| 钢筋表面特征对配筋RPC粘结性能的影响研究 |
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| 引用本文： | 安明喆,余自若,贾方方,张盟.钢筋表面特征对配筋RPC粘结性能的影响研究[J].低温建筑技术,2010,32(2):13-15. |
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| 作者姓名： | 安明喆 余自若 贾方方 张盟 |
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| 作者单位： | 1. 北京交通大学土建学院,北京,100044
2. 中国航天第一研究院,北京,100076 |
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| 摘 要： | 通过对钢筋中心拔出试验结果的比较,研究了钢筋表面特征对活性粉末混凝土钢筋粘结性能的影响。研究表明:相同直径和埋长条件下变形钢筋在滑移量大于0.05mm后粘结应力快速提高,两类钢筋的粘结应力滑移曲线分别在0.50mm和0.35mm时趋于平缓;同直径条件下钢筋的平均极限粘结应力τu均随钢筋粘结长度的增加而降低,且变形钢筋的降幅大于光圆钢筋;两类钢筋锚固长度均随钢筋直径的增加而增大,但是变形钢筋的锚固长度较之光圆钢筋小很多,只有光圆钢筋的0.36倍。
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| 关 键 词： | 活性粉末混凝土 钢筋类型 粘结性能 锚固长度 |
STUDY ON THE EFFECT OF STEEL TYPE TO THE BOND PERFORMANCE OF STEEL REINFORCED RPC |
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| AN Ming-zhe,YU Zi-ruo,JIA Fang-fang,ZHANG Meng.STUDY ON THE EFFECT OF STEEL TYPE TO THE BOND PERFORMANCE OF STEEL REINFORCED RPC[J].Low Temperature Architecture Technology,2010,32(2):13-15. |
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| Authors: | AN Ming-zhe YU Zi-ruo JIA Fang-fang ZHANG Meng |
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| Affiliation: | 1.School of Civil Engineering;Beijing Jiaotong University;Beijing 100044;China;2.China Space 1st Research Institute;Beijing 100076;China |
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| Abstract: | This paper aims to clarify the effect of steel reinforcement surface characteristics on the bond performance of Reactive Powder Concrete through the results of pull-out test. It is concluded that, with the same diameter and bond length, stress-slip curve of deformed bar tends to be gently when s = 0.50mm while the round steel bar is s = 0.35mm. The mean ultimate bond stress τu decreased with the increase of bond length in case of the same diameter, but the range of deformed steel bar is larger than that of the round steel bar. The anchorage length increased with the increase of the diameter, but deformed bar is much lower, only 0.36 times of round bar. |
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| Keywords: | Reactive Powder Concrete steel type bond performance anchorage length |
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