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| AFRP筋混凝土梁受弯承载能力试验研究与理论分析 | |
| 引用本文： | 涂永明,张继文,钱洋,陈杰.AFRP筋混凝土梁受弯承载能力试验研究与理论分析[J].东南大学学报(自然科学版),2009,39(3). |
| 作者姓名： | 涂永明 张继文 钱洋 陈杰 |
| 作者单位： | 1. 东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096;华南理工大学亚热带建筑科学国家重点实验室,广州510640 2. 东南大学混凝土及预应力混凝土结构教育部重点实验室,南京,210096 3. 东南大学建筑设计研究院,南京,210096 4. 南京市民用建筑设计研究院,南京,210002 |
| 基金项目： | 国家自然科学基金重点项目，国家自然科学基金，江苏省自然科学基金，教育部博士点基金新教师资助项目，华南理工大学亚热带建筑科学国家重点实验室开放研究项目 |
| 摘 要： | 进行了7根配置芳纶纤维(AFRP)筋或钢绞线的有粘结简支梁受弯承载能力试验,分析了构件的开裂荷载与极限承载能力,考察了平截面假定及AFRP筋灌浆效果.试验研究与理论分析表明:有粘结AFRP筋梁的受载全过程可分为从加载到混凝土开裂,再到非预应力筋屈服,最终达到极限承载力这3个阶段;AFRP筋梁在破坏前的截面转角和变形很大,有明显预兆;AFRP筋梁在开裂前的力学性能与传统混凝土梁没有差别,但其第一类破坏形式(适筋破坏)的极限承载能力计算方法与传统混凝土梁不同.根据截面受力平衡条件和平截面假定推导了该破坏形式的承载力计算方法,且计算值与试验值吻合较好. |
| 关 键 词： | AFRP筋 受弯承载能力 平截面假定 灌浆效果 |
Experimental and theoretical investigations of flexural load-carrying capacity of concrete beams reinforced with AFRP tendons |
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| Tu Yongming,Zhang Jiwen,Qian Yang,Chen Jie.Experimental and theoretical investigations of flexural load-carrying capacity of concrete beams reinforced with AFRP tendons[J].Journal of Southeast University(Natural Science Edition),2009,39(3). | |
| Authors: | Tu Yongming Zhang Jiwen Qian Yang Chen Jie |
| Institution: | Tu Yongming1,2 Zhang Jiwen1 Qian Yang3 Chen Jie4(1 Key Laboratory of Concrete , Prestressed Concrete Structure of Ministry of Education,Southeast University,Nanjing 210096,China) (2State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,China) (3Architectural Design , Research Institute,China) (4Nanjing Municipal Institute of Civil Architecture Co.Ltd.,Nanjing 210002,China) |
| Abstract: | Seven simple beams reinforced with bonded AFRP(aramid fiber reinforced polymer) tendons or steel strand are tested.The cracking load and ultimate load-carrying capacity were analyzed.The plane-section assumption and the grouting effect of AFRP tendons were investigated.The results show that the whole loading process of the beams with AFRP tendons can be divided into three stages: loading to concrete cracking,yielding of the tensile reinforcements,and the ultimate failure state.The beams have obvious failure... |
| Keywords: | AFRP(aramid fiber reinforced polymer) tendon flexural load-carrying capacity plane-section assumption grouting effect |
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