| 箍筋对混凝土构件锈胀开裂影响分析 |
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| 引用本文： | 陈月顺,卫军,高宗余,周锡武. 箍筋对混凝土构件锈胀开裂影响分析[J]. 华中科技大学学报(自然科学版), 2007, 35(9): 25-27 |
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| 作者姓名： | 陈月顺 卫军 高宗余 周锡武 |
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| 作者单位： | 华中科技大学,土木工程与力学学院,湖北,武汉,430074;湖北工业大学,土木工程与建筑学院,湖北,武汉,430068;华中科技大学,土木工程与力学学院,湖北,武汉,430074;华中科技大学,土木工程与力学学院,湖北,武汉,430074;中铁大桥勘测设计院有限公司,湖北,武汉,430050 |
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| 基金项目： | 国家自然科学基金 , 湖北省教育厅科研项目 , 湖北省武汉市青年科技晨光计划 |
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| 摘 要： | 基于混凝土中钢筋均匀锈蚀及锈蚀产物仅仅填充且填满锈胀裂缝的假设,考虑混凝土与钢筋介面锈蚀前后的变形协调条件,以及保护层裂纹界面的部分承载能力,建立了带箍筋混凝土构件锈胀开裂模型,并通过直流阳极极化加速锈蚀试验对模型进行了验证.对于箍筋间距100 mm及150 mm两种工况,裂纹宽度实测值与模型预测值具有较好的一致性.
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| 关 键 词： | 箍筋 混凝土构件 锈胀模型 |
| 文章编号： | 1671-4512（2007）09-0025-03 |
| 修稿时间： | 2006-09-11 |
Influence of the stirrup on corrosive expanding of the concrete building units |
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| Chen Yueshun,Wei Jun,Gao Zongyu,Zhou Xiwu. Influence of the stirrup on corrosive expanding of the concrete building units[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2007, 35(9): 25-27 |
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| Authors: | Chen Yueshun Wei Jun Gao Zongyu Zhou Xiwu |
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| Affiliation: | 1. College of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China; 2 .School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430068, China; 3. China Zhongtie Major Bridge Reconnaissance and Design Institute cO Ltd, Wuhan 430050, China |
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| Abstract: | Corrosive expanding crack model for concrete members with stirrup is proposed,after hypothesizing that reinforced bars in concrete members are corroded uniformly and the corrosive expanding cracks will be filled fully by the corrosive products from reinforced bars and considering that the corrosive displacement compatibility condition of the interface between reinforced bar and protective layer before/after corrosion and the partial carrying capacity of the crack interfaces in protective layer concrete.The model was verified by the straight flow anodic polarization accelerates corrosion test results.For the stirrups with the space of 100mm and 150mm under the operation conditions,the measured crack expanding widths agree with the predicted ones. |
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| Keywords: | stirrup concrete building unit corrosive expanding model |
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