recovery force method. Push-over curves, hysteretic curves, equivalent damping coefficient, area of hysteretic loop and columns and shear wall bearing shear under different axial compression ratio are obtained. The analysis results show that, shear wall bears 75% shear which is compared with RC shear wall, the ductility, maximum shear, ultimate displacement and energy dissipation capacity can improve in different degrees, the seismic behavior of structure can be effectively improved by setting SRC special-shaped column in the role of seismic.
引文
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[8]解琳琳,黄羽立,林楷奇,等.基于Open SEES分层壳单元分析RC剪力墙[C].第二届全国防灾减灾工程学术会议,2013.
[2]刘祖强.型钢混凝土异形柱框架抗震性能及设计方法[D].西安:西安建筑科技大学,2012.
[3]杨亚彬,张建伟,曹万林,等.圆钢管混凝土边框剪力墙抗震性能试验研究[J].世界地震工程,2011,27(1):78-82.
[4]杨红,张睿,臧登科,等.纤维模型中非线性剪切效应的模拟方法及校核[J].四川大学学报:工程科学版,2011,43(1):8-16.
[5]Mander J B,Priestley M J N,Park R.Theoretical stressstrain model for confined concrete[J].Journal of Structural Engineering.ASCE.1988,114(8):1805-1826.
[6]Scott B D,Park R,Priestley M J N.Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates[J].Journal of the American Concrete Institute 1982,79(1):13-27.
[7]王文达,魏国强,李华伟.钢管混凝土框架-RC剪力墙混合结构滞回性能分析[J].振动与冲击,2013,32(15):41-46.
[8]解琳琳,黄羽立,林楷奇,等.基于Open SEES分层壳单元分析RC剪力墙[C].第二届全国防灾减灾工程学术会议,2013.