基于多维能力谱法的震损建筑抗震评价方法
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摘要
目的研究震损建筑的抗震能力评估方法,得出震损建筑的抗震能力,提出基于静力弹塑性分析的震损抗震评价方法,为编制震损建筑抗震评价标准提供基础数据.方法针对各种结构类型的震损建筑,建立考虑实际情况的多维地震作用下震损建筑结构的弹塑性损伤模型,利用刚度退化建立震损建筑模型,对结构x和y两方向进行推覆分析得到结构的能力曲线,并使用多维能力谱法对结构进行评估.结果笔者通过算例分析得出该结构性能点,x方向的损伤指数为0.77,y方向的损伤指数为0.92,多维能力谱法与简化的能力谱法结合考虑了地震的多维性更符合实际情况.结论笔者通过算例分析得到了单自由度体系下震损建筑各阶模态的结构性能目标,又通过多个振型的组合得到多自由度体系下结构的性能目标.最后由损伤指数公式算出该结构的损伤程度.笔者的方法简便、易行,可用于实际工程.
The paper aims to study the earthquake-resistant capacity assessment methods of earthquake damaged buildings,so as to get the earthquake-resistant capability of earthquake damaged buildings and then provide the basic data to the preparation of earthquake damaged buildings seismic evaluation standards based on static pushover analysis of seismic earthquake damage evaluation method.In view of various structural types of earthquake damaged buildings,considering the actual situation,this paper builds an elasto-plastic damage model of multi-dimensional seismic building structures under earthquake damaged.Taking use of the stiffness degradation model for the establishment of earthquake damaged buildings,two pairs of structures x and y direction thrust.By using structural analysis of the ability to get curves and use the multi-dimensional capacity spectrum method for structural assessment.This paper obtains the structure performance point by numerical analysis of cases,x direction of the damage index 0.77,y direction of the damage index 0.92.The multi-peacekeeping capacity spectrum method and simplified capacity spectrum method combined with multi-dimensional nature of the earthquake consider more in line with the actual situation.Through the numerical example,under a single degree of freedom system,this paper gets the construction of earthquake damaged and the structure of first-order modal performance objectives.Furthermore,through the combination of multiple vibration mode under the multi-DOF system,this paper also gets the structure of performance goals.Finally,index formula is calculated from the damage of the structure of the injury.This method is simple,easy and can be used for practical projects.
The paper aims to study the earthquake-resistant capacity assessment methods of earthquake damaged buildings,so as to get the earthquake-resistant capability of earthquake damaged buildings and then provide the basic data to the preparation of earthquake damaged buildings seismic evaluation standards based on static pushover analysis of seismic earthquake damage evaluation method.In view of various structural types of earthquake damaged buildings,considering the actual situation,this paper builds an elasto-plastic damage model of multi-dimensional seismic building structures under earthquake damaged.Taking use of the stiffness degradation model for the establishment of earthquake damaged buildings,two pairs of structures x and y direction thrust.By using structural analysis of the ability to get curves and use the multi-dimensional capacity spectrum method for structural assessment.This paper obtains the structure performance point by numerical analysis of cases,x direction of the damage index 0.77,y direction of the damage index 0.92.The multi-peacekeeping capacity spectrum method and simplified capacity spectrum method combined with multi-dimensional nature of the earthquake consider more in line with the actual situation.Through the numerical example,under a single degree of freedom system,this paper gets the construction of earthquake damaged and the structure of first-order modal performance objectives.Furthermore,through the combination of multiple vibration mode under the multi-DOF system,this paper also gets the structure of performance goals.Finally,index formula is calculated from the damage of the structure of the injury.This method is simple,easy and can be used for practical projects.
引文
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[11]冯世平,翁义军,沈聚敏.周期反复荷载下钢筋混凝土框架的试验研究和理论分析[R].北京:清华大学结构工程研究所科学研究报告,1985.(Feng Shiping,Weng Yijun,Shen Jumin.Cyclic loading of reinforced concrete framework of experi-mental research and theoretical analysis[R].Bei-jing:Tsinghua University,Institute of Structural En-gineering Research Report,1985.)
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[13]李少泉,沙镇平.高层框架-抗震墙结构在地震作用下内力重分布的近似计算[J].土木工程学报,2005,38(2):32-38.(Li Shaoquan,Sha Zhenping.High-rise frame-shear wall structure under the action of internal forces in the earthquake re-distribution of approximate calcula-tion[J].Civil Engineering Journal,2005,38(2):32-38.)
[14]Compartin C D.Seismic evaluation and retrofit of concrete buildings:a practical overview of the ATC-40document[J].Earthquake Spectrum,2000(16):241-260.
[15]Saiidi M,Sozen M A.Simple nonlinear seismic anal-ysis of RC struclures[J].Journal of Structural Divi-sion(ASCE),1981,107:937-952.
[16]Peter F.A nonlinear analysis method for perform-ance-based seismic design[J].Earthquake Spec-trum,1999(16):573-592.
[17]Li Hyuang Lee,Sang Whan Han.Determination of ductility factor considering different hysteretic mod-els[J].Earthquake Engineering and Structural Dy-namics,1999,28(9):957-997.
[18]李宏男,何浩祥.利用能力谱法对结构地震损伤评估简化方法[J].大连理工大学学报,2004,44(2):267-270.(Li Hongnan,He Haoxiang.The use of capacity spectrum method for seismic damage assessment simplified method[J].Journal of Dalian University of Technology,2004,44(2):267-270.)
[19]吴波,李惠,李玉华.结构损伤分析的力学方法[J].地震工程与工程振动,1997,17(1):14-21.(Wu Bo,Li Hui,Li Yuhua.The analysis of structural damage mechanics[J].Earthquake Engineering and Engineering Vibration,1997,17(1):14-21.)
[20]胡聿贤.地震工程学[M].北京:地震出版社,1988:92-94.(Hu Yuxian.Earthquake Engineering[M].Beijing:Earthquake Press,1988:92-94.)
[2]Miranda E,Bertero V V.Evaluation of strength re-duction factors for earthquake-resistant design[J].Earthquake Spectra,1994,10:357-379.
[3]Fajfar P,Gaspersis P.The N2Method:the seismic damage analysis of RC buildings[J].Earthquake En-gineering and Structural Dynamics,1996,25:31-46.
[4]Ghosh S K.Seismic Detailing of Reinforced Concrete Structures and Performance-Based Codes[J].Seis-mic Design Methodologies for the Next Generation of Codes,1997,12:18-26.
[5]Chopra A K,Goel B K.Capacity-demand-diagram methods for estimating seismic deformation of inelas-tic structures.SDOF Systems[D].University of Cal-ifornia at Berkeley:Pacific Earthquake Engineering Research Center,1999.
[6]王威,孙景江.基于改进能力谱方法的位移反应估计[J].地震工程与工程振动,2003,23(6):37-43.(Wang Wei,Sun Jingjiang.The assessment of dis-placement reaction based on improved capacity spec-trum method[J].Earthquake Engineering and Engi-neering Vibration,2003,23(6):37-43.)
[7]FEMA356Library.Prestandard and commentary for the seismic rehabilitation of buildings[M].Washing-ton DC:Federal Emergency Management Agency,2000.
[8]王丰.基于性能的结构多维抗震设计方法研究[D].大连:大连理工大学水利土木学院,2006.(Wang Feng.The structure of multi-dimensional per-formance-based seismic design method[D].Dalian:School of Civil Engineering Water Resources,Dalian University of Technology,2006)
[9]中华人民共和国建设部.GB50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.(Ministry of Construction of The People's Republic of China GB50011-2001Code of Seismic Design of Buildings[S].Beijing:China Building Industry Press,2001.)
[10]张弢.钢筋混凝土空心剪力墙刚度退化试验研究及框-剪结构中应用方法分析[D].西安:西安建筑科技大学,2004.(Zhang Tao.Stiffness degradation of reinforced con-crete shear wall hollow pilot study and frame-shear wall structure application[D].Xi'an:Xi'an University of Architecture and Technology,2004.)
[11]冯世平,翁义军,沈聚敏.周期反复荷载下钢筋混凝土框架的试验研究和理论分析[R].北京:清华大学结构工程研究所科学研究报告,1985.(Feng Shiping,Weng Yijun,Shen Jumin.Cyclic loading of reinforced concrete framework of experi-mental research and theoretical analysis[R].Bei-jing:Tsinghua University,Institute of Structural En-gineering Research Report,1985.)
[12]Soden Zhi Bessho,Yasaka Atsuhiko,island Nim Fu,et al.Two-layer group and a cross-reinforced con-crete structural framework experimental analysis[C].Tokyo:Japanese Architecture Outline of the Academic,1974.
[13]李少泉,沙镇平.高层框架-抗震墙结构在地震作用下内力重分布的近似计算[J].土木工程学报,2005,38(2):32-38.(Li Shaoquan,Sha Zhenping.High-rise frame-shear wall structure under the action of internal forces in the earthquake re-distribution of approximate calcula-tion[J].Civil Engineering Journal,2005,38(2):32-38.)
[14]Compartin C D.Seismic evaluation and retrofit of concrete buildings:a practical overview of the ATC-40document[J].Earthquake Spectrum,2000(16):241-260.
[15]Saiidi M,Sozen M A.Simple nonlinear seismic anal-ysis of RC struclures[J].Journal of Structural Divi-sion(ASCE),1981,107:937-952.
[16]Peter F.A nonlinear analysis method for perform-ance-based seismic design[J].Earthquake Spec-trum,1999(16):573-592.
[17]Li Hyuang Lee,Sang Whan Han.Determination of ductility factor considering different hysteretic mod-els[J].Earthquake Engineering and Structural Dy-namics,1999,28(9):957-997.
[18]李宏男,何浩祥.利用能力谱法对结构地震损伤评估简化方法[J].大连理工大学学报,2004,44(2):267-270.(Li Hongnan,He Haoxiang.The use of capacity spectrum method for seismic damage assessment simplified method[J].Journal of Dalian University of Technology,2004,44(2):267-270.)
[19]吴波,李惠,李玉华.结构损伤分析的力学方法[J].地震工程与工程振动,1997,17(1):14-21.(Wu Bo,Li Hui,Li Yuhua.The analysis of structural damage mechanics[J].Earthquake Engineering and Engineering Vibration,1997,17(1):14-21.)
[20]胡聿贤.地震工程学[M].北京:地震出版社,1988:92-94.(Hu Yuxian.Earthquake Engineering[M].Beijing:Earthquake Press,1988:92-94.)
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