密肋复合墙框格单元的损伤和耗能分析
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摘要
目的分析密肋复合墙框格单元的损伤过程和耗能分担率,为研究密肋复合墙对框架结构抗地震倒塌能力的影响提供依据.方法基于能量理论,构造局部损伤指标及整体损伤指标,计算框格单元各构件在破坏过程中的耗能分担率.结果计算出外荷载下框格单元中的砌块构件的耗能分担率从62%降到18%,框格构件的耗能分担率从38%降到82%,得出了密肋复合墙框格单元从完好到破坏的整个过程中耗能转化规律.结论基于能量理论的耗能分担率能够较好地反映各构件的耗能转化规律,可进一步应用于分析地震作用下密肋复合墙体的耗能减震机理及框架填充密肋复合墙结构的抗倒塌能力.
The damage process and energy-dissipation contribution rate of the fundamental element in multi-ribbed composite wall are studied for the purpose of providing a reference for the effect on seismic collapse resistance capacity of frame structure infilled with multi-ribbed composite wall.Based on energy theory,the local damage index and general damage index are proposed.And then the energy-dissipation contribution rate of the components in fundamental element is calculated,where that of the blocks decreases from 62% to 18% while that of the ribbed frames rises from 38% to 82%,showing the energy-dissipation law in the whole damage process.It draws the conclusion that the energy-dissipation contribution rate based on energy theory could effectively reflact the energy-dissipation law of the components,and it could also be applied to study the energy-dissipation mechanism of multi-ribbed composite wall and the collapse resistance capacity of frame structure infilled with multi-ribbed composite wall under earthquakes.
The damage process and energy-dissipation contribution rate of the fundamental element in multi-ribbed composite wall are studied for the purpose of providing a reference for the effect on seismic collapse resistance capacity of frame structure infilled with multi-ribbed composite wall.Based on energy theory,the local damage index and general damage index are proposed.And then the energy-dissipation contribution rate of the components in fundamental element is calculated,where that of the blocks decreases from 62% to 18% while that of the ribbed frames rises from 38% to 82%,showing the energy-dissipation law in the whole damage process.It draws the conclusion that the energy-dissipation contribution rate based on energy theory could effectively reflact the energy-dissipation law of the components,and it could also be applied to study the energy-dissipation mechanism of multi-ribbed composite wall and the collapse resistance capacity of frame structure infilled with multi-ribbed composite wall under earthquakes.
引文
[1]冯远,刘宜丰,肖克艰,等.来自汶川大地震亲历者的第一手资料-结构工程师的视界与思考[M].北京:中国建筑工业出版社,2009.(Feng Yuan,Liu Yifeng,Xiao Kejian,et al.Experi-ence the Wenchuan earthquake-structural engineers'point and view[M].Beijing:China Architecture&Building Press,2009.)
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[7]Wu Chengqing,Hao Hong,Lu Yong.Dynamic re-sponse and damage analysis of masonry structuresand masonry infilled rc frames to blast ground mo-tion[J].Engineering Structures,2005(27):323-333.
[8]Hao Hong,Ma Guowei,Lu Yong.Damage assess-ment of masonry infilled RC frames subjected toblasting induced ground excitations[J].EngineeringStructure,2002(24):799-809.
[9]Wu Chengqing,Hao Hong.Numerical simulation ofstructural response and damage to simultaneousground shock and air blast loads[J].InternationalJournal of Impact Engineering,2007(34)556–572.
[10]Abu-Lebdeh T M,Voyiadjis G Z.Plasticity-damagemodel for concrete under cyclic multiaxial loading[J].Journal of Engineering Mechanics,1993,119(7):1465-1484.
[11]Grassl P,Jirasek M.Damage-plastic for concrete fail-ure[J].International Journal of Solids and Structure,2006(43):7166-7196.
[12]瞿岳前,梁兴文,田野.基于能量分析的地震损伤性能评估[J].世界地震工程,2006,22(1):109-114.(Qu Yueqian,Liang Xingwen,Tian Ye.Evaluationof seismic damage performance based on energy a-nalysis[J].World Earthquake Engineering,2006,22(1):109-114.)
[13]Rustem S.Structural damage evaluation-theory andapplications to earthquake engineering[D].Califor-nia:California Institute of Technology,2004.
[14]Hanganu A D,Onate E,Barbat A H.A finite elementmethodology for local/global damage evaluation incivil engineering structures[J].Computers andStructure,2002(80):1667-1687.
[15]Contrafatto L,Cuomo M.A framework of elastic-plastic damaging model for concrete under multiaxialstress states[J].International Journal of Plasticity,2006(22):2272-2300.
[16]Kratzig W B,Polling R.An elasto-plastic damagemodel for reinforced concrete with minimum numberof material parameters[J].Computers and Struc-tures,2004(82):1201-1215.
[17]喻磊.密肋复合墙板框格单元在地震作用下的受力机理及弹塑性损伤模型研究[D].西安:西安建筑科技大学,2006.(Yu Lei.Research on load-bearing mechanism andelastic-plastic damage model of fundamental masonryinfilled frames in multi-ribbed wall subject to seismicload[D].Xi'an:Xi'an University of Architecture&Technology,2006.)
[18]马千里.钢筋混凝土框架结构基于能量抗震设计方法研究[D].北京:清华大学,2009.(Ma Qianli.Study on energy-based seismic designmethodology and application for RC frames[D].Beijing:Tsinghua University,2009.)
[2]清华大学.汶川地震建筑震害分析及设计对策[M].北京:中国建筑工业出版社,2009.(Tsinghua University.Analysis on seismic damageand design measure of architecture structure in wen-chuan earthquake[M].Beijing:China Architecture&Building Press,2009.)
[3]曲哲.摇摆墙-框架结构抗震损伤机制控制及设计方法研究[D].北京:清华大学,2010.(Qu Zhe.Study on seismic damage mechanism con-trol and design of rocking wall-frame structure[D].Beijing:Tsinghua University,2010.)
[4]姚谦峰,黄炜,田浩,等.密肋复合墙体受力机理及抗震性能试验研究[J].建筑结构学报,2004(12):67-74.(Yao Qianfeng,Huang Wei,Tian Hao,et al.Experi-mental analyses of mechanical characteristics andseismic performance of multi-ribbed panel wall[J].Journal of Building Structures,2004(12):67-74.)
[5]熊耀清.密肋复合墙体损伤演化规律及损伤模型研究[D].北京:北京交通大学,2008.(Xiong Yaoqing.Study on damage evolution ruleand damage model of multi-ribbed composite wall[D].Beijing:Beijing Jiaotong University,2008.)
[6]吴建营.混凝土弹塑性损伤本构模型研究Ⅰ:基本公式[J].土木工程学报,2005,38(9):14-20.(Wu Jianyun.Elastoplastic damage constitutive mod-el for concrete based on damage energy release ratesI:basic formulations[J].China Civil EngineeringJournal,2005,38(9):14-20.)
[7]Wu Chengqing,Hao Hong,Lu Yong.Dynamic re-sponse and damage analysis of masonry structuresand masonry infilled rc frames to blast ground mo-tion[J].Engineering Structures,2005(27):323-333.
[8]Hao Hong,Ma Guowei,Lu Yong.Damage assess-ment of masonry infilled RC frames subjected toblasting induced ground excitations[J].EngineeringStructure,2002(24):799-809.
[9]Wu Chengqing,Hao Hong.Numerical simulation ofstructural response and damage to simultaneousground shock and air blast loads[J].InternationalJournal of Impact Engineering,2007(34)556–572.
[10]Abu-Lebdeh T M,Voyiadjis G Z.Plasticity-damagemodel for concrete under cyclic multiaxial loading[J].Journal of Engineering Mechanics,1993,119(7):1465-1484.
[11]Grassl P,Jirasek M.Damage-plastic for concrete fail-ure[J].International Journal of Solids and Structure,2006(43):7166-7196.
[12]瞿岳前,梁兴文,田野.基于能量分析的地震损伤性能评估[J].世界地震工程,2006,22(1):109-114.(Qu Yueqian,Liang Xingwen,Tian Ye.Evaluationof seismic damage performance based on energy a-nalysis[J].World Earthquake Engineering,2006,22(1):109-114.)
[13]Rustem S.Structural damage evaluation-theory andapplications to earthquake engineering[D].Califor-nia:California Institute of Technology,2004.
[14]Hanganu A D,Onate E,Barbat A H.A finite elementmethodology for local/global damage evaluation incivil engineering structures[J].Computers andStructure,2002(80):1667-1687.
[15]Contrafatto L,Cuomo M.A framework of elastic-plastic damaging model for concrete under multiaxialstress states[J].International Journal of Plasticity,2006(22):2272-2300.
[16]Kratzig W B,Polling R.An elasto-plastic damagemodel for reinforced concrete with minimum numberof material parameters[J].Computers and Struc-tures,2004(82):1201-1215.
[17]喻磊.密肋复合墙板框格单元在地震作用下的受力机理及弹塑性损伤模型研究[D].西安:西安建筑科技大学,2006.(Yu Lei.Research on load-bearing mechanism andelastic-plastic damage model of fundamental masonryinfilled frames in multi-ribbed wall subject to seismicload[D].Xi'an:Xi'an University of Architecture&Technology,2006.)
[18]马千里.钢筋混凝土框架结构基于能量抗震设计方法研究[D].北京:清华大学,2009.(Ma Qianli.Study on energy-based seismic designmethodology and application for RC frames[D].Beijing:Tsinghua University,2009.)
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