混凝土框架节点碳纤维布抗震加固的试验与分析  

Experiment and analysis of RC frame joints strengthened with carbon fiber sheet for increasing seismic capacity

作　　者：冼巧玲[1] 江传良[1] 周福霖[1] 

机构地区：[1]广州大学,广东广州510405

出　　处：《地震工程与工程振动》2007年第2期104-111,共8页Earthquake Engineering and Engineering Dynamics

基　　金：建设部科研攻关项目(02-2-1.24);广州市建设科技发展基金项目(9908)

摘　　要：本文提出了用碳纤维布加固平面框架中间节点和空间框架中间节点的抗震加固新方法,通过5个框架中间节点(其中2个为拟三维节点)的足尺拟静力试验,以及用有限元软件ANSYS进行分析,验证了本文加固方法的有效性。试验与分析结果表明,对平面框架梁柱节点,本文的2种加固方法均能显著改善构件的延性,承载力也有一定的提高;对空间框架梁柱节点,采用碳纤维布与三角钢腋联合加固不但能够大大提高构件延性,而且能够提高节点的屈服强度、极限强度和屈服后刚度,加固效果十分明显。Some new strengthening methods with CFS （ carbon fiber sheet） for increasing the seismic capacity of RC frame joints have been developed. To verify the efficiency of the strengthening methods, five prototype RC frame joints （two of them are pseudo-space joints） have been tested under the low frequency reversed load and analyzed with the ANSYS finite element analysis software. The test and analysis results show that by the strengthening way of this paper the ductility of the plane joints may be notably improved and the ultimate strength may be increased, and for the space joints not only the ductility may be highly improved but also the yield strength, the ultimate strength and the stiffness after yielding may be increased by combining the CFS with the small steel frame.

关 键 词：混凝土框架 梁柱节点 碳纤维布 抗震加固 ANSYS分析 

分 类 号：P315.958[天文地球—地震学] P315.97[天文地球—固体地球物理学]