模型化方法对钢筋混凝土框架地震反应的影响分析
|
摘要
结构非线性动力分析平台OpenSees具备丰富的材料、单元、模型化方法等分析选项和强大的求解功能。在OpenSees平台,对按我国规范设计的八度区二级和九度区一级典型钢筋混凝土框架结构进行了一系列罕遇烈度地震作用下的非线性动力反应分析。通过对分析结果的对比、判断,并结合各种模型化方法对结构地震反应的影响方式进行解释,从顶点侧移、层间侧移角、基底剪力、框架塑性铰分布等方面揭示了不同单元力学模型以及箍筋、板筋对结构整体、局部地震反应的影响规律。
OpenSees is a software framework for the nonlinear dynamic response analysis of structures.It is abundant in materials,elements and model methods,as well as powerful solution functions.A series of nonlinear dynamic response analyses of typical frames under rare earthquakes were performed on the basis of the OpenSees framework.These two frames were designed according to the provisions of the second aseismic level for the regions of seismic intensity VIII and the first aseismic level for the regions of seismic intensity IX prescribed by Chinese building codes,respectively.Based on the comparison and judgement of analysis results,and the explanation of how model methods affect the structural seismic responses,the influence of different element mechanical models,hoops and slab reinforcements on the global and local seismic responses of structures were interpreted through roof displacement,interstory drift ratio,base shear and distribution of plastic hinges.
OpenSees is a software framework for the nonlinear dynamic response analysis of structures.It is abundant in materials,elements and model methods,as well as powerful solution functions.A series of nonlinear dynamic response analyses of typical frames under rare earthquakes were performed on the basis of the OpenSees framework.These two frames were designed according to the provisions of the second aseismic level for the regions of seismic intensity VIII and the first aseismic level for the regions of seismic intensity IX prescribed by Chinese building codes,respectively.Based on the comparison and judgement of analysis results,and the explanation of how model methods affect the structural seismic responses,the influence of different element mechanical models,hoops and slab reinforcements on the global and local seismic responses of structures were interpreted through roof displacement,interstory drift ratio,base shear and distribution of plastic hinges.
引文
[1]Allahabadi R,Powell G H,et al.DRAIN-2DX user guide EERC Report[R].Berkeley:University of California,1988.
[2]Valles R,Reinhorn A,Kunnath S,et al.IDARC2D Version4.0:Acomputer programfor the inelastic damage analysis of buildings,Tech.Rep.NCEER-96-0010[R].New York at Buffalo:National Center for Earthqauke Engineering Research,1996.
[3]Spacone E,Filippou F C,Taucer F F.Fiber beam-column model for nonl-linear analysis of R/C frames:part I.formulation[J].EarthquakeEngineering and Structural Dynamics,1996,25(7):711-725.
[4]Mazzoni S,McKenna F,Michael Het al.OpenSees users manual[R].Berkeley:PEER Center,University of California at Berkeley,2006.
[5]刘光明,杨红,邹胜斌,等.基于新规范的钢筋混凝土框架抗震性能评价[J].重庆建筑大学学报,2004,26(1):40-49.
[6]Scott B D,Park R,Priestley MJ N.Stress-strain behavior of concrete confined by overlapping hoops at lowand high strain rates[J].ACI Struc-tural Journal,1982,79:13-27.
[7]蒋永生,陈忠范,周绪平,等.整浇梁板的框架节点抗震研究[J].建筑结构学报,1994,15(6):11-16.
[8]吴勇,雷汲川,杨红,等.板筋参与梁端负弯矩承载力问题的探讨[J].重庆建筑大学学报,2002,24(3):33-37.
[9]杨红,白绍良.考虑节点内梁纵筋粘结滑移的结构弹塑性地震反应[J].土木工程学报,2004,37(5):16-22.
[10]杨红,白绍良.基于变轴力和定轴力试验对比的钢筋混凝土柱恢复力滞回特性研究[J].工程力学,2003,20(6):58-64.
[2]Valles R,Reinhorn A,Kunnath S,et al.IDARC2D Version4.0:Acomputer programfor the inelastic damage analysis of buildings,Tech.Rep.NCEER-96-0010[R].New York at Buffalo:National Center for Earthqauke Engineering Research,1996.
[3]Spacone E,Filippou F C,Taucer F F.Fiber beam-column model for nonl-linear analysis of R/C frames:part I.formulation[J].EarthquakeEngineering and Structural Dynamics,1996,25(7):711-725.
[4]Mazzoni S,McKenna F,Michael Het al.OpenSees users manual[R].Berkeley:PEER Center,University of California at Berkeley,2006.
[5]刘光明,杨红,邹胜斌,等.基于新规范的钢筋混凝土框架抗震性能评价[J].重庆建筑大学学报,2004,26(1):40-49.
[6]Scott B D,Park R,Priestley MJ N.Stress-strain behavior of concrete confined by overlapping hoops at lowand high strain rates[J].ACI Struc-tural Journal,1982,79:13-27.
[7]蒋永生,陈忠范,周绪平,等.整浇梁板的框架节点抗震研究[J].建筑结构学报,1994,15(6):11-16.
[8]吴勇,雷汲川,杨红,等.板筋参与梁端负弯矩承载力问题的探讨[J].重庆建筑大学学报,2002,24(3):33-37.
[9]杨红,白绍良.考虑节点内梁纵筋粘结滑移的结构弹塑性地震反应[J].土木工程学报,2004,37(5):16-22.
[10]杨红,白绍良.基于变轴力和定轴力试验对比的钢筋混凝土柱恢复力滞回特性研究[J].工程力学,2003,20(6):58-64.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心