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| CFS/GFS混杂加固钢筋混凝土梁界面应力数值分析 | |
| 引用本文： | 郭永昌,黄培彦,李丽娟,刘锋.CFS/GFS混杂加固钢筋混凝土梁界面应力数值分析[J].铁道科学与工程学报,2007,4(2):54-58. |
| 作者姓名： | 郭永昌 黄培彦 李丽娟 刘锋 |
| 作者单位： | 1. 广东工业大学,建设学院,广东,广州,510006;华南理工大学,交通学院,广东,广州,510641 2. 华南理工大学,交通学院,广东,广州,510641 3. 广东工业大学,建设学院,广东,广州,510006 |
| 基金项目： | 国家自然科学基金 , 广东省教育厅千百十工程优秀人才培养基金 , 华南理工大学校科研和教改项目 |
| 摘 要： | 为了模拟混杂纤维布末端剥离破坏过程,建立CFS/GFS混杂加固梁界面有限元模型,与双层CFS加固梁数值分析结果进行对比研究,对不同长度的混杂纤维布加固模型进行计算。结果表明:混杂加固可以有效地控制纤维布末端界面剪应力,而且界面正应力也有所降低,混杂加固方式具有优良的界面混杂效应;随着纤维布有效粘贴长度的减小,胶层端部界面剪应力与正应力成比例增加,增加比例随距离的增加,呈递减趋势。 |
| 关 键 词： | 界面应力 混杂加固 剥离破坏 非线性有限元 |
| 文章编号： | 1672-7029（2007）02-0054-06 |
| 修稿时间： | 2006-12-13 |
Finite element analysis of interface stress of RC beams strengthened with CFS/GFS |
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| GUO Yong-chang,HUANG Pei-yan,LI Li-juan,LIU Feng.Finite element analysis of interface stress of RC beams strengthened with CFS/GFS[J].Journal of Railway Science and Engineering,2007,4(2):54-58. | |
| Authors: | GUO Yong-chang HUANG Pei-yan LI Li-juan LIU Feng |
| Institution: | 1.Faculty of Construction Engineering, Guangdong University of Technology, Guangzhou 510006, China, 2. College of Traffic and Communications, South China University of Teehnology, Guangzhou 510641, China |
| Abstract: | In order to simulate the entire debonding process, aimed at the simulation of the entire debonding process,mechanical performance of the concrete-to-FRP interface was investigated by the nonlinear FE analysis.Based on above analysis,the interfacial stress levels of CFS-GFS and CFS-CFS were compared.The FE models of RC beam with different lengths of hybrid FRP sheet were investigated.The results show that it is an effective method for hybrid strengthened with CFS-GFS,which can efficiently control interfacial shear stress of FRP meanwhile prevent interfacial normal stress at high stress level.Interfacial shear stress and normal stress of adhesive increase with the increase of shorting length of CFS-GFS. |
| Keywords: | interfacial stress hybrid strengthening debonding failure nonlinear FE method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |