三维地震动输入对IDA倒塌易损性分析的影响
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摘要
地震作用下建筑结构抗倒塌能力是性能化抗震设计的核心目标,基于IDA的倒塌易损性分析能够定量评价结构的抗地震倒塌安全性。本文通过一个8层RC框架结构和一个20层RC框架-核心筒结构的算例,指出仅考虑地震动单一水平分量的IDA分析会高估结构抗地震倒塌安全性;而三维地震动输入下结构可能出现更多的倒塌模式,可更全面地体现整体结构的抗震薄弱部位。
Collapse safety is the most important objective of performance-based seismic design,and IDA(incremental dynamic analysis)-based collapse fragility analysis is able to quantitatively evaluate structural collapse safety under earthquakes.In this paper,it is illustrated that IDA considering single horizontal component of ground motion will over-estimate structural collapse safety through examples of an 8-storey RC frame structure and a 20-storey RC frame-core wall structure.More collapse modes may be appear with three-dimensional ground motion input,so that more potential seismic vulnerability is clearly exposed.Therefore,IDA considering three-dimensional ground motion input should be adopted for collapse safety evaluation.
Collapse safety is the most important objective of performance-based seismic design,and IDA(incremental dynamic analysis)-based collapse fragility analysis is able to quantitatively evaluate structural collapse safety under earthquakes.In this paper,it is illustrated that IDA considering single horizontal component of ground motion will over-estimate structural collapse safety through examples of an 8-storey RC frame structure and a 20-storey RC frame-core wall structure.More collapse modes may be appear with three-dimensional ground motion input,so that more potential seismic vulnerability is clearly exposed.Therefore,IDA considering three-dimensional ground motion input should be adopted for collapse safety evaluation.
引文
[1]Vamvatsikos D,Cornell C A.Incremental dynamicanalysis[J].Earthquake Engineering and StructureDynamics,2002,31(3):491～514
[2]杨俊芬,顾强,何涛,彭奕亮.用增量动力分析方法求解人字形中心支撑钢框架的结构影响系数和位移方法系数(I)-方法[J].地震工程与工程振动,2010,30(2):64～71Yang J F,Gu Q,He T,Peng Y L.Responsemodification factor and displacement amplificationfactorfor inverted V-CBSFs based on IDA(Ⅰ):Method[J].Journal of Earthquake Engineering andEngineering Vibration,2010,30(2):64～71(inChinese)
[3]周颖,吕西林,卜一.增量动力分析法在高层混合结构性能评估中的应用[J].同济大学学报(自然科学版),2010,38(2):183～193Zhou Y,Lv X L,Bo Y.Application of incrementaldynamic analysis to seismic evaluation of hybridstructure[J].Journal of Tongji University(NaturalScience),2010,38(2):183～193(in Chinese)
[4]汪梦甫,曹秀娟,孙文林.增量动力分析方法的改进及其在高层混合结构地震危害性评估中的应用[J].工程抗震与加固改造,2010,32(1):104～121Wang M F,Cao X J,Sun W L.Incremental dynamicanalysis applied to seismic risk assessment of hybridstructure[J].Earthquake Resistant Engineering andRetrofitting,2010,32(1):104～121(in Chinese)
[5]马千里,叶列平,陆新征,缪志伟.采用逐步增量弹塑性时程方法对RC框架结构推覆分析侧力模式的研究[J].建筑结构学报,2008,29(2):132～140Ma Q L,Ye L P,Lu X Z,Miao Z W.Study on lateralload patterns of pushover analysis using incrementaldynamical analysis for RC frame structures[J].Journalof Building Structures,2008,29(2):132～140(inChinese)
[6]缪志伟,马千里,叶列平,陆新征.Pushover方法的准确性和适用性研究[J].工程抗震与加固改造,2008,30(1):55～59Miao Z W,Ma Q L,Ye L P,Lu X Z.Study on theaccuracy and applicability of the pushover analysis[J].Earthquake Resistant Engineering and Retrofitting,2008,30(1):55～59(in Chinese)
[7]Applied Technical Council,Federal EmergencyManagement Agent.Quantification of Building SeismicPerformance Factors[R].California,2009
[8]陆新征,叶列平.基于IDA分析的结构抗地震倒塌能力研究[J].工程抗震与加固改造,2010,32(1):13-18Lu X Z,Ye L P.Study on the seismic collapseresistance of structural system[J].EarthquakeResistant Engineering and Retrofitting,2010,32(1):13～18(in Chinese)
[9]Federal Emergency Management Agent.NEHRPRecommended Seismic Provisions[S].Washington,D.C.,2009
[10]施炜,叶列平,陆新征,唐代远.不同抗震设防RC框架结构抗倒塌能力的研究[J].工程力学,2010,27(12)Shi W,Ye L P,Lu X Z,Tang D Y.Study on thecollapse-resistant capacity of RC frames with differentseismic fortification levels[J].Engineering Mechanics,2010,27(2)(in Chinese)
[11]唐代远,陆新征,叶列平,施炜.柱轴压比对我国RC框架结构抗地震倒塌能力的影响[J].工程抗震与加固改造,2010,32(5)Tang D Y,Lu X Z,Ye L P,Shi W.Influence of axialcompression ratio to the seismic collapse resistance ofRC frame structures[J].Earthquake ResistantEngineering and Retrofitting,2010,32(5)(inChinese)
[12]叶列平,陆新征,赵世春,李易.框架结构抗地震倒塌能力的研究——汶川地震极震区几个框架结构震害案例分析[J].建筑结构学报,2009,30(6):67～76Ye L P,Lu X Z,Zhao S C,Li Y.Seismic collapseresistance of RC frame structures——Case studies onseismic damages of several RC frame structuresunderextreme ground motion in Wenchuan Earthquake[J].Journal of Building Structures,2009,30(6):67～76(in Chinese)
[13]佘师和.竖向地震反应谱[J].哈尔滨建筑工程学院学报,1982,(2):26～39She S H.Response spectrum of vertical earthquake[J].Journal of Harbin University of Civil Engineeringand Architecture,1982,(2):26～39(in Chinese)
[14]Lu X Z,Lin X C,Ma Y H,Li Y,Ye L P.Numericalsimulation for the progressive collapse of concretebuilding due to earthquake[A].Proc.the 14th WorldConference on Earthquake Engineering[C].October 12-17,2008,Beijing,China,CDROM
[15]陆新征,林旭川,叶列平,李易,唐代远.地震下高层建筑连续倒塌的数值模型研究[J].工程力学,2010,27(11)Lu X Z,Lin X C,Ye L P,Li Y,Tang D Y.Numericalmodels for earthquake induced progressive collapse ofhigh-rise buildings[J].Engineering Mechanics,2010,27(11)(in Chinese)
[16]陆新征,叶列平,缪志伟.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2009Lu X Z,Ye L P,Miao Z W.Elasto-plastic Analysis ofBuilding Against Earthquake[M].Beijing,ChinaArchitecture and Building Press,2009(in Chinese)
[17]GB 50011-2001,建筑抗震设计规范[S]GB 50011-2001,Code for Seismic Design of Buildings[S](in Chinese)
[2]杨俊芬,顾强,何涛,彭奕亮.用增量动力分析方法求解人字形中心支撑钢框架的结构影响系数和位移方法系数(I)-方法[J].地震工程与工程振动,2010,30(2):64～71Yang J F,Gu Q,He T,Peng Y L.Responsemodification factor and displacement amplificationfactorfor inverted V-CBSFs based on IDA(Ⅰ):Method[J].Journal of Earthquake Engineering andEngineering Vibration,2010,30(2):64～71(inChinese)
[3]周颖,吕西林,卜一.增量动力分析法在高层混合结构性能评估中的应用[J].同济大学学报(自然科学版),2010,38(2):183～193Zhou Y,Lv X L,Bo Y.Application of incrementaldynamic analysis to seismic evaluation of hybridstructure[J].Journal of Tongji University(NaturalScience),2010,38(2):183～193(in Chinese)
[4]汪梦甫,曹秀娟,孙文林.增量动力分析方法的改进及其在高层混合结构地震危害性评估中的应用[J].工程抗震与加固改造,2010,32(1):104～121Wang M F,Cao X J,Sun W L.Incremental dynamicanalysis applied to seismic risk assessment of hybridstructure[J].Earthquake Resistant Engineering andRetrofitting,2010,32(1):104～121(in Chinese)
[5]马千里,叶列平,陆新征,缪志伟.采用逐步增量弹塑性时程方法对RC框架结构推覆分析侧力模式的研究[J].建筑结构学报,2008,29(2):132～140Ma Q L,Ye L P,Lu X Z,Miao Z W.Study on lateralload patterns of pushover analysis using incrementaldynamical analysis for RC frame structures[J].Journalof Building Structures,2008,29(2):132～140(inChinese)
[6]缪志伟,马千里,叶列平,陆新征.Pushover方法的准确性和适用性研究[J].工程抗震与加固改造,2008,30(1):55～59Miao Z W,Ma Q L,Ye L P,Lu X Z.Study on theaccuracy and applicability of the pushover analysis[J].Earthquake Resistant Engineering and Retrofitting,2008,30(1):55～59(in Chinese)
[7]Applied Technical Council,Federal EmergencyManagement Agent.Quantification of Building SeismicPerformance Factors[R].California,2009
[8]陆新征,叶列平.基于IDA分析的结构抗地震倒塌能力研究[J].工程抗震与加固改造,2010,32(1):13-18Lu X Z,Ye L P.Study on the seismic collapseresistance of structural system[J].EarthquakeResistant Engineering and Retrofitting,2010,32(1):13～18(in Chinese)
[9]Federal Emergency Management Agent.NEHRPRecommended Seismic Provisions[S].Washington,D.C.,2009
[10]施炜,叶列平,陆新征,唐代远.不同抗震设防RC框架结构抗倒塌能力的研究[J].工程力学,2010,27(12)Shi W,Ye L P,Lu X Z,Tang D Y.Study on thecollapse-resistant capacity of RC frames with differentseismic fortification levels[J].Engineering Mechanics,2010,27(2)(in Chinese)
[11]唐代远,陆新征,叶列平,施炜.柱轴压比对我国RC框架结构抗地震倒塌能力的影响[J].工程抗震与加固改造,2010,32(5)Tang D Y,Lu X Z,Ye L P,Shi W.Influence of axialcompression ratio to the seismic collapse resistance ofRC frame structures[J].Earthquake ResistantEngineering and Retrofitting,2010,32(5)(inChinese)
[12]叶列平,陆新征,赵世春,李易.框架结构抗地震倒塌能力的研究——汶川地震极震区几个框架结构震害案例分析[J].建筑结构学报,2009,30(6):67～76Ye L P,Lu X Z,Zhao S C,Li Y.Seismic collapseresistance of RC frame structures——Case studies onseismic damages of several RC frame structuresunderextreme ground motion in Wenchuan Earthquake[J].Journal of Building Structures,2009,30(6):67～76(in Chinese)
[13]佘师和.竖向地震反应谱[J].哈尔滨建筑工程学院学报,1982,(2):26～39She S H.Response spectrum of vertical earthquake[J].Journal of Harbin University of Civil Engineeringand Architecture,1982,(2):26～39(in Chinese)
[14]Lu X Z,Lin X C,Ma Y H,Li Y,Ye L P.Numericalsimulation for the progressive collapse of concretebuilding due to earthquake[A].Proc.the 14th WorldConference on Earthquake Engineering[C].October 12-17,2008,Beijing,China,CDROM
[15]陆新征,林旭川,叶列平,李易,唐代远.地震下高层建筑连续倒塌的数值模型研究[J].工程力学,2010,27(11)Lu X Z,Lin X C,Ye L P,Li Y,Tang D Y.Numericalmodels for earthquake induced progressive collapse ofhigh-rise buildings[J].Engineering Mechanics,2010,27(11)(in Chinese)
[16]陆新征,叶列平,缪志伟.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2009Lu X Z,Ye L P,Miao Z W.Elasto-plastic Analysis ofBuilding Against Earthquake[M].Beijing,ChinaArchitecture and Building Press,2009(in Chinese)
[17]GB 50011-2001,建筑抗震设计规范[S]GB 50011-2001,Code for Seismic Design of Buildings[S](in Chinese)
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