| CFRP加固混凝土梁微观界面性能分析 |
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| 引用本文： | 廖原,郭永昌,莫晓东. CFRP加固混凝土梁微观界面性能分析[J]. 混凝土, 2008, 0(5): 8-10 |
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| 作者姓名： | 廖原 郭永昌 莫晓东 |
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| 作者单位： | 广州大学,土木工程学院,广东,广州,510006;广东工业大学,建设学院,广东,广州,510006 |
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| 基金项目： | 广东省科技攻关计划 , 广东工业大学校科研和教改项目 |
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| 摘 要： | 通过对CFRP加固混凝土梁建立宏、微观有限元界面分析模型,分析了界面端部附近砂浆、胶层及碳纤维布材料在不同载荷下关键应力的分布情况.结果表明在界面端部附近砂浆容易出现裂纹,随着载荷的增大,最终可能产生混凝土剥离破坏.而在界面端部附近胶层剪应力与正应力出现极大值,在该处容易发生面内剥离破坏.
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| 关 键 词： | CFRP 界面性能 微观模型 |
| 文章编号： | 1002-3550(2008)05-0008-03 |
| 修稿时间： | 2007-12-18 |
Mesoscopic analysis on interface properties of concrete beam strengthened with CFRP |
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| LIAO Yuan,GUO Yong-chang,MO Xiao-dong. Mesoscopic analysis on interface properties of concrete beam strengthened with CFRP[J]. Concrete, 2008, 0(5): 8-10 |
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| Authors: | LIAO Yuan GUO Yong-chang MO Xiao-dong |
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| Affiliation: | LIAO Yuan1,GUO Yong-chang 2,MO Xiao-dong 2(1.College of Civil Engineering,Guangzhou University,Guangzhou 510006,China,2.Faculty of Construction Engineering,Guangdong University of Technology,China) |
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| Abstract: | Through analysis on the macro-mesoscopic finite element model of RC-beam strengthened with CFRP,presents the distribution of key stresses of mortar matrix,adhesive layer and CFRP around the end of interface under different load.The results show that around the end of interface,mortar matrix is incline to crazing,the crack will develop as the load increasing,and probably lead to concrete debonding in the end.Otherwise,the maximum shear and normal stresses of the adhesive layer appear on the end of the interf... |
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| Keywords: | Carbon Frber Reinforced Polymer(CFRP) interface property mesoscopic modeling |
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