【摘要】 近年来,许多研究者进行了地震中受损的混凝土框架梁-柱节点的修复和加固研究,提出了包括碳纤维、外包钢套、玄武岩、钢铰线-聚合物砂浆以及水泥基灌浆料加大截面等多种修复加固方法。本文对以上几种加固方法的特点,试验试件特征和试验步骤,震损程度以及试验结果进行了综述,比较分析了几种不同方法修复后受损节点的承载力和部分抗震性能指标。结果表明,通过适当的加固处理,受损构件完全有可能达到甚至是超过受损前的承载力和抗震性能。更多还原

【Abstract】 In recent years,a number of researchers concentrated on the rehabilitation and strengthening of RC column-beam joints damaged by earthquake.Several methods,such as carbon fiber-reinforced polymer sheet,basalt fiber-reinforced polymer sheet,enveloped steel,composite cover of high strength wire mesh and polymer mortar and enlarging section with new concrete material are presented.A comprehensive survey is made in this paper concerning with the characteristics of mentioned methods,the layout of the specimens,the process of test,the level of seismic damage and the test data.The effects of the different methods on the strength and seismic performance of the repaired specimens are compared.Through comparison,the validation of rehabilitation and strengthening methods is verified,which means the mechanical properties of the damaged joints,once treated by an appropriate way,can recover or even exceed the original strength and seismic performance.更多还原