| 钢筋锈蚀对混凝土梁抗剪性能的影响 |
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| 引用本文： | 倪国荣,戎冠纶.钢筋锈蚀对混凝土梁抗剪性能的影响[J].混凝土与水泥制品,2005,11(4):4-6. |
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| 作者姓名： | 倪国荣 戎冠纶 |
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| 作者单位： | 1. 浙江大学结构工程研究所,杭州,310027
2. 中港三航浦东分公司,上海,200137 |
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| 摘 要： | 钢筋锈蚀是混凝土构件主要病害之一。与梁底纵筋相比,箍筋易首先腐蚀,且腐蚀程度更为严重。本文在研究锈蚀RC构件抗剪承载力衰减模型的基础上,借助MonteCarlo模拟,分析了钢筋锈蚀对RC梁抗剪承载力的影响。结果表明,箍筋的锈蚀率明显大于纵筋,构件抗剪失效的可能性大大增加,对梁的安全性和耐久性具有潜在危害。
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| 关 键 词： | 钢筋混凝土梁 钢筋锈蚀 箍筋 抗剪承载力 安全性 耐久性 |
| 文章编号： | 1000-4637（2005）04-04-03 |
| 收稿时间： | 2005-06-23 |
| 修稿时间： | 2005年6月23日 |
Influence of Steel Corrosion on the Shearing Performance of RC Beams |
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| NI Guo-rong,RONG Guan-lun.Influence of Steel Corrosion on the Shearing Performance of RC Beams[J].China Concrete and Cement Products,2005,11(4):4-6. |
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| Authors: | NI Guo-rong RONG Guan-lun |
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| Abstract: | The corrosion of steel bar is a grave faults for RC menbers. Compared with longitudinal bars at the bottom of beams, thestirrups are usually corroded at the first and the corrosion degree is more serious. Based on investigation of the model of declinning ofshear- bearing capacity of corroded RC beams, and by means of Monte Carlo simulation, the influence of corrosion on shearing capacity ofRC beams is analysed. The rezults show that the corrosion rate of stirraps is obviously larger than that of longitudinal bars, and the possi-bility of failure by shearing is greatly increased. That will potentially endanger to safety and durability of RC beams. |
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| Keywords: | Reiuforced concrete beam Corrosion of steel bar Stirrup Shear- bearing capacity Safety Durability |
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