碳纤维增强复合材料-梁端加腋组合方法加固梁柱节点的受剪性能研究  

SHEAR BEHAVIOR OF BEAM-COLUMN JOINTS UPGRADED BY A COMBINED METHOD OF CFRP SHEETS AND BEAM HAUNCHES

作　　者：王步[1,2] 武贤慧[1] 刘聪聪 Wang Bu Wu Xianhui Liu Congcong(School of Civil Engineering, Chang＇ an University, Xi＇an 710061, China Research Institute of Testing and Retrofitting Engineering Structures, Chang＇ an University, Xi＇ an 710061, China Xinjiang Architectural Design Institute, Urumqi 830000, China)

机构地区：[1]长安大学建筑工程学院,西安710061 [2]长安大学工程结构诊断与改造研究所,西安710061 [3]新疆维吾尔自治区建筑设计研究院,乌鲁木齐830000

出　　处：《工业建筑》2016年第12期174-179,共6页Industrial Construction

基　　金：中央高校基本科研业务费专项资金项目(CHD2010JC043;CHD2011JC190)

摘　　要：基于碳纤维增强复合材料(CFRP)约束的梁端混凝土加腋区,CFRP-梁端加腋组合方法可大幅度扩展节点刚性域范围,适用于受剪性能严重不足的梁柱节点加固。考虑到节点受力的复杂性,在前期试验验证的基础上,采用有限元仿真分析方法以进一步明确加固节点的受剪性能与工作机理,以及不同加固构造对加固效果的影响规律。在此基础上,建立了CFRP-梁端加腋组合方法加固节点的压杆-拉杆受力分析模型。Based on the beam haunches strengthened by carbon fiber-reinforced polymer（CFRP） laminates,beamcolumn joints are enlarged significantly by the combined method of CFRP sheets and beam haunches. The retrofitting method is applicable to the underdesigned RC beam-column joints with a serious shear deficiency. Considering the complex nature of beam-column joints,the finite element（FE） method was used to investigate the shear behavior and mechanism of the strengthened joints. The influence on strengthening effectiveness from different strengthening details was also investigated systematically. According to the shear mechanism revealed by the simulation,the strut-and-tie model of the strengthened beam-column joints was built.

关 键 词：碳纤维增强复合材料 梁柱节点 受剪加固 压杆-拉杆模型 有限元方法 

分 类 号：TU37[建筑科学—结构工程]