基于OpenSees的钢-混凝土组合梁钢框架抗震性能研究
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摘要
基于OpenSees有限元软件编制了钢-混凝土组合梁纤维单元函数模块,与试验对比结果表明,该单元可以很好的模拟组合梁钢框架在地震往复荷载作用下的受力性能;以试验框架为基础,通过改变混凝土翼板厚度、配筋率、型钢梁高度、混凝土强度和钢材强度等影响因素,研究其对组合梁钢框架抗震性能的影响。研究结果表明:钢梁高度对钢框架的抗震性能影响最大,混凝土板厚度和钢材强度等级影响次之,配筋率和混凝土强度等级对结构的抗震性能影响很小。
A steel-concrete composite fiber beam model is developed in this paper based on Open Sees. The model is verified through the experiment showing that the fiber beam model possesses good accuracy and can be used to perform global elasto- plastic analysis of steel- concrete composite frames subjected to the cyclic lateral loads. The parameters affecting the Seismic behavior of steel- concrete composite frames are analyzed,including the thickness of concrete slab,reinforcement ratio,steel beam height,the strength of concrete and steel strength,etc. The results show that the beam height has the greatest influence on the seismic performance of steel framework,concrete slab thickness and steel strength grade greater on the seismic performance of steel framework,reinforcement ratio,concrete strength grade have little impact on the seismic performance of structure.
A steel-concrete composite fiber beam model is developed in this paper based on Open Sees. The model is verified through the experiment showing that the fiber beam model possesses good accuracy and can be used to perform global elasto- plastic analysis of steel- concrete composite frames subjected to the cyclic lateral loads. The parameters affecting the Seismic behavior of steel- concrete composite frames are analyzed,including the thickness of concrete slab,reinforcement ratio,steel beam height,the strength of concrete and steel strength,etc. The results show that the beam height has the greatest influence on the seismic performance of steel framework,concrete slab thickness and steel strength grade greater on the seismic performance of steel framework,reinforcement ratio,concrete strength grade have little impact on the seismic performance of structure.
引文
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[6]张俊峰,李天,董林林.基于Open Sees的钢-混凝土组合梁非线性有限元分析[J],世界地震工程,2013,29(2):102-107.Zhang Junfeng,Li Tian,Dong Linlin.Nonlinear finite element analysis on steel-concrete composite beam in Open Sees platform[J],World Earthquake Engineering,2013,29(2):102-107.(in Chinese)
[7]黄宗明,陈滔.基于有限单元柔度法和刚度法的非线性梁柱单元比较研究[J].工程力学,2003,20(05):24-31.Huang Zongming,Chen Tao.Comparison between flexibility-based and stiffness-based nonlinear beam-column elements[J].Engineering Mechanics,2003,20(05):24-31.(in Chinese)
[8]叶飞.基于OPENSEES的RC框架结构地震倒塌性能分析[D].长沙:湖南大学,2011.Ye Fei.Anti-seismic and Anti-collapse Performance Analysis of RC Frame Structure Based on Open SEES[D].Chang Sha:Human University,2011.(in Chinese)
[9]宁超列,段忠东.Open Sees中三种非线性梁柱单元的研究[J].低温建筑技术,2009,129(03):49-53.Ning Chaolie,Duan Zhongdong.Research of three nonlinear beam-column element of opensees[J].Low Temperature Architecture Technology,2009,129(03):49-53.(in Chinese)
[10]Udagawa K,Mimura H.Behavior of composite beam frame by pseudodynamic testing[J].Journal of Structural Engineering,ASCE,1991,117(5):1317-1335.
[2]陆新征,缪志伟,江见鲸,叶列平.静力和动力荷载作用下混凝土高层结构的倒塌模拟[J].山西地震,2006,126(2):7-11.Lu Xinzheng,Miao Zhiwei,Jiang Jianjing,Ye Lieping.Collapse simulation of high-rise structure of concrete under the action of static and dynamic load[J].Earthquake Research in Shanxi,2006,126(2):7-11.(in Chinese)
[3]周新炜,李志山,李云贵.基于ABAQUS纤维梁元的混凝土单轴滞回本构模型的开发与应用[C].第十四届全国工程设计计算机应用学术会议论文集,2008.Zhou Xinwei,Li Zhishan,Li Yungui.Development and application of the uniaxial hysteretic material model based on fiber beam element in ABAQUS[C].The 14th Engineering Design and Computer Application Conference,2008.(in Chinese)
[4]郑三锁,王唯,李龙,等.基于纤维模型的型钢混凝土柱精细化建模分析[J].广西大学学报(自然科学版),2012,37(2):197-203.Zheng Shansuo,Wang Wei,Li Long,et al.Accurate modeling of SRC columns based on Open SEES[J].Journal of Guangxi University:Nat Sci Ed,2012,37(2):197-203.(in Chinese)
[5]聂建国,陶慕轩.采用纤维梁单元分析钢-混凝土组合结构地震反应的应用[J].建筑结构学报,2011,32(10):11-20.Nie Jianguo,Tao Muxuan.Theory of seismic response analysis of steel-concrete composite structures using fiber beam elements[J].Journal of Building Structures,2011,32(10):11-20.(in Chinese)
[6]张俊峰,李天,董林林.基于Open Sees的钢-混凝土组合梁非线性有限元分析[J],世界地震工程,2013,29(2):102-107.Zhang Junfeng,Li Tian,Dong Linlin.Nonlinear finite element analysis on steel-concrete composite beam in Open Sees platform[J],World Earthquake Engineering,2013,29(2):102-107.(in Chinese)
[7]黄宗明,陈滔.基于有限单元柔度法和刚度法的非线性梁柱单元比较研究[J].工程力学,2003,20(05):24-31.Huang Zongming,Chen Tao.Comparison between flexibility-based and stiffness-based nonlinear beam-column elements[J].Engineering Mechanics,2003,20(05):24-31.(in Chinese)
[8]叶飞.基于OPENSEES的RC框架结构地震倒塌性能分析[D].长沙:湖南大学,2011.Ye Fei.Anti-seismic and Anti-collapse Performance Analysis of RC Frame Structure Based on Open SEES[D].Chang Sha:Human University,2011.(in Chinese)
[9]宁超列,段忠东.Open Sees中三种非线性梁柱单元的研究[J].低温建筑技术,2009,129(03):49-53.Ning Chaolie,Duan Zhongdong.Research of three nonlinear beam-column element of opensees[J].Low Temperature Architecture Technology,2009,129(03):49-53.(in Chinese)
[10]Udagawa K,Mimura H.Behavior of composite beam frame by pseudodynamic testing[J].Journal of Structural Engineering,ASCE,1991,117(5):1317-1335.
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