恢复力模型研究现状及存在问题

State-of-the-art of restoring force models for RC structures

恢复力模型是根据大量从试验中获得的恢复力与变形的关系曲线经适当抽象和简化而得到的实用数学模型,是结构构件的抗震性能在结构弹塑性地震反应分析中的具体体现。对迄今为止国内外关于钢筋、混凝土和钢筋混凝土结构构件的恢复力模型的研究成果进行了汇总和简要评述,分析了现有恢复力模型存在的主要问题,在此基础上提出恢复力模型今后的研究建议。

The state-of-the-art of the research on restoring force models of RC structures in home and abroad is presented in this paper. Most of the restoring-force models are reviewed,and their advantages and disadvantages are analyzed. For the above-mentioned discussion, the existing problems on the research of the restoring-force models and some suggestions for the future research are pointed out.