[1]葛文杰,张继文,戴航,等.FRP筋和钢筋混合配筋增强混凝土梁受弯性能[J].东南大学学报(自然科学版),2012,42(1):114-119.[doi:10.3969/j.issn.1001-0505.2012.01.022]
 Ge Wenjie,Zhang Jiwen,Dai Hang,et al.Flexural behavior of concrete beam with hybrid reinforcement of FRP bars and steel bars[J].Journal of Southeast University (Natural Science Edition),2012,42(1):114-119.[doi:10.3969/j.issn.1001-0505.2012.01.022]
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FRP筋和钢筋混合配筋增强混凝土梁受弯性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第1期
页码:
114-119
栏目:
土木工程
出版日期:
2012-01-18

文章信息/Info

Title:
Flexural behavior of concrete beam with hybrid reinforcement of FRP bars and steel bars
作者:
葛文杰张继文戴航涂永明
(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)
Author(s):
Ge WenjieZhang JiwenDai HangTu Yongming
(Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China)
关键词:
FRP筋混合配筋混凝土梁受弯承载力
Keywords:
FRP(fiber reinforced polymer) bars hybrid reinforcement concrete beam flexural capacity
分类号:
TU375.1
DOI:
10.3969/j.issn.1001-0505.2012.01.022
摘要:
根据FRP筋和钢筋的本构模型,提出了FRP筋和钢筋混合配筋增强混凝土梁2种名义配筋率和3种破坏模式的概念,并给出了3种破坏模式的判别条件.利用正截面受弯承载力计算基本假定和截面受力平衡条件,推导了FRP筋和钢筋混合配筋增强混凝土适筋梁正截面受弯承载力建议计算公式.设计制作了5根不同FRP筋和钢筋配筋面积比的混合配筋混凝土梁进行静力抗弯试验,并结合相关试验数据分析表明,适筋梁正截面受弯承载力建议公式计算值与试验实测值吻合较好,可供工程设计参考; 建议在对承载能力要求较高而挠度控制较低的情况下使用混合配筋混凝土梁以充分利用材料的强度; 合理控制混合配筋梁的配筋率及FRP筋和钢筋的配筋面积比,其延性性能满足设计要求.
Abstract:
According to the characteristic of both fiber reinforced polymer (FRP) bars and steel bars, two nominal reinforcement ratios and three failure modes for concrete beams reinforced with FPR bars and steel bars are put forward, and the failure criterion of appropriate hybrid reinforcement beam is given. Flexural capacity of appropriate hybrid reinforcement beam was analyzed under the basic assumption and equilibrium condition of internal forces; further more flexural capacities simplified calculation formula of appropriate hybrid reinforcement beam is also proposed. Five different area ratio of FRP bars to steel bars hybrid reinforced concrete beams were prepared and their static flexural test were made. Relevant experimental data were analyzed, and it is shown that the flexural capacities calculated by proposed simplified formula are close to the test value and can be used in design for reference. In order to make full use of material, it is proposed to exploit hybrid reinforcement beam in the situation where deflection is not in control but bearing capacity is highly demanded. And its ductility performance can meet the code by appropriately controlling the reinforced ratio and the value of Af/As.

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备注/Memo

备注/Memo:
作者简介:葛文杰(1986—),男,博士生;张继文(联系人),男,博士,教授,博士生导师,jwzhang@vip.163.com.
基金项目:国家自然科学基金资助项目(50808039)、江苏省自然科学基金资助项目(BK2009138).
引文格式: 葛文杰,张继文,戴航,等.FRP筋和钢筋混合配筋增强混凝土梁受弯性能[J].东南大学学报:自然科学版,2012,42(1):114-119.[doi:10.3969/j.issn.1001-0505.2012.01.022]
更新日期/Last Update: 2012-01-20