| 加速锈蚀钢-混凝土组合梁的性能试验研究 |
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| 引用本文： | 余志武,匡亚川,龚匡晖,石卫华.加速锈蚀钢-混凝土组合梁的性能试验研究[J].铁道科学与工程学报,2010,7(3). |
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| 作者姓名： | 余志武 匡亚川 龚匡晖 石卫华 |
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| 作者单位： | 中南大学高速铁路建造技术国家工程实验室,湖南,长沙,410075;中南大学土木建筑学院,湖南,长沙,410075;中南大学土木建筑学院,湖南,长沙,410075 |
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| 基金项目： | 国家自然科学基金资助项目(50878216); 铁道部重点课题(2007G0315) |
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| 摘 要： | 通过恒电流加速模拟试验,研究了钢材锈蚀对钢-混凝土组合梁的耐久性影响规律;通过对试验结果的回归分析,得到了栓钉锈蚀后钢-混凝土组合梁抗弯承载力的计算公式。试验结果表明:随着通电时间的增大,栓钉的锈蚀率增大,组合梁的承载力降低;当通电量相同时,末刷防锈漆试件中的钢梁的锈蚀增加,栓钉的锈蚀降低,其承载力较高;随着栓钉锈蚀率的增大,梁刚度降低,在荷载作用下,梁的相对滑移变大。
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| 关 键 词： | 钢-混凝土组合梁 加速锈蚀 性能退化 承载力 |
Structural behavior of steel-concrete composite beam with accelerated deterioration using a galvanstatic method |
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| YU Zhi-wu
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KUANG Ya-chuan
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GONG Kuang-hui
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SHI Wei-hua.Structural behavior of steel-concrete composite beam with accelerated deterioration using a galvanstatic method[J].Journal of Railway Science and Engineering,2010,7(3). |
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| Authors: | YU Zhi-wu KUANG Ya-chuan GONG Kuang-hui SHI Wei-hua |
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| Institution: | YU Zhi-wu1,2,KUANG Ya-chuan1,GONG Kuang-hui2,SHI Wei-hua2(1.National Engineering Laboratory for High Speed Railway Construction,Central South University,Changsha 410075,China,2.School of Civil and Architectural Engineering,China) |
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| Abstract: | The structural behavior of steel-concrete composite beams was studied by accelerated deterioration using a galvanstatic method.By the regression analysis of experimental results,the formula was proposed for prediction of flexural capacity of deteriorated steel-concretes composite beam.Experimental results show that the corrosion rate of bolts increase with the increasing time of power supply,and the flexural capacity of composite beams decreases with the increase of the corrosion rate of bolts,Compared with... |
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| Keywords: | steel-concrete composite beam accelerated corrosion deterioration of behavior flexural capacity |
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