| 局部损伤圆木柱维修加固方法的试验研究 |
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| 引用本文： | 许清风.局部损伤圆木柱维修加固方法的试验研究[J].中南大学学报(自然科学版),2012,43(4):1506-1513. |
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| 作者姓名： | 许清风 |
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| 作者单位： | 上海市工程结构新技术重点实验室,上海200032;上海市建筑科学研究院(集团)有限公司,上海200032 |
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| 基金项目： | 上海市科委青年科技启明星跟踪计划项目(11QH1402100);国家“十一五”科技支撑计划项目(2006BAJ03A10-02) |
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| 摘 要： | 对9根圆木柱采用局部顺纹木块替换并在接缝处用水平向CFRP布包裹进行维修加固研究.研究结果表明:不进行维修加固的受损圆木柱的极限承载力明显降低,降低幅度大于其截面损失幅度,且破坏呈明显的偏心受力特征；局部受损处用完好顺纹木块替换并用水平向CFRP布包裹后,其受压承载力可完全恢复；顺纹木块局部替换并用水平向CFRP布包裹维修加固局部受损圆木柱是行之有效的方法,可用于木结构维修加固的工程实践.
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| 关 键 词： | 圆木柱 维修加固 局部损伤 承载力 |
Experimental study of strengthening methods of partially-damaged circular wood columns |
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| XU Qing-feng.Experimental study of strengthening methods of partially-damaged circular wood columns[J].Journal of Central South University:Science and Technology,2012,43(4):1506-1513. |
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| Authors: | XU Qing-feng |
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| Institution: | XU Qing-feng1,2 (1.Shanghai Key Laboratory of New Technology Research on Engineering Structure,Shanghai 200032,China; 2.Shanghai Research Institute of Building Sciences(Group) Co.Ltd.,Shanghai 200032,China) |
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| Abstract: | A total of 9 partially-damaged circular wood columns repaired and strengthened with new wood blocks parallel to the wood grains and wrapped with CFRP stripes were experimentally studied.The results show that the ultimate compressive strength of partially-damaged circular wood columns is significantly decreased in comparison with the control specimen,the range of decrease is larger than the loss of the cross-section,and the failure mode would change from central axial compression to eccentric compression.After replacing the damaged area with wood blocks parallel to the wood grains and wrapping up with CFRP stripes,the load-bearing capacity would be restored.Combination of new wood blocks parallel to the wood grains and CFRP stripes is effective for repairing and strengthening partially-damaged circular wood columns. |
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| Keywords: | circular wood column repair and strengthen partially-damaged load-bearing capacity |
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