| 富含砖粒再生混凝土与钢筋黏结滑移性能研究 |
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| 引用本文： | 安新正,牛薇,张亚飞,马晓楠. 富含砖粒再生混凝土与钢筋黏结滑移性能研究[J]. 河北工程大学学报(自然科学版), 2019, 36(1): 26-31 |
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| 作者姓名： | 安新正 牛薇 张亚飞 马晓楠 |
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| 作者单位： | 河北工程大学土木工程学院 |
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| 基金项目： | 河北省自然科学基金资助项目（E2015204111）；河北省科学技术研究与发展计划资助项目（15273609D） |
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| 摘 要： | 为研究富含砖粒再生混凝土与钢筋间的黏结滑移性能,通过对48个富含砖粒立方体试件进行拔出试验,研究了再生混凝土立方体抗压强度、钢筋类别、钢筋直径等因素对黏结滑移性能的影响规律。结果表明:再生混凝土的强度值越大,单位滑移值对应的载荷值越大,荷载-滑移曲线越陡峭;当混凝土强度和钢筋直径都相同时,变形钢筋(HRB400级钢筋)的黏结应力约为光圆钢筋(HPB300级)的1.55～1.75倍。通过超声检测损伤,提出了考虑损伤参数的再生混凝土与钢筋间的黏结滑移损伤本构模型。
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| 关 键 词： | 富含砖粒再生混凝土 钢筋 拔出试验 超声检测 黏结滑移损伤本构模型 |
| 收稿时间： | 2018-09-21 |
Study on the Bond-slip Properties between Brick-rich Recycled Concrete and Steel Bars |
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| AN Xinzheng,NIU Wei,ZHANG Yafei and MA Xiaonan. Study on the Bond-slip Properties between Brick-rich Recycled Concrete and Steel Bars[J]. Journal of Hebei University of Engineering(Natural Science Edition), 2019, 36(1): 26-31 |
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| Authors: | AN Xinzheng NIU Wei ZHANG Yafei MA Xiaonan |
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| Affiliation: | College of Civil Engineering, Hebei University of Engineering, Hebei Handan, 056038, China,College of Civil Engineering, Hebei University of Engineering, Hebei Handan, 056038, China,College of Civil Engineering, Hebei University of Engineering, Hebei Handan, 056038, China and College of Civil Engineering, Hebei University of Engineering, Hebei Handan, 056038, China |
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| Abstract: | In order to study the bond-slip performance between brick-rich recycled concrete and steel bars, 48 brick-rich cube specimens were tested through pull-out test. The effects of the cube compressive strength of recycled concrete, the shape of steel bar and the reinforcement diameter on the bond performance were studied. The results show the greater the strength value of recycled concrete, the larger the load value corresponding to the unit slip value, and the steeper the load-slip curve; when the strength and the reinforcement diameter are constant, the bonding stress of deformed steel bar (HRB400 grade steel) is about 1.55-1.75 times of Light round bar (HPB300). Lastly, through detecting damage by ultrasound, the bond-slip constitutive model considering damage between recycled concrete and steel bars was proposed. |
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| Keywords: | brick-rich recycled concrete steel pull-out test ultrasonic testing bond-slip damage constitutive model |
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