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| 纤维布混杂形式对混凝土界面力学性能的影响 | |
| 引用本文： | 郭永昌,李丽娟,黄培彦.纤维布混杂形式对混凝土界面力学性能的影响[J].混凝土,2007(5):12-14. |
| 作者姓名： | 郭永昌 李丽娟 黄培彦 |
| 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. 广东工业大学,建设学院,广东,广州,510006 3. 华南理工大学,交通学院,广东,广州,510641 |
| 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 , 广东省建设厅资助项目 |
| 摘 要： | 针对CFS-GFS混杂加固钢筋混凝土梁的一种新型加固方法,通过建立不同材料本构方程,对8种不同加固模型做了非线性界面有限元数值计算.分析了不同加固形式下界面端部剪应力与正应力的分布规律,结果表明界面剪应力与正应力极大值均出现在加固界面端部,且在较短的距离内迅速减小.CFS-GFS混杂加固可以有效降低界面剥离应力,通过控制GFS在加固中所占比例,能够在保证承载力足够的情况下,改善加固界面力学性能,避免端部处发生界面或保护层剥离破坏现象. |
| 关 键 词： | 钢筋混凝土梁 混杂纤维布 非线性有限元 界面性能 纤维布 混凝土 界面力学性能 影响 sheet fiber style hybrid interface concrete performances mechanical 破坏现象 层剥离 保护 发生 改善 情况 承载力 比例 |
| 文章编号： | 1002-3550-（2007）05-0012-03 |
| 修稿时间： | 2007-01-29 |
Inflection on mechanical performances of concrete interface by hybrid style of fiber sheet |
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| GUO Yong-chang,LI Li-juan,HUANG Pei-yan.Inflection on mechanical performances of concrete interface by hybrid style of fiber sheet[J].Concrete,2007(5):12-14. | |
| Authors: | GUO Yong-chang LI Li-juan HUANG Pei-yan |
| Affiliation: | 1. Faculty of Construction Engineering, Guangdong University of Technology, Guangzhou 510006, China; 2. College of Traffic and Communications, South China University of Technology, Guangzhou 510641, China |
| Abstract: | The interfacial mechanics characteristics of reinforced concrete beams strengthed with carbon-glass fiber sheet is discussed,which is a new hybrid strengthening method.By establishing the constitutive equations of different material,the ehght types different interfacial modes of different strengthening style are calculated by nonlinear finite element method.Distributing laws of shear stress and normal stress of different strengthening mode are analysed at near the interface end.The results show that maximum of shear and normal stress be at interfacial end and rapidly minish within a quite distance.CFS-GFS hybrid strengthening mode can efficiently depress interfacial stress,meliorate interfacial mechanics characteristics and avoid sheet end interfacial debonding failure and concrete cover separation failure by controlling GFS proportion in the process of strengthening reinforced concrete beam. |
| Keywords: | reinforced concrete beam hybrid fiber sheet nonlinear FEM interfacial performance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |