中文摘要：

提出了钢管混凝土边框内藏钢桁架混凝土组合核心筒，为了解其抗震性能，进行了1个钢管混凝土边框混凝土组合核心筒和1个钢管混凝土边框内藏钢桁架混凝土组合核心简的低周反复荷载试验研究，2个试验模型为1／6缩尺。在试验基础上，分析比较了2个核心筒的承载力、延性、滞回特性、耗能能力、刚度衰减过程和破坏特征，分析结果表明：钢管混凝土边框内藏钢桁架混凝土组合核心筒抗震性能较好。在试验研究基础上，建立了钢管混凝土边框内藏钢桁架混凝土组合核心筒承载力简化力学计算模型与公式，计算结果与试验结果吻合较好。

英文摘要：

A new type of RC core walls with concrete filled steel tube （CFT） columns and concealed steel trusses was proposed in this paper. In order to evaluate its seismic performance, two specimens of 1/6 scale core walls, one with CFT-columns and the other with CFT-columns and concealed steel trusses, were tested under the cyclic loading. Based on experiment results, the load-carrying capacity, ductility, hysteretic characteristics, energy dissipation capacity, stiffness degradation and damage characteristics of the two specimens were compared and analyzed. It showed that the seismic performance of core walls with CFT-columns and concealed steel trusses was better than that with CFT-columns only. The mechanical model of the load-carrying capacity of this new composite core walls was established upon the experiment. The calculated results were in good agreement with those from the experiment.