基于Park-Ang模型的框架结构地震损伤性能评估
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摘要
借鉴Pushover分析和混凝土构件损伤评估的基本思想对结构进行性能评估。通过能力谱方法,得出罕遇地震作用下结构的层间位移,采用Park-Ang模型计算结构各层的损伤指标,并结合非线性静力分析的结构构件塑性铰的发展、分布情况对结构的性能水平进行评估。本文方法利用结构滞回耗能与结构最大位移的关系求解结构的滞回耗能,极大地提高了计算效率,具有广阔的工程应用前景。
Based on the nonlinear static(Pushover) analysis method and random vibration theory,the frame structure is analyzed in this paper.The capacity spectrum method of performance evaluation can compute the displacement and damnification in each floor under the rare earthquake.The Park-Ang model is applied to estimate the damage index of structures under seismic action and combined with the nonlinear static analysis method,the seismic performances of structures are evaluated synthetically.The method developed can simultaneously consider the effects of the maximum deformation and the hysteretic energy,so it can be widely used in engineerings.
Based on the nonlinear static(Pushover) analysis method and random vibration theory,the frame structure is analyzed in this paper.The capacity spectrum method of performance evaluation can compute the displacement and damnification in each floor under the rare earthquake.The Park-Ang model is applied to estimate the damage index of structures under seismic action and combined with the nonlinear static analysis method,the seismic performances of structures are evaluated synthetically.The method developed can simultaneously consider the effects of the maximum deformation and the hysteretic energy,so it can be widely used in engineerings.
引文
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[2]汪大绥,贺军利,张凤新.静力弹塑性分析(PushoverAnalysis)的基本原理和计算实例[J].世界地震工程,2004,20(1):45～53Wang Da-sui,He Jun-li,Zhang Feng-xin.The basicprinciple and a case study of the static elastoplasticanalysis(pushover analysis)[J].World EarthquakeEngineering.2004,20(1):45～53(in Chinese)
[3]Cosenza E,Manfredi G,Ramasco K.An evaluation ofthe use of damage functional in earthquake-resistantdesign[A].Proc.9th Eur.Conf EarthquakeEngineering[C].Moscow,1990,9:303～312
[4]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):44～54Niu Di-tao,Ren Li-jie.A modified seismic damagemodel with double variables for reinforced concretestructures[J].Earthquake Engineering And EngineeringVibration,1996,16(4):44～54(in Chinese)
[5]胡聿贤.地震工程学[M].北京:地震出版杜,1988Hu Yu-xian.Earthquake Engineering[M].Beijing:Earthquake Press,1988(in Chinese)
[6]姚谦峰,苏三庆.地震工程[M].西安:陕西科学技术出版社,2001Yiao Qian-feng,Su San-qing.Earthquake Engineering[M].Xian:Shaanxi Science and Technique Press,2001(in Chinese)
[7]沈聚敏,周锡元,高小旺等.抗震工程学[M].北京:中国建筑工业出版社,2000Shen Ju-min,Zhou Xi-yuan,Gao Xiao-wang.EarthquakeEngineering[M].Beijing:China Building Industry Press,2000(in Chinese)
[8]肖明葵,白绍良.基于滞回耗能的抗震结构最大位移反应[J].重庆大学学报,2003,26(3):133～137Xiao Ming-kui,Bai Shao-liang.Maximum DisplacementEstimation of Seismic Structures Based on HysteresisEnergy[J].Journal of Chongqing University,2003,26(3):133～137(in Chinese)
[9]Ye L P,Shunsuke OtanI.Maximum seismic displacementof inelastic system based on energy concept[J].Earthquake Engineering&Structural Dynamics,1999,28:1483～1499
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