| 600 MPa高强钢筋与混凝土的粘结锚固性能试验研究 |
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| 引用本文： | 李艳艳,李晓清,苏恒博.600 MPa高强钢筋与混凝土的粘结锚固性能试验研究[J].土木建筑与环境工程,2017,39(2):19-25. |
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| 作者姓名： | 李艳艳 李晓清 苏恒博 |
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| 作者单位： | 1. 河北工业大学土木与交通学院,天津300401;河北省土木工程技术研究中心,天津300401;2. 河北工业大学土木与交通学院,天津,300401 |
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| 基金项目： | 河北省自然科学基金，天津市建委科技项目(2016-8)Natural Science Foundation of Hebei Province，Science and Technology Research Project of Tianjin Construction |
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| 摘 要： | 为研究600MPa高强钢筋与混凝土粘结锚固性能,设计了72个棱柱体试件进行拉拔试验,对600MPa高强钢筋粘结锚固的破坏形态及粘结应力分布进行分析,通过建立基本粘结滑移关系及位置函数,确定600MPa高强钢筋在混凝土结构中的粘结滑移本构关系。采用一次二阶矩法进行可靠度分析,提出锚固长度设计建议。研究表明:600 MPa高强钢筋粘结锚固的破坏形态及粘结应力分布与普通钢筋类似且粘结锚固性能良好,《混凝土结构设计规范》(GB 50010—2010)基本锚固长度计算公式依然适用于600 MPa高强钢筋。
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| 关 键 词： | 高强钢筋 粘结性能 本构关系 锚固长度 |
| 收稿时间： | 2016/5/4 0:00:00 |
Experimental analysis of bond-anchorage properties between 600 MPa high strength reinforcement and concrete |
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| Li Yanyan,Li Xiaoqing and Su Hengbo.Experimental analysis of bond-anchorage properties between 600 MPa high strength reinforcement and concrete[J].土木建筑与环境工程,2017,39(2):19-25. |
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| Authors: | Li Yanyan Li Xiaoqing and Su Hengbo |
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| Affiliation: | School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, P. R. China;Civil Engineering Technology Research Center of Hebei Province, Tianjin 300401, P. R. China,School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, P. R. China and School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, P. R. China |
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| Abstract: | Pull-out tests were carried out on 72 concrete specimens reinforced with 600 MPa high strength reinforcement to investigate the bond-anchorage properties between 600 MPa high strength reinforcement and concrete.Failure pattern and bond stress distribution of specimens were studied,respectively.The bond-slip constitutive relations of 600 MPa high strength reinforcement were established through basic form of bond-slip and position function.Through establishing the calculation formula of ultimate bonding strength for 600 MPa high strength reinforcement,bond-anchorage length was established via reliability analysis of JC.The results showed that the failure pattern,bond stress distribution between 600 MPa high strength reinforcement and other strength reinforced bars no obvious difference.Basic anchorage length formula of GB50010-2010 still can be applied to 600 MPa high strength reinforcement. |
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| Keywords: | high strength reinforcement bond properties constitutive relations anchorage length |
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