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| 碳纤维布增强二次受力RC构件轴拉计算方法 | |
| 引用本文： | 任庆新,刘艳华,李顺群.碳纤维布增强二次受力RC构件轴拉计算方法[J].辽宁工程技术大学学报(自然科学版),2009,28(3). |
| 作者姓名： | 任庆新 刘艳华 李顺群 |
| 作者单位： | 1. 清华大学,土木工程系,北京,100084;沈阳建筑大学,土木工程学院,辽宁,沈阳,110168 2. 沈阳农业大学,水利学院,辽宁沈阳,110161 3. 天津城市建设学院,土木建筑系,天津,300384 |
| 基金项目： | 国家自然科学基金资助项目，大连理工大学海岸和近海工程国家重点实验室基金资助项目 |
| 摘 要： | 结合在役钢筋混凝土受拉构件承载力不足的特点,推导了碳纤维布增强二次受力钢筋混凝土构件轴心受拉计算表达式,探讨了预加载程度、持载程度和构件开裂载荷、极限载荷之间的定量关系,并进行了8根碳纤维布增强二次受力钢筋混凝土构件轴心抗拉性能试验研究,分析预加载程度、持载程度对构件开裂载荷和极限载荷的影响.结果表明,粘贴碳纤维布可以有效地提高二次受力钢筋混凝土轴心受拉构件极限承载力.所提表达式与试验数据有较好的一致性,可供实际工程设计参考,并对二次受力钢筋混凝土轴心受拉加固具有理论指导意义和工程应用价值. |
| 关 键 词： | 碳纤维布 二次受力 钢筋混凝土 轴心抗拉承载力 计算方法 |
Computational method on axial tension of secondary load RC members strengthened with carbon fiber reinforced plastic sheets |
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| REN Qingxin,LIU Yanhua,LI Shunqun.Computational method on axial tension of secondary load RC members strengthened with carbon fiber reinforced plastic sheets[J].Journal of Liaoning Technical University (Natural Science Edition),2009,28(3). | |
| Authors: | REN Qingxin LIU Yanhua LI Shunqun |
| Institution: | 1.Department of Civil Engineering;Tsinghua University;Beijing 100084;China;2. School of Civil Engineering;Shenyang Jianzhu University;Shenyang 110168;3. College of Water Resource;Shenyang Agricultural University;Shenyang 110161;4. Department of Civil Engineering;Tianjin Institute of Urban Construction;Tianjin 300384;China |
| Abstract: | To overcome the problem of insufficient bearing capacity in some existing aging reinforced concrete (RC), a formulation is presented in this paper for calculating the tension capacity of the secondary load RC members strengthened with externally bonded carbon fiber reinforced plastic (CFRP) sheets. Also, the relationship between preloading/continual loading and cracking load/ultimate load is investigated. Eight RC members are tested to examine the impact of preloading and continual loading on the cracking l... |
| Keywords: | CFRP sheet secondary load reinforced concrete tension strength computational method |
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