| 预应力CFRP增强RC梁的纤维容许张拉预应力值 |
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| 引用本文： | 郭馨艳;黄培彦;郑小红.预应力CFRP增强RC梁的纤维容许张拉预应力值[J].华南理工大学学报(自然科学版),2009,37(6). |
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| 作者姓名： | 郭馨艳;黄培彦;郑小红 |
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| 作者单位： | 华南理工大学,土木与交通学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目，广东省自然科学基金资助项目 |
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| 摘 要： | 将预应力CFRP片材粘贴到需要补强的RC梁，可以有效地改善结构的力学性能，提高加固效率。但是，CFRP片材的张拉预应力值并不是越大越好，本文从三个方面出发考虑了预应力CFRP增强RC梁的容许张拉预应力值，避免了张拉预应力值过高产生的混凝土拉裂缝产生、混凝土与CFRP之间界面剥离和CFRP先于钢筋破坏这种不利破坏模式的发生。本文为预应力CFRP 在增强加固工程中的应用提供理论基础。
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| 关 键 词： | 加固 CFRP 预应力 容许张拉值 |
| 收稿时间： | 2008-7-24 |
| 修稿时间： | 2008-11-11 |
Permissible tensional prestress value of RC beams strengthened with prestressed CFRP |
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| Huang Pei-yan.Permissible tensional prestress value of RC beams strengthened with prestressed CFRP[J].Journal of South China University of Technology(Natural Science Edition),2009,37(6). |
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| Authors: | Huang Pei-yan |
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| Abstract: | Bonding prestressed CFRP plate to strengthen and repair civil engineering structures can improve force condition and improve the progress effectively. But it is not good with high prestress level. This paper consider permissible tensional prestress value from three aspects to avoid tensile crack on concrete、interface bonding between concrete and CFRP and disadvantage failure mode of CFRP broke before steel yield. This paper will provide theory basis on prestressed CFRP used in the field of strengthen engineering. |
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| Keywords: | strengthened CFRP prestressed permissible tensional force |
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