速度脉冲地震作用下竖向不规则结构位移延性需求分析
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摘要
研究速度大脉冲地震作用下结构底层刚度、强度以及两者组合竖向不规则剪切型结构的抗震位移延性需求。选取8条近断层速度大脉冲地震记录,以集中质量剪切型多自由度模型结构为分析对象,通过非线性动力时程分析,研究速度脉冲地震效应和底层竖向不规则综合不利条件下,结构抗震位移延性需求及其沿楼层分布模式的变化规律。分析结果表明:速度脉冲地震作用下竖向不规则结构有更大的位移延性需求;底层强度不规则比底层强度和刚度组合不规则对结构最大层间位移延性需求的影响大,底层刚度不规则时位移延性需求表现出不同的规律;单独减小底层强度或同时减小底层强度和刚度均会增大结构底层位移延性需求而削弱其他楼层位移延性需求,而单独减小底层刚度会使所有楼层位移延性需求均有不同程度的减小。
This paper analyses the seismic displacement ductility demand of structures,which have vertical irregularities in strength,stiffness and combined strength-and-stiffness irregularities in first story and are subjected to velocity pulse-like ground motions.Based on lumped mass shear-type multi-degree-of-freedom models and 8 near-fault pulse-like ground motions,nonlinear dynamic time history analysis was performed to these structures.The structural displacement ductility demand and its distribution mode were studied considering velocity pulse effects and vertical irregularities.The results demonstrate that the displacement ductility demand is larger in these structures when considering velocity pulse-like effects.Meanwhile,the influence of strength irregularities on the maximum inter-story displacement ductility demand is larger than that of combined strength-and-stiffness irregularities,and the influence of stiffness irregularities is different.It also shows that singly reducing first story strength or simultaneously reducing first story strength and stiffness increases displacement ductility demand in the first story and decreases it in other stories,but singly reducing first story stiffness decreases all inter-story displacement ductility demand.
This paper analyses the seismic displacement ductility demand of structures,which have vertical irregularities in strength,stiffness and combined strength-and-stiffness irregularities in first story and are subjected to velocity pulse-like ground motions.Based on lumped mass shear-type multi-degree-of-freedom models and 8 near-fault pulse-like ground motions,nonlinear dynamic time history analysis was performed to these structures.The structural displacement ductility demand and its distribution mode were studied considering velocity pulse effects and vertical irregularities.The results demonstrate that the displacement ductility demand is larger in these structures when considering velocity pulse-like effects.Meanwhile,the influence of strength irregularities on the maximum inter-story displacement ductility demand is larger than that of combined strength-and-stiffness irregularities,and the influence of stiffness irregularities is different.It also shows that singly reducing first story strength or simultaneously reducing first story strength and stiffness increases displacement ductility demand in the first story and decreases it in other stories,but singly reducing first story stiffness decreases all inter-story displacement ductility demand.
引文
[1]Moehle J P,Hamburger R O.The PEER tall buildingsinitiative guidelines[R].Pacific Earthquake EngineeringResearch Center,University of California,Berkeley,USA,2008
[2]Bertero V V,Mahin S A,Herrera R A.Aseismic designimplication of near-fault San Fernando earthquake records[J].Earthquake Engineering and Structural Dynamics,1978,6(1):31-42
[3]Krawinkler H,Medina R,Alavi B.Seismic drift and ductilitydemands and their dependence on ground motions[J].Engineering Structures,2003,25(5):637-653
[4]AS/NZS 1170.4 standard,structural design actions-Part 4earthquake actions[S].General Design Requirement andLoading on Structures,Australian/New Zealand,2004
[5]赵凤新,韦韬,张郁山.近断层速度脉冲对钢筋混凝土框架结构地震反应的影响[J].工程力学,2008,25(10):180-186(Zhao Fengxin,Wei Tao,Zhang Yushan.Influence of near-fault velocity pulse on the seismicresponse of reinfored concrete frame[J].EngineeringMechanics,2008,25(10):180-186(in Chinese))
[6]易伟建,张冰.近场地震作用下框架结构的损伤机理[J].自然灾害学报,2007,16(2):112-117(Yi Weijian,Zhang Bing.Damage mechanism of frame structures underaction of near-field earhquake[J].Journal of Natu r alDisasters,2007,16(2):112-117(in Chinese))
[7]唐玉红,张敏政,戴君武.钢筋混凝土结构在近场脉冲型地震作用下的试验分析[J].世界地震工程,2007,23(3):41-46(Tang Yuhong,Zhang Minzheng,Dai Junwu.Experiment and analysis of reinforced concrete frame undernear-field pulsetype ground motion[J].World EarthquakeEngineering,2007,23(3):41-46(in Chinese))
[8]卢明奇,田玉基,杨庆山.近断层地震作用下高层建筑结构地震响应分析[J].哈尔滨工业大学学报,2007,39(2):314-317(Lu Mingqi,Tian Yuji,Yang Qingshan.Analysis of seismic response of high-rise building to near-fault ground motions[J].Journal of Harbin Institute ofTechnology,2007,39(2):314-317(in Chinese))
[9]杨迪雄,潘建伟,李刚.近断层脉冲型地震动作用下建筑结构的层间变形分布特征和机理分析[J].建筑结构学报,2009,30(4):108-118(Yang Dixiong,PanJianwei,Li Gang.Deformational distribution feature andmechanism analysis of building structures subjected tonear-fault pulse-type ground motions[J].Journal of BuildingStructures,2009,30(4):108-118(in Chinese))
[10]Liu Qifang,Li Xiaojun.Preliminary analysis of the hangingwall effect and velocity pulse of the 5.12 Wenchuanearthquake[J].Earthquake Engineering and StructuralVibration,2009,8(2):55-59
[11]Soni D P,Mistry B B.Qualitative reviewof seismic responseof vertically irregular building fames[J].ISET Journal ofEarthquake Technology,2006,43(4):121-132
[12]周靖,赵卫锋,刘智林.竖向不规则结构抗震性能研究现状及其在设计规范中的应用[J].力学进展,2009,39(1):51-60(Zhou Jing,Zhao Weifeng,Liu Zhiling.Recent advances in research on seismic performance ofvertical irregular structures and applications to seismiccodes[J].Advances in Mechanics,2009,39(1):51-60(in Chinese))
[13]Athanassiadou C J.Seismic performance of RC plane framesirregular in elevation[J].Engineering Structures,2008,30(5):1250-1261
[14]Lee H S,Ko D W.Seismic response characteristics of high-rise RC wall buildings having different irregularities inlower stories[J].Engineering Structures,2007,29(11):3149-3167
[15]Chintanapakdee C,Chopra A K.Seismic response ofvertically irregular frames:response history and modalpushover analyses[J].Journal of Structural Engineering,2004,130(8):1177-1185
[16]钱稼茹,戴夫聪,赵作周.北京金地中心不规则框架模型抗震性能试验研究[J].建筑结构学报,2005,26(5):46-59(Qian Jiaru,Dai Fucong,Zhao Zuozhou.Experimental study on seismic behavior of BeijingGoldfield Center irregular RC frammeodels[J].Journal ofBuilding Structures,2005,26(5):46-59(in Chinese))
[17]沈朝勇,吴波,周福霖,等.高层错位转换结构的试验研究和理论分析[J].地震工程与工程振动,2006,26(2):33-40(Shen Chaoyong,Wu Bo,Zhou Fulin,et al.Influence of stagger transfer structure on a tall building:shaking table test and FEM analysis[J].EarthquakeEngineering and Engineering Vibration,2006,26(2):33-40(in Chinese))
[18]唐曹明,徐培福,徐自国.钢筋混凝土框架结构楼层刚度比限制方法研究[J].土木工程学报,2008,42(12):128-134(Tang Caoming,Xu Peifu,Xu Ziguo.Astudy of the method for limiting the story stiffness ratio ofRC frame structures[J].China Civil Engineering Journal,2008,42(12):128-134(in Chinese))
[19]王全凤,王凌云.不规则框架-剪力墙结构的地震反应[J].地震工程与工程振动,2005,24(4):105-111(WangQuanfeng,Wang Lingyun.Seismic response of irregularframe-shear wall structures[J].Earthquake Engineering andEngineering Vibration,2005,24(4):105-111(in Chinese))
[20]门进杰,史庆轩,周琦.竖向不规则钢筋混凝土框架结构基于性能的抗震设计方法[J].土木工程学报,2008,41(9):67-75(Men Jinjie,Shi Qingxuan,Zhou Qi.Method ofperformance based seismic design for vertically irregularreinforced concrete frame structures[J].China CivilEngineering Journal,2008,41(9):67-75(in Chinese))
[21]杨克家,梁兴文,李波.带加强层高层建筑中加强层刚度的合理取值[J].哈尔滨工业大学学报,2009,41(10):193-196(Yang Kejia,Liang Xingwen,Li Bo.Rationalstiffness of outriggers in high-rise structure with strengthenedstories[J].Journal of Harbin Institute of Technology,2009,41(10):193-196(in Chinese))
[22]张凯,刘洪兵,王巍峰,等.竖向不规则结构的抗震性能评估[J].振动与冲击,2009,28(7):175-178(ZhangKai,Liu Hongbing,WangWeifeng,et al.Seismic performanceevaluation for a vertical irregular structure[J].Journal ofVibration and Shock,2009,28(7):175-178(in Chinese))
[23]王亚勇.概论汶川地震后我国建筑抗震设计标准的修订[J].土木工程学报,2009,42(5):1-12(Wang Yayong.Anoverview of recent revision of seismic design codes after the5.12 Wenchuan Earthquake[J].China Civil EngineeringJournal,2009,42(5):1-12(in Chinese))
[24]李英民,韩军,田启祥,等.填充墙对框架结构抗震性能的影响[J].地震工程与工程振动,2009,29(3):51-58(LiYingmin,Han Jun,Tian Qixiang,et al.Study on influence ofinfilled walls on seismic performance of RC frame structures[J].Journal of Earthquake Engineering and EngineeringVibration,2009,29(3):51-58(in Chinese))
[25]GB 50011—2001建筑抗震设计规范[S](GB 50011—2001 Code for seismic design of buildings[S](in Chinese))
[26]Valmundsson E V,Nau J M.Seismic response of buildingframes with vertical structural irregularities[J].Journal ofStructural Engineering,1997,123(1):30-41
[27]Baker J W.Quantitative classification of near-fault groundmotions using wavelet analysis[J].Bulletin of theSeismological Society of America,2007,97(5):1486-1501
[28]Li K N.Three-dimensional nonlinear static/dynamicstructural analysis computer program-users’manual anddata-input manual of canny[M].Singapore,2010
[2]Bertero V V,Mahin S A,Herrera R A.Aseismic designimplication of near-fault San Fernando earthquake records[J].Earthquake Engineering and Structural Dynamics,1978,6(1):31-42
[3]Krawinkler H,Medina R,Alavi B.Seismic drift and ductilitydemands and their dependence on ground motions[J].Engineering Structures,2003,25(5):637-653
[4]AS/NZS 1170.4 standard,structural design actions-Part 4earthquake actions[S].General Design Requirement andLoading on Structures,Australian/New Zealand,2004
[5]赵凤新,韦韬,张郁山.近断层速度脉冲对钢筋混凝土框架结构地震反应的影响[J].工程力学,2008,25(10):180-186(Zhao Fengxin,Wei Tao,Zhang Yushan.Influence of near-fault velocity pulse on the seismicresponse of reinfored concrete frame[J].EngineeringMechanics,2008,25(10):180-186(in Chinese))
[6]易伟建,张冰.近场地震作用下框架结构的损伤机理[J].自然灾害学报,2007,16(2):112-117(Yi Weijian,Zhang Bing.Damage mechanism of frame structures underaction of near-field earhquake[J].Journal of Natu r alDisasters,2007,16(2):112-117(in Chinese))
[7]唐玉红,张敏政,戴君武.钢筋混凝土结构在近场脉冲型地震作用下的试验分析[J].世界地震工程,2007,23(3):41-46(Tang Yuhong,Zhang Minzheng,Dai Junwu.Experiment and analysis of reinforced concrete frame undernear-field pulsetype ground motion[J].World EarthquakeEngineering,2007,23(3):41-46(in Chinese))
[8]卢明奇,田玉基,杨庆山.近断层地震作用下高层建筑结构地震响应分析[J].哈尔滨工业大学学报,2007,39(2):314-317(Lu Mingqi,Tian Yuji,Yang Qingshan.Analysis of seismic response of high-rise building to near-fault ground motions[J].Journal of Harbin Institute ofTechnology,2007,39(2):314-317(in Chinese))
[9]杨迪雄,潘建伟,李刚.近断层脉冲型地震动作用下建筑结构的层间变形分布特征和机理分析[J].建筑结构学报,2009,30(4):108-118(Yang Dixiong,PanJianwei,Li Gang.Deformational distribution feature andmechanism analysis of building structures subjected tonear-fault pulse-type ground motions[J].Journal of BuildingStructures,2009,30(4):108-118(in Chinese))
[10]Liu Qifang,Li Xiaojun.Preliminary analysis of the hangingwall effect and velocity pulse of the 5.12 Wenchuanearthquake[J].Earthquake Engineering and StructuralVibration,2009,8(2):55-59
[11]Soni D P,Mistry B B.Qualitative reviewof seismic responseof vertically irregular building fames[J].ISET Journal ofEarthquake Technology,2006,43(4):121-132
[12]周靖,赵卫锋,刘智林.竖向不规则结构抗震性能研究现状及其在设计规范中的应用[J].力学进展,2009,39(1):51-60(Zhou Jing,Zhao Weifeng,Liu Zhiling.Recent advances in research on seismic performance ofvertical irregular structures and applications to seismiccodes[J].Advances in Mechanics,2009,39(1):51-60(in Chinese))
[13]Athanassiadou C J.Seismic performance of RC plane framesirregular in elevation[J].Engineering Structures,2008,30(5):1250-1261
[14]Lee H S,Ko D W.Seismic response characteristics of high-rise RC wall buildings having different irregularities inlower stories[J].Engineering Structures,2007,29(11):3149-3167
[15]Chintanapakdee C,Chopra A K.Seismic response ofvertically irregular frames:response history and modalpushover analyses[J].Journal of Structural Engineering,2004,130(8):1177-1185
[16]钱稼茹,戴夫聪,赵作周.北京金地中心不规则框架模型抗震性能试验研究[J].建筑结构学报,2005,26(5):46-59(Qian Jiaru,Dai Fucong,Zhao Zuozhou.Experimental study on seismic behavior of BeijingGoldfield Center irregular RC frammeodels[J].Journal ofBuilding Structures,2005,26(5):46-59(in Chinese))
[17]沈朝勇,吴波,周福霖,等.高层错位转换结构的试验研究和理论分析[J].地震工程与工程振动,2006,26(2):33-40(Shen Chaoyong,Wu Bo,Zhou Fulin,et al.Influence of stagger transfer structure on a tall building:shaking table test and FEM analysis[J].EarthquakeEngineering and Engineering Vibration,2006,26(2):33-40(in Chinese))
[18]唐曹明,徐培福,徐自国.钢筋混凝土框架结构楼层刚度比限制方法研究[J].土木工程学报,2008,42(12):128-134(Tang Caoming,Xu Peifu,Xu Ziguo.Astudy of the method for limiting the story stiffness ratio ofRC frame structures[J].China Civil Engineering Journal,2008,42(12):128-134(in Chinese))
[19]王全凤,王凌云.不规则框架-剪力墙结构的地震反应[J].地震工程与工程振动,2005,24(4):105-111(WangQuanfeng,Wang Lingyun.Seismic response of irregularframe-shear wall structures[J].Earthquake Engineering andEngineering Vibration,2005,24(4):105-111(in Chinese))
[20]门进杰,史庆轩,周琦.竖向不规则钢筋混凝土框架结构基于性能的抗震设计方法[J].土木工程学报,2008,41(9):67-75(Men Jinjie,Shi Qingxuan,Zhou Qi.Method ofperformance based seismic design for vertically irregularreinforced concrete frame structures[J].China CivilEngineering Journal,2008,41(9):67-75(in Chinese))
[21]杨克家,梁兴文,李波.带加强层高层建筑中加强层刚度的合理取值[J].哈尔滨工业大学学报,2009,41(10):193-196(Yang Kejia,Liang Xingwen,Li Bo.Rationalstiffness of outriggers in high-rise structure with strengthenedstories[J].Journal of Harbin Institute of Technology,2009,41(10):193-196(in Chinese))
[22]张凯,刘洪兵,王巍峰,等.竖向不规则结构的抗震性能评估[J].振动与冲击,2009,28(7):175-178(ZhangKai,Liu Hongbing,WangWeifeng,et al.Seismic performanceevaluation for a vertical irregular structure[J].Journal ofVibration and Shock,2009,28(7):175-178(in Chinese))
[23]王亚勇.概论汶川地震后我国建筑抗震设计标准的修订[J].土木工程学报,2009,42(5):1-12(Wang Yayong.Anoverview of recent revision of seismic design codes after the5.12 Wenchuan Earthquake[J].China Civil EngineeringJournal,2009,42(5):1-12(in Chinese))
[24]李英民,韩军,田启祥,等.填充墙对框架结构抗震性能的影响[J].地震工程与工程振动,2009,29(3):51-58(LiYingmin,Han Jun,Tian Qixiang,et al.Study on influence ofinfilled walls on seismic performance of RC frame structures[J].Journal of Earthquake Engineering and EngineeringVibration,2009,29(3):51-58(in Chinese))
[25]GB 50011—2001建筑抗震设计规范[S](GB 50011—2001 Code for seismic design of buildings[S](in Chinese))
[26]Valmundsson E V,Nau J M.Seismic response of buildingframes with vertical structural irregularities[J].Journal ofStructural Engineering,1997,123(1):30-41
[27]Baker J W.Quantitative classification of near-fault groundmotions using wavelet analysis[J].Bulletin of theSeismological Society of America,2007,97(5):1486-1501
[28]Li K N.Three-dimensional nonlinear static/dynamicstructural analysis computer program-users’manual anddata-input manual of canny[M].Singapore,2010
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