钢筋混凝土柱基于易损性曲线的地震损伤评估
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摘要
为评估地震作用下结构构件的损伤程度,建立基于竖向剩余承载力的损伤指标,提出钢筋混凝土柱基于易损性曲线的地震损伤评估方法。该方法对钢筋混凝土柱采用精细化分析模型,避免单自由度体系假设,通过增量动力分析获得对数正态分布形式的易损性曲线,进行地震损伤程度评估。研究表明:所提出的地震损伤评估方法,计算简单,能有效评估钢筋混凝土柱在不同地震动强度指标下的损伤程度,为震后钢筋混凝土结构的安全评估和修复加固提供了理论依据。
To evaluate the damage extent of structural members under earthquake,a method of vulnerability curves based seismic damage assessment for reinforced concrete columns is proposed,using the damage index which is based on the vertical residual capacity.By means of adopting the refined analysis model which avoids assuming RC column as the single-degree-freedom system,the vulnerability curves with lognormal distribution are constructed by incremental dynamic analysis for its damage assessment.It is demonstrated that the proposed method of damage assessment for reinforced concrete columns is simple in calculation as well as effective in evaluating the damage extent for different seismic intensity indices,and could provide theoretical evidence for safety evaluation and rehabilitation after earthquake.
To evaluate the damage extent of structural members under earthquake,a method of vulnerability curves based seismic damage assessment for reinforced concrete columns is proposed,using the damage index which is based on the vertical residual capacity.By means of adopting the refined analysis model which avoids assuming RC column as the single-degree-freedom system,the vulnerability curves with lognormal distribution are constructed by incremental dynamic analysis for its damage assessment.It is demonstrated that the proposed method of damage assessment for reinforced concrete columns is simple in calculation as well as effective in evaluating the damage extent for different seismic intensity indices,and could provide theoretical evidence for safety evaluation and rehabilitation after earthquake.
引文
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[3]刁波,李淑春,叶英华.反复荷载作用下混凝土异形柱结构累积损伤分析及试验研究[J].建筑结构学报,2008,29(1):57―63.Diao Bo,Li Shuchun,Ye Yinghua.Analysis andexperiment of cumulated damage of RC structures withspecial columns under cyclic loading[J].Journal ofBuilding Structures,2008,29(1):57―63.(in Chinese)
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[11]师燕超.爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D].天津:天津大学,2009.Shi Yanchao.Dynamic response and damage mechanismof reinforced concrete structures under blast loading[D].Tianjin:Tianjin University,2009.(in Chinese)
[12]Nishida H,Unjoh S.Dynamic response characteristic ofreinforced concrete column subjected to bilateralearthquake ground motions[C].13th World Conferenceon Earthquake Engineering,Canada Vancouver,2004.
[13]Weatherby J H.Investigation of bond slip betweenconcrete and steel reinforcement under dynamic loadingconditions Mississippi[R].Mississippi State University,2003.
[14]Park Y J,Ang A H.Mechanistic seismic damage modelfor reinforced concrete[J].Journal of StructuralEngineering,1985,111(4):740―757.
[15]牛荻涛,任利杰.改进的钢筋混凝土结构双参数地震破坏模型[J].地震工程与工程振动,1996,16(4):44―54.Niu Ditao,Ren Lijie.A modified seismic damage modelwith double variables for reinforced concrete structures[J].Earthquake Engineering and Engineering Vibration,1996,16(4):44―54.(in Chinese)
[16]刘伯权.抗震结构的破坏准则及可靠性分析[M].北京:中国建材工业出版社,1996.Liu Boquan.Failure criteria and reliability analysis ofseismic structure[M].Beijing:China ArchitectureMaterial Industry Press,1996.(in Chinese)
[17]江近仁,孙景江.砖结构的地震破坏模型[J].地震工程与工程振动,1987,7(1):20―34.Jiang Jinren,Sun Jingjiang.Seismic damage model ofbrick structure[J].Earthquake Engineering andEngineering Vibration,1987,7(1):20―34.(in Chinese)
[18]Applied Technology Council.Quantification of buildingseismic performance factors,ATC-63[R].Redwood City,CA:FEMA,2008.
[19]Sucuoglu H,Yucemen S,Gezer A.Statistical evaluationof the damage potential of earthquake ground motions[J].Structural Safety,1999,20(4):357―378.
[2]Chung Y S,Meyer C,Shinozuka M.Seismic damageassessment of reinforced concrete members[R].Buffalo,NY:State University of New York,1987.
[3]刁波,李淑春,叶英华.反复荷载作用下混凝土异形柱结构累积损伤分析及试验研究[J].建筑结构学报,2008,29(1):57―63.Diao Bo,Li Shuchun,Ye Yinghua.Analysis andexperiment of cumulated damage of RC structures withspecial columns under cyclic loading[J].Journal ofBuilding Structures,2008,29(1):57―63.(in Chinese)
[4]顾祥林,黄庆华,吴周偲.钢筋混凝土柱考虑损伤累积的反复荷载-位移关系分析[J].地震工程与工程振动,2008,26(4):68―74.Gu Xianglin,Huang Qinghua,Wu Zhousai.Analysis ofload-displacement relationship for RC columns underreversed load considering accumulative damage[J].Earthquake Engineering and Engineering Vibration,2008,26(4):68―74.(in Chinese)
[5]Karim K R,Yamazaki F.Effect of earthquake groundmotions on fragility curves of highway bridge piersbased on numerical simulation[J].EarthquakeEngineering and Structural Dynamics,2001,30:1839―1856.
[6]楼思展,叶志明,陈玲俐.框架结构房屋地震灾害风险评估[J].自然灾害学报,2005,14(5):99―105.Lou Sizhan,Ye Zhiming,Chen Lingli.Seismic riskassessment of frame structure buildings[J].Journal ofNatural Disasters,2005,14(5):99―105.(in Chinese)
[7]唐代远,陆新征,叶列平,施炜.轴压比对我国RC框架结构抗地震倒塌能力的影响[C].第十二届高层建筑抗震技术交流会论文集,北京,2009.Tang Daiyuan,Lu Xinzheng,Ye Lieping,Shi Wei.Influence of axial compression ratio to the seismiccollapse resistance of RC frame structures[C].12thHigh-Rise Buildings Seismic Technology Conference,Beijing,2009.(in Chinese)
[8]Malvar L,Craford J E,Morrill K.K&C concrete materialmodel,releaseⅢ:Automated generation of materialmodel input[R].Glendale,CA:Karagozian&CaseStructural Engineers,1999.
[9]Krieg R D,Key S W.Implementation of a timedependent plasticity theory into structural computerprograms[C].Constitutive Equations in Viscoplasticity:Computational and Engineering Aspects;Proceedings ofthe Winter Annual Meeting,New York,1976:125―137.
[10]Luccioni B M,Lopez D E,Danesi R F.Bond-slip inreinforced concrete elements[J].Journal of StructuralEngineering,2005,131(11):1690―1698.
[11]师燕超.爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D].天津:天津大学,2009.Shi Yanchao.Dynamic response and damage mechanismof reinforced concrete structures under blast loading[D].Tianjin:Tianjin University,2009.(in Chinese)
[12]Nishida H,Unjoh S.Dynamic response characteristic ofreinforced concrete column subjected to bilateralearthquake ground motions[C].13th World Conferenceon Earthquake Engineering,Canada Vancouver,2004.
[13]Weatherby J H.Investigation of bond slip betweenconcrete and steel reinforcement under dynamic loadingconditions Mississippi[R].Mississippi State University,2003.
[14]Park Y J,Ang A H.Mechanistic seismic damage modelfor reinforced concrete[J].Journal of StructuralEngineering,1985,111(4):740―757.
[15]牛荻涛,任利杰.改进的钢筋混凝土结构双参数地震破坏模型[J].地震工程与工程振动,1996,16(4):44―54.Niu Ditao,Ren Lijie.A modified seismic damage modelwith double variables for reinforced concrete structures[J].Earthquake Engineering and Engineering Vibration,1996,16(4):44―54.(in Chinese)
[16]刘伯权.抗震结构的破坏准则及可靠性分析[M].北京:中国建材工业出版社,1996.Liu Boquan.Failure criteria and reliability analysis ofseismic structure[M].Beijing:China ArchitectureMaterial Industry Press,1996.(in Chinese)
[17]江近仁,孙景江.砖结构的地震破坏模型[J].地震工程与工程振动,1987,7(1):20―34.Jiang Jinren,Sun Jingjiang.Seismic damage model ofbrick structure[J].Earthquake Engineering andEngineering Vibration,1987,7(1):20―34.(in Chinese)
[18]Applied Technology Council.Quantification of buildingseismic performance factors,ATC-63[R].Redwood City,CA:FEMA,2008.
[19]Sucuoglu H,Yucemen S,Gezer A.Statistical evaluationof the damage potential of earthquake ground motions[J].Structural Safety,1999,20(4):357―378.
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