摘要
基于一榀钢结构植筋加层框架和一榀碳纤维布节点加固的植筋加层框架的1/3缩尺模型进行低周反复荷载试验,对采用无机锚固材料植筋加层后框架的破坏形态、滞回曲线、刚度退化、位移延性和耗能能力等抗震特性进行研究。试验结果表明:高强早强水泥基无机锚固材料在植筋结构上可以很好地满足工程对其力学性能的要求;使用无机锚固材料植筋技术,对既有混凝土框架结构进行钢结构加层后,结构整体抗震性能较好;使用碳纤维布材料对植筋节点进行加固后,加层框架的破坏机制由混合铰破坏转为梁铰破坏,结构的延性、耗能能力等抗震性能的提高较为明显。
The seismic behavior of a steel implanted storey-adding frame and a steel implanted storey-adding frame strengthened with CFRP sheet for 1/3 scale model was investigated under low cycle reversed load. The failure characteristics, hysteresis properties, rigidity degeneracy, displacement ductility and energy dissipation capacity of the two specimens were compared.The test results revealed that the cement based inorganic anchoring material used in structural anchorage had good mechanical properties.The seismic behavior of steel storey-adding frames was favorable.After the steel implanted joint was reinforced by CFRP sheet, the failure mechanism of the storey-adding frame was turned from hybrid hinged failure into beam hinged failure, and the seismic behavior of the structure was significantly improved.
出处
《工业建筑》
CSCD
北大核心
2015年第10期176-182,共7页
Industrial Construction
