（1 同济大学, 上海 200092; 2 南阳师范学院，南阳 473000）

［摘要］以1∶4缩尺的6层再生混凝土空间框架结构模型为研究对象，完成了再生混凝土框架结构试验模型的振动台试验。基于再生混凝土框架结构动力试验，分析了随着台面输入地震波加速度幅值的不断增大再生混凝土框架结构滞回曲线的变化规律以及模型抗侧移刚度的退化规律，评估了输入不同地震波时结构的耗能。通过对试验模型结构整体和各层间滞回曲线分析，提出再生混凝土框架结构整体和层间能力曲线函数模型；通过能力曲线函数模型，对再生混凝土框架结构的位移延性进行评估；基于有限元数值模拟方法，比较分析了再生混凝土框架结构和普通混凝土框架的滞回特性。分析表明，再生混凝土框架结构性能与普通混凝土结构的近似，具有良好的耗能能力、位移延性和变形能力。该研究为再生混凝土结构的抗震优化设计，以及为再生混凝土制品的推广和应用提供了技术支持和理论依据。

［关键词］再生混凝土框架结构; 振动台试验; 滞回性能; 刚度退化; 位移延性

中图分类号：TU528-79，TU317-1文献标识码：A文章编号：1002-848X(2016)15-0019-08

Study on hysteretic behavior of recycled aggregate concrete frame structure

Wang Changqing 1, 2， Xiao Jianzhuang 1

(1 Tongji University, Shanghai 200092, China; 2 Nanyang Normal University, Nanyang 473000, China)

Abstract:The first 1/4 scaled six-story recycled aggregate concrete (RAC) spatial frame structure model  was taken as the research object. Shaking table tests on the RAC frame  structure was completed. Based on the RAC frame structure dynamic tests, changing law of the hysteretic curve as well as the lateral stiffness degradation rule for the RAC frame structure with continually increasing acceleration amplitude of the input table earthquake waves was analyzed, and the energy dissipation capacity under the input seismic waves was also assessed. Through the analysis on hysteresis loops of the overall structure and the inter-storey as well, the capacity curve function models were proposed. The displacement ductility of the RAC frame structure was evaluated according to the proposed capacity curve models. Based on the finite element numerical simulation method, a comparative analysis involving the hysteretic characteristics of RAC frame structure and natural aggregate concrete (NAC) frame structure was conducted. The analysis shows that the structural behaviors of RAC frame are similar to NAC frame structure and in good in the energy dissipation capacity, the displacement ductility and the deformability. The study provides technical support and theoretical basis for the seismic optimization design of RAC structures, as well as the promotion and application of RAC products.

Keywords:recycled aggregate concrete (RAC) frame structure; shaking table test; hysteretic behavior; stiffness degradation; displacement ductility

*中国博士后科学基金 (2014M550247, 2015T80449)，河南省省重点科技攻关项目 (152102310027)，河南省教育厅科学技术研究重点项目(14B560033)，高层次人才科研启动费资助项目(ZX2013016)。

作者简介: 王长青, 博士, Email:changqingwang@tongji.edu.cn。