| 织物增强混凝土薄板加固钢筋混凝土梁受弯性能试验研究 |
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| 引用本文： | 荀勇,支正东,张勤.织物增强混凝土薄板加固钢筋混凝土梁受弯性能试验研究[J].建筑结构学报,2010,31(3):70-76. |
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| 作者姓名： | 荀勇 支正东 张勤 |
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| 作者单位： | 盐城工学院;大连理工大学; |
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| 基金项目： | 国家自然科学基金项目(50378018) |
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| 摘 要： | 提出一种采用织物增强混凝土(TRC)薄板加固钢筋混凝土梁的方法,以梁两端纯弯区外侧400mm范围内的锚固方式和加固层织物网层数为主要变化参数,进行3组10根TRC薄板加固钢筋混凝土梁和2根对比梁的受弯性能试验研究,分析加固梁的破坏模式、荷载-挠度关系、荷载-钢筋应变、荷载-混凝土应变关系、裂缝开展情况,研究配网率对受弯承载力的影响。研究结果表明:TRC薄板加固可以有效地提高梁的开裂荷载、屈服荷载和极限荷载;加固后梁的延性略有降低;当配网率提高到一定程度后,加固梁承载力主要由加固层与老混凝土之间的局部脱粘破坏决定。根据不同的破坏模式,提出了TRC薄板加固梁的受弯承载力计算方法,给出了相关计算公式。
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| 关 键 词： | 钢筋混凝土梁 加固 静力试验 受弯承载力 织物增强混凝土 |
| 收稿时间： | 2010-06-05 |
| 修稿时间： | 2010-06-05 |
Experimental research on flexural behavior of reinforced concrete beams strengthened with textile reinforced concrete sheets |
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| XUN Yong,ZHI Zhengdong,ZHANG Qin.Experimental research on flexural behavior of reinforced concrete beams strengthened with textile reinforced concrete sheets[J].Journal of Building Structures,2010,31(3):70-76. |
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| Authors: | XUN Yong ZHI Zhengdong ZHANG Qin |
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| Affiliation: | 1.Yancheng Institute of Technology/a>;Yancheng 224051/a>;China/a>;2.Dalian University of Technology/a>;Dalian 116024/a>;China |
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| Abstract: | A new method with textile reinforced concrete(TRC) sheets is proposed for the strengthening reinforced concrete(RC) beams.Ten strengthened beams and two no-strengthened beams were experimentally investigated.The strengthened beams were grouped into three according to the number of textile layers and anchorage modes in the scope of 400mm outside of pure bending section.The failure pattern,crack development,relationship of load-deflection,relationship of load-steel strain,relationship of load-concrete strain ... |
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| Keywords: | RC beam textile reinforced concrete strengthening static test flexural capacity |
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