| 玻璃纤维布加固的钢筋混凝土梁延性分析 |
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| 引用本文： | 王文炜,盛波,李果.玻璃纤维布加固的钢筋混凝土梁延性分析[J].东南大学学报(自然科学版),2005,35(4):569-573. |
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| 作者姓名： | 王文炜 盛波 李果 |
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| 作者单位： | 东南大学交通学院,南京,210096;徐州市公路管理站,徐州,221007;大连理工大学土木工程系,大连,116023 |
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| 摘 要： | 为了确定玻璃纤维布加固的钢筋混凝土梁延性降低的程度,进行了9根玻璃纤维布加固的钢筋混凝土梁和3根对比梁的试验研究.试验中考虑了混凝土立方体抗压强度、加固量、剪跨比和纵向受拉钢筋配筋率4个变化参数.试验结果表明,加固量、剪跨比、配筋率对加固梁的延性影响显著.根据试验结果,建立了加固梁截面延性分析的试验方法,提出了玻璃纤维布加固钢筋混凝土梁延性折减系数,给出了折减系数的统计值.在钢筋混凝土梁延性分析的基础上,根据不同的破坏形态建立了玻璃纤维布加固钢筋混凝土梁延性计算方法,分析了影响延性的主要因素.
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| 关 键 词： | 玻璃纤维布 加固 钢筋混凝土梁 延性 折减系数 |
| 文章编号： | 1001-0505（2005）04-0569-05 |
| 收稿时间： | 12 28 2004 12:00AM |
| 修稿时间： | 2004-12-28 |
Analysis of ductility of reinforced concrete beams strengthened with GFRP sheets |
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| Wang Wenwei,Sheng Bo,Li Guo.Analysis of ductility of reinforced concrete beams strengthened with GFRP sheets[J].Journal of Southeast University(Natural Science Edition),2005,35(4):569-573. |
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| Authors: | Wang Wenwei Sheng Bo Li Guo |
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| Abstract: | In order to ascertain the reduction of ductility, nine RC (reinforced concrete) beams with GFRP (glass fiber reinforced plastic) sheets and three control RC beams were experimentally investigated. Four variable parameters including concrete cube compression strength, number of GFRP, shear span ratio and tension steel ratio are considered in experimental program. An experimental analysis method of ductility is proposed according to the experimental results. A reduction factor of ductility is also proposed to avoid the brittle failure and the experimental statistical value of reduction factor is given. A calculation method is put forward based on different failure modes. Some parameters are analyzed to investigate the effects on the ductility. |
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| Keywords: | GFRP strengthening RC beam ductility reduction factor |
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