[1]刘志彬,曾志兴,刘祥,等.配置500 MPa级钢筋混凝土梁的抗弯延性分析[J].华侨大学学报(自然科学版),2020,41(4):434-438.[doi:10.11830/ISSN.1000-5013.202002026]
　LIU Zhibin,ZENG Zhixing,LIU Xiang,et al.Analysis of Flexural Ductility of Reinforced Concrete Beams With 500 MPa Steel[J].Journal of Huaqiao University(Natural Science),2020,41(4):434-438.[doi:10.11830/ISSN.1000-5013.202002026]
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配置500 MPa级钢筋混凝土梁的抗弯延性分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第41卷
期数:
2020年第4期
页码:
434-438
栏目:
出版日期:
2020-07-20

文章信息/Info

Title:
Analysis of Flexural Ductility of Reinforced Concrete Beams With 500 MPa Steel
文章编号:
1000-5013(2020)04-0434-05
作者:
刘志彬1;  曾志兴1;  刘祥2;  赵荣春1
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 中南大学 土木工程学院, 湖南 长沙 410075
Author(s):
LIU Zhibin1;  ZENG Zhixing1;  LIU Xiang2;  ZHAO Rongchun1
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. School of Civil Engineering, Central South University, Changsha 410075, China
关键词:
500 MPa级钢筋;  混凝土梁;  抗弯破坏;  延性
Keywords:
500 MPa steel bar;  concrete beam;  flexural failure;  ductility
分类号:
TU375.1
DOI:
10.11830/ISSN.1000-5013.202002026
文献标志码:
A
摘要:
为分析配置500 MPa级纵筋混凝土梁的抗弯延性性能,对6个混凝土梁试件进行弯曲破坏试验,分析不同混凝土强度和纵筋配筋率对延性性能的影响.结果表明:配置500 MPa级纵筋混凝土梁与400 MPa级纵筋混凝土梁的弯曲破坏形式基本一致;随着混凝土强度等级的增大,梁的抗弯承载力和延性也相应增大;纵筋配筋率的提高会使梁的延性降低;相对于400 MPa级纵筋混凝土梁,在相同的纵筋配筋率及混凝土强度条件下,配置500 MPa级纵筋混凝土梁的抗弯承载力得到明显改善,但其延性会下降.在工程中,可以通过降低纵筋配筋率提高混凝土梁的延性,达到节省钢筋的目的.
Abstract:
n order to analyze the flexural ductility performance of concrete beams with 500 MPa longitudinal reinforcement, the bending failure tests of 6 concrete beam specimens were carried out to analyze the influence of different concrete strengths and the ratio of longitudinal reinforcement on the ductility performance. The results show that the bending failure of 500 MPa reinforced concrete beam is basically the same as that of 400 MPa reinforced concrete beam. With the increase of concrete strength grade, the flexural capacity and ductility of the beam increase. With the increase of the ratio of longitudinal reinforcement, the ductility of the beam decreases. Comparing with the 400 MPa longitudinal reinforced concrete beam, the flexural capacity of the 500 MPa longitudinal reinforced concrete beam with the same longitudinal reinforcement ratio and concrete strength is significantly improved, but its ductility decreases. In the engineering, the ductility of the concrete beam can be improved by reducing the ratio of longitudinal reinforcement, so as to save steel bar.

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备注/Memo

备注/Memo:
收稿日期: 2020-02-25
通信作者: 曾志兴(1967-),男,教授,博士,主要从事混凝土结构的研究.E-mail:zhixing@hqu.edu.cn.
基金项目: 福建省自然科学基金资助项目(2017J01095); 华侨大学研究生科研创新基金资助项目(18014086019)
更新日期/Last Update: 2020-07-20