[1]涂永明,张继文,钱洋,等.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):563-568.[doi:10.3969/j.issn.1001-0505.2009.03.027]
 Tu Yongming,Zhang Jiwen,Qian Yang,et al.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):563-568.[doi:10.3969/j.issn.1001-0505.2009.03.027]
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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()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第3期
页码:
563-568
栏目:
土木工程
出版日期:
2009-05-20

文章信息/Info

Title:
Experimental and theoretical investigations of flexural load-carrying capacity of concrete beams reinforced with AFRP tendons
作者:
涂永明12 张继文1 钱洋3 陈杰4
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; 2 华南理工大学亚热带建筑科学国家重点实验室, 广州 510640; 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
Author(s):
Tu Yongming12 Zhang Jiwen1 Qian Yang3 Chen Jie4
1 Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096,China
2 State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
3 Architectural Design and Research Institute, Southeast University, Nanjing 210096, China
4 Nanjing Municipal Institute of Civil Architecture Co. Ltd., Nanjing 210002, China
关键词:
AFRP筋 受弯承载能力 平截面假定 灌浆效果
Keywords:
AFRP(aramid fiber reinforced polymer)tendon flexural load-carrying capacity plane-section assumption grouting effect
分类号:
TU377.9
DOI:
10.3969/j.issn.1001-0505.2009.03.027
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.
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 omen with significant cross section rotating angle and flexural deformation when approaching the ultimate state. The mechanical performance of beams with AFRP tendons before cracking is the same as that of traditional beams with steel reinforcements. However, the method for calculating the ultimate load-carrying capacities of beams with AFRP tendons under the first failure mode(ductile failure mode)is different from that for the traditional beams. In this work, an effective calculation method was derived from both the cross section equilibrium condition of forces and the plane-section assumption. The calculated results agree with the test results very well.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 涂永明(1978—),男,博士,副教授,tuyongming@seu.edu.cn.
基金项目: 国家自然科学基金重点资助项目(50238030)、国家自然科学基金资助项目(50178018,50808039)、江苏省自然科学基金资助项目(BK2008148)、教育部博士点基金新教师资助项目(20070286095)、华南理工大学亚热带建筑科学国家重点实验室开放研究资助项目(2008KB24).
引文格式: 涂永明,张继文,钱洋,等.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):563-568. [doi:10.3969/j.issn.1001-0505.2009.03.027]
更新日期/Last Update: 2009-05-20