| HPF加固RC足尺梁二次受力抗弯试验研究 |
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| 引用本文： | 卜良桃,叶蓁,胡尚瑜.HPF加固RC足尺梁二次受力抗弯试验研究[J].湖南大学学报(自然科学版),2007,34(3):15-19. |
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| 作者姓名： | 卜良桃 叶蓁 胡尚瑜 |
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| 作者单位： | 湖南大学,土木工程学院,湖南,长沙,410082 |
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| 基金项目： | 湖南省科技厅科技重点项目(05SK2010)，湖南省交通厅科技项目(200514) |
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| 摘 要： | 对4根高性能复合砂浆钢筋网加固的钢筋混凝土足尺梁进行了正截面抗弯二次受力试验研究,通过与另4根同配置未加固钢筋混凝土梁的试验结果对比,研究了原截面纵向配筋率对加固梁抗弯承载力和截面刚度的影响．试验采用三面U型加固形式,量测试验梁裂缝分布形态、荷载-挠度曲线、钢筋应变发展规律等．试验表明复合砂浆钢筋网薄层加固是一种有效的加固方法,能够显著地提高钢筋混凝土梁的抗弯承载力、截面刚度以及抗裂性能．
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| 关 键 词： | 复合砂浆 钢筋网 钢筋混凝土梁 加固 二次受力 |
| 文章编号： | 1000-2472（2007）03-0015-05 |
| 修稿时间： | 2006-03-26 |
Experimental Study of RC Beam Strengthened by Ferrocement Mortar Subjected to Secondary Load |
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| BU Liang-tao,YE Zhen,HU Shang-yu.Experimental Study of RC Beam Strengthened by Ferrocement Mortar Subjected to Secondary Load[J].Journal of Hunan University(Naturnal Science),2007,34(3):15-19. |
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| Authors: | BU Liang-tao YE Zhen HU Shang-yu |
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| Institution: | College of Civil Engineering, Hunan Univ, Changsha ,Hunan 410082,China |
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| Abstract: | An experimental study was conducted on the flexural behavior of Reinfoced concrete beam strengthened by high capability ferroeement mortar subject to secondary load.Based on the eomparision between test results of four reinforced beams strengthened by ferroeement mortar and four plain renforced beams,the ef- fect of the tension reinforcement ratio of the ferrocement on the flexural strength and deflection capacity was in- vestigated.Beams were reinforced with U-shape,and crack distribution,load-max deflection,strain develop- ment of steel etc.were measured.Test results have indicated that ferrocement motar technology is an efficient method to reinforce RC beam,which can noticeably increase the load-bearing capacity,section stiffness and crack-resisting behavior. |
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| Keywords: | composite mortar reinforcing steel bar mesh RC beam strengthening secondary load |
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