【摘要】 为了研究注胶加固技术的有效性,采用数种地震波形,对一栋双跨8层混凝土框架缩尺模型(缩比为1:4)进行了模拟多种烈度地震振动台预震损试验,框架模型损坏后采用注胶加同技术修复框架震损裂缝,然后对框架模型进行相同的模拟多种烈度地震振动台试验。比较混凝土框架模型在注胶加固前后的抗震性能,研究了框架模型的自振特性以及在不同地震烈度下的楼层刚度。试验结果显示,经过注胶加固后的混凝土框架模型具有良好的抗震性能,表明注胶加同技术可以有效地修复震损后的混凝土框架结构。更多还原

【Abstract】 In order to investigate the effect of epoxy injection technique,a 1/4 scale two-bay eight-storey RC frame model that had been pre-damaged with the test on the shaking table was tested again on the shaking table after being retrofitted by the epoxy injection technique to study and contrast the seismic performance of the model structure.The dynamic characteristics of the structure and its story lateral stiffness under different earthquake intensities were analyzed. Test and analysis results showed that the RC frame retrofitted by epoxy injection technique was possessed of good earthquake resistance,showing that epoxy injection is an adequate method for retrofitting earthquake-damaged structures.更多还原