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根据能力谱方法的基本原理 ,建立了在用RC框架结构基于位移抗震性能的评估方法。该方法采用了振型分解法建立的多自由度体系和等效单自由度体系之间的转换关系 ,以及由现行《建筑抗震设计规范》的反应谱曲线建立的结构抗震要求曲线。用本文方法对清华大学主楼 1 0层钢筋混凝土框架结构进行了抗震性能评估 ,同时进行了小震和大震作用下的弹塑性时程分析。本文方法得到的顶点位移角、层间位移角和塑性铰分布与时程分析的结果比较符合
According to the basic principle of capability spectrum method, an evaluation method based on displacement seismic behavior of RC frame structure is established. This method uses the conversion relationship between the multi-degrees-of-freedom system modeled by mode decomposition and the equivalent one-degree-of-freedom system and the structural seismic response curve established by the response spectrum curve of the current Code for Design of Seismic Design of Buildings. The seismic performance of 10-story reinforced concrete frame structure of Tsinghua University’s main building was evaluated by this method and the elasto-plastic time-history analysis was carried out under the action of small earthquakes and large earthquakes. The results obtained by this method are in good agreement with the results of time history analysis for the peak displacement angle, interlayer displacement angle and plastic hinge distribution