Among the retrofitted specimens, the steel jacketed specimens exhibit not only greatly enhanced load carry capacity but also excellent ductility performance.

• 实验结果亦显示，钢板与碳纤之矩形包覆补强效果较不理想，但八边形钢板包覆补强试体于提升柱轴向强度与韧性上均有优良的表现。