中文摘要：

采用Clough双线性恢复力模型作为双壁空心管柱塑性铰区弯矩-转角关系恢复力模型。推导了骨架线上两个控制点即屈服点和极限点的弯矩、转角计算式。基于建立的弯矩-转角恢复力模型，计算了9个双壁空心管柱试件截面的屈服弯矩和极限弯矩以及水平力加载位置的屈服水平位移、极限水平位移和水平力-位移滞回曲线，计算结果与试验结果符合较好。

英文摘要：

Clough＇s bilinear hysteretic model is adopted to be the hysteretic model of the moment-rotation relationship of plastic-hinge zone of FRP-concrete-steel double-skin tubular columns （DSTCs）. Formulas of calculating moment and rotation at two control points of the skeleton curve, which are the yield point and the ultimate point, are derived. Based on the developed hysteretic model, the yield moment and the ultimate moment of the cross section, the yield displacement and the ultimate displacement at the lateral loading point, and the lateral force-displacement hysteretic curves of nine DSTC specimens are calculated. The calculate results agree well with the test results.