| 混凝土结构加固中植筋深度的试验研究 |
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| 引用本文： | 朱彦鹏,刘辉,王秀丽,郑建军.混凝土结构加固中植筋深度的试验研究[J].兰州理工大学学报,2005,31(5):106-110. |
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| 作者姓名： | 朱彦鹏 刘辉 王秀丽 郑建军 |
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| 作者单位： | [1]兰州理工大学土木工程学院,甘肃兰州730050 [2]甘肃土木工程研究院,甘肃兰州730030 |
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| 基金项目： | 甘肃省科技攻关项目（ZS011-A50-013-G） |
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| 摘 要： | 通过在混凝土中植筋的拉拔试验，研究了不同条件下植筋的破坏形态，分析了混凝土强度、钢筋直径和植筋的强度等级对植筋深度的影响，给出了粘结破坏、锥形破坏、钢筋屈服和应力传递破坏等4种破坏形态的计算模型，推导出了相应的植筋深度计算公式，并通过多组试验证明了计算公式的正确性并给出了避免粘结破坏和锥形破坏的植筋深度计算公式．
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| 关 键 词： | 植筋深度 拉拔试验 破坏形态 计算公式 植筋强度 |
| 文章编号： | 1000-5889(2005)05-0106-05 |
| 收稿时间： | 2004-07-06 |
| 修稿时间： | 2004年7月6日 |
Experimental investigation of deeply embedded steel bars in concrete construction |
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| ZHU Yan-peng, LIU Hui, WANG Xiu-li, ZHENG Jian-jun.Experimental investigation of deeply embedded steel bars in concrete construction[J].Journal of Lanzhou University of Technology,2005,31(5):106-110. |
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| Authors: | ZHU Yan-peng LIU Hui WANG Xiu-li ZHENG Jian-jun |
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| Institution: | 1. College of Civil Engineering, Lanzhou Univ. of Teeh. , Lanzhou 730050, China; 2. Gansu Institute of Civil Engineering, Lanzhou 730030, China |
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| Abstract: | Through the pulling experiment on embedded steel bars in concrete, the damage forms of embedded steel bars are investigated. The influence of the strength of embedded steel bars, concrete strength and diameter of steel bar on the depth of embedded bars is analyzed. According to the analysis of the experiment result,four damage forms of the cohesion, conical contour, steel bar yielding and stress transmit of embedded steel bars are given, and their corresponding evaluation models and formulae for embedding depth are derived. The formula is proved to be valid by means of pulling experiment on embedded steel bars,and the depth formula of embedded steel bars for avoiding the damage forms of cohesion and conical contour is given. |
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| Keywords: | depth of embedded steel bars pulling experiment damage form calculation formula strength of embedded bars |
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