框架节点梁柱端部碳纤维布加固的受力分析和设计方法研究  

Mechanical Analysis and Design Method Study on CFRP Sheets Strengthening Beam-column Connections of RC Frames

作　　者：江卫国[1] 陈忠范[1] 程文瀼[1] 王国炎[1] 

机构地区：[1]东南大学,江苏南京210096

出　　处：《施工技术》2007年第5期7-12,共6页Construction Technology

摘　　要：针对各种原因造成的与钢筋混凝土节点(柱脚)相连的梁或柱抗弯性能不足,设计了一种用碳纤维布提高梁柱抗弯能力的加固方法,并用试验进行了验证。本文用ANSYS有限元程序建立了梁柱端部用碳纤维布加固的钢筋混凝土框架中部梁-柱-节点试件的三维有限元模型,用弹簧单元模拟胶层的粘结滑移,分析了应力在混凝土、碳纤维布和铝角钢之间的传递和发展过程。在与试验结果的对比分析和对有关参数的有限元分析基础上,提出了该加固技术的设计方法。Aimed at insufficient bent capacity of beam-column connections（bottom of columns） of RC frames by various reasons, a strengthening method for increasing the bent capacity of those members was proposed and verified by tests. 3D finite element models of middle beam-column joints of RC frame strengthened in the beam-column connections with CFRP sheets were created by ANSYS program. The bonded FRP/concrete or FRP/aluminum connection was simulated by spring systems, and the transferring and developing process of stress in the strengthened beam-column joints were analyzed. Based on the comparison between the test and analysis results and the finite element analysis on correlative parameters, the design method for the strengthening technique is presented .

关 键 词：加固 碳纤维布 粘结滑移 有限元方法 

分 类 号：TU746.3[建筑科学—建筑技术科学]