【摘要】 目的研究依据不同时期《建筑抗震设计规范》建造的混凝土框架结构建筑物抗震能力的差异.方法基于Pushover分析方法,建立依据不同的《建筑抗震设计规范》建造混凝土框架结构三维分析模型,采用SAP2000软件对结构进行分析,根据能力谱法,将Pushover曲线转换为能力谱曲线,将规范中的设计反应谱转换得到弹塑性需求谱,通过能力谱和需求谱的叠加,求出结构的性能点,进而得到结构的顶点位移及塑性铰分布、层间位移角和楼层位移,从而得到框架结构的抗震能力.结果通过一个5层混凝土框架结构教学楼的抗震能力分析,分别得到依据我国1974年、1989年和2001年《建筑抗震设计规范》建造的建筑物能力谱曲线和达到性能点时的塑性铰发展过程.结论依据不同的《建筑抗震设计规范》建造的建筑物抗震能力差异明显,建议在抗震能力评估时,应给予充分考虑.更多还原

【Abstract】 In order to study the difference of the seismic resistant capacity of reinforced concrete frame buildings which are constructed according to the code for seismic design of buildings of China in different periods,the model of the tri-dimensional analysis of reinforced concrete frame building based on the code for seismic design of buildings of China in different periods is set up by using pushover method.By using SAP2000 general software,seismic analysis of reinforced concrete frame building is completed.Pushover curve is converted to capacity spectrum curve based on capacity spectrum method.The designing response spectrum in the code for seismic design of buildings of China is converted to elasticity demand spectrum.The top displacement,floor displacements,inter-story drift angles and distribution of plastic hinges of structure are obtained,and then,seismic resistant capacity of reinforced concrete frame building is obtained.Seismic resistant capacity of a five-storey reinforced concrete frame classroom building is analyzed;capacity spectrum curves and development processes of plastic hinges of reinforced concrete frame building based on the code for seismic design of buildings of China in 1974,1989 and 2001 are obtained respectively.There are obvious differences in the seismic resistant capacities of reinforced concrete frame building based on the code for seismic design of buildings of China in different periods,for this reason,seismic resistant capacity assessment of reinforced concrete frame buildings should consider variant edition of the code for seismic design of buildings of China.更多还原