| 再生混凝土与锈蚀钢筋界面粘结性能 |
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| 引用本文： | 牛建刚,边钰,谢承斌.再生混凝土与锈蚀钢筋界面粘结性能[J].科学技术与工程,2020,20(19):7845-7851. |
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| 作者姓名： | 牛建刚 边钰 谢承斌 |
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| 作者单位： | 内蒙古科技大学土木工程学院,包头 014010;内蒙古科技大学土木工程学院,包头 014010;内蒙古科技大学土木工程学院,包头 014010 |
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| 基金项目： | 国家自然科学基金资助项目(51368042、51968058) |
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| 摘 要： | 从钢筋锈蚀率、水灰比、钢筋直径及相对保护层厚度等因素对再生混凝土与锈蚀钢筋粘结性能的影响进行分析研究,选取割线抗滑移刚度和界面粘结能量作为粘结性能的退化规律指标并建立其粘结性能退化模型,以期打破现有研究的局限性并为再生混凝土结构的安全使用和耐久性设计提供理论指导,最后结合粘结锚固可靠度分析,发现再生混凝土较普通混凝土的受拉钢筋锚固设计长度可相应缩短。
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| 关 键 词： | 锈蚀钢筋 再生混凝土 界面粘结性能 退化模型 可靠度 |
| 收稿时间： | 2020/1/9 0:00:00 |
| 修稿时间： | 2020/3/24 0:00:00 |
Interfacial bond properties between recycled concrete and corroded steel bar |
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| Niu Jiangang,Bian Yu,Xie Chengbin.Interfacial bond properties between recycled concrete and corroded steel bar[J].Science Technology and Engineering,2020,20(19):7845-7851. |
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| Authors: | Niu Jiangang Bian Yu Xie Chengbin |
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| Institution: | School of Civil Engineering,Inner Mongolia University of Science and Technology |
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| Abstract: | The effects of steel bar corrosion rate, water cement ratio, steel bar diameter and relative cover thickness on the bond properties between recycled concrete and corroded steel bar are analyzed and studied. The anti-slip stiffness and interfacial bond energy of Secant are selected as the degradation indexes of bond properties, and the degradation model of bond properties is established. In order to break the limitations of the existing research and provide theoretical guidance for the safe use and durability design of recycled concrete structures, and point out the shortcomings of the existing research. Finally, combined with the bond Anchorage reliability analysis, it is found that the Anchorage design length of recycled concrete is shorter than that of ordinary concrete. |
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| Keywords: | corroded steel bar recycled concrete interfacial bonding properties degenerate model reliability degree |
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