«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

37卷

期数:

2020年06期

页码:

46-54

栏目:

出版日期:

2020-11-30

文章信息/Info

Title:

Flexural Behavior of FRP-reinforced ECC Beam

文章编号:

1673-2049(2020)06-0046-09

作者:

周甲佳¹,姚少科²,景 川³,赵 军¹,张丽娟¹

1. 郑州大学 力学与安全工程学院,河南 郑州 450001; 2. 中国科学院大学 工程科学学院,北京 100049; 3. 国网河南省电力公司经济技术研究院,河南 郑州 450052

Author(s):

ZHOU Jia-jia¹, YAO Shao-ke², JING Chuan³, ZHAO Jun¹, ZHANG Li-juan¹

1. School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China; 2. School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China; 3. State Grid Henan Economic Research Institute, Zhengzhou 450052, Henan, China

关键词:

FRP筋-ECC梁;  受弯性能;  理论分析;  数值计算

Keywords:

FRP-reinforced ECC beam;  flexural behavior;  theoretical analysis;  numerical calculation

分类号:

TU311

DOI:

-

文献标志码:

A

摘要:

为探究纤维增强复合材料筋增强高延性纤维增强水泥基复合材料梁(FRP筋-ECC梁)的受弯性能,对其正截面受弯全过程进行了理论分析和数值计算。首先,基于平截面假定和材料本构模型,获得FRP筋增强ECC梁受弯全过程截面应力分布,推导各受力阶段正截面受弯承载力计算公式; 采用MATLAB进行数值计算,对FRP筋-ECC梁受弯全过程进行分析; 将计算获得的荷载-挠度曲线与已有试验曲线对比,验证模型的正确性。然后,基于所提出的理论模型进行参数分析,分析ECC抗压强度及FRP筋配筋率对梁受弯性能的影响。最后,基于所提出的FRP筋-ECC梁延性系数计算公式,分析FRP筋配筋率及ECC抗压强度对梁延性性能的影响,并指出FRP筋-ECC梁的延性变化与梁的破坏模式有很大相关性。结果表明:ECC抗压强度和FPR筋配筋率的变化均可改变梁的破坏模式,但FRP筋配筋率的影响更大; ECC抗压强度对梁的初裂荷载、极限承载能力有较大影响; 配筋率可明显提高梁的短期刚度和极限承载力,但对梁的初裂荷载影响较小。

Abstract:

In order to investigate the flexural behavior of fiber reinforced polymer(FRP)-reinforced engineered cementitious composites beam(FRP-reinforced ECC beam), the theoretical analysis and numerical calculation of the whole normal-section bending process were carried out. Firstly, based on the plane section assumption and the constitutive model of materials, the stress distribution of FRP-reinforced ECC beam during the whole bending process was obtained, and the formula for calculating normal-section flexural capacity was derived at each loading stage. The whole bending process of FRP-reinforced ECC beam was analyzed by numerical calculation with MATLAB. The correctness of the model was verified by comparing the calculated load-deflection curves with the existing test results. Then, based on the proposed theoretical model, the influence of ECC compressive strength and FRP reinforcement ratio on the flexural performance of the beam was analyzed. Finally, based on the proposed ductility coefficient calculation formula of FRP-reinforced ECC beam, the influence of FRP reinforcement ratio and ECC compressive strength on the ductility of beam was analyzed, and it was pointed out that the ductility change of FRP-reinforced ECC beam was closely related to the failure mode of beams. The results show that the change of ECC compressive strength and FPR reinforcement ratio can change the failure mode of the beam, but the influence of FRP reinforcement ratio is greater. ECC compressive strength has great influence on the initial crack load and ultimate bearing capacity of the beam. The reinforcement ratio can significantly improve the short-term stiffness and ultimate bearing capacity of the beam, but has little effect on the initial crack load of the beam.

参考文献/References:

[1] 刘 翠.FRP筋力学性能及预应力FRP混凝土梁受弯承载力研究[D].武汉:华中科技大学,2012. LIU Cui.Study on the Performance of FRP Tendons and Flexural Behavior for Prestressed Concrete Beams with CFRP[D].Wuhan:Huazhong University of Science and Technology,2012.
[2]DENVID L,HOAT J P.Experimental Study of Hybrid FRP Reinforced Concrete Beams[J].Engineering Structures,2010,32(12):3857-3865.
[3]欧进萍,王 勃,何 政.CFRP加筋混凝土梁的力学性能试验与分析[J].土木工程学报,2005,38(12):8-12,31. OU Jin-ping,WANG Bo,HE Zheng.Mechanical Behavior of Concrete Beams Reinforced with CFRP Bars[J].China Civil Engineering Journal,2005,38(12):8-12,31.
[4]朱 虹,董志强,吴 刚,等.FRP 筋混凝土梁的刚度试验研究和理论计算[J].土木工程学报,2015,48(11):44-53. ZHU Hong,DONG Zhi-qiang,WU Gang,et al.Experimental Study and Theoretical Calculation on the Flexural Stiffness of Concrete Beams Reinforced with FRP Bars[J].China Civil Engineering Journal,2015,48(11):44-53.
[5]ABDALLA H A.Evaluation of Deflection in Concrete Members Reinforced with Fibre Reinforced Polymer(FRP)Bars[J].Composite Structures,2002,56(1):63-71.
[6]LI V C.On Engineered Cementitious Composites(ECC)[J].Journal of Advanced Concrete Technology,2003,1(3):215-230.
[7]LI V C,MISHRA D K,WU H C.Matrix Design for Pseudo-strain-hardening Fiber Reinforced Cementitious Composites[J].Materials and Structures,1995,28:586-595.
[8]FISCHER G,LI V C.Deformation Behavior of Fiber-reinforced Polymer Reinforced Engineered Cementitious Composite(ECC)Flexural Members Under Reversed Cyclic Loading Conditions[J].ACI Structural Journal,2003,100(1):25-35.
[9]HUAN Y J,WEI W J,JIN Y.Experimental Study on FRP-reinforced PP ECC Beams Under Reverse Cyclic Loading[J].Mechanics of Composite Materials,2014,50(4):447-456.
[10]LI V C,WANG S,WU C.Tensile Strain-hardening Behavior of Polyvinyl Alcohol Engineered Cementitious Composite(PVA-ECC)[J].ACI Materials Journal,2001,98(6):483-492.
[11]LI H D,XU S L,LEUNG C K Y.Tensile and Flexural Properties of Ultra High Toughness Cementitious Composite[J].Journal of Wuhan University of Technology:Materials Science Edition,2009,24(4):677-683.
[12]PAEGLE I,FISCHER G.Phenomenological Interpretation of the Shear Behavior of Reinforced Engineered Cementitious Composite Beams[J].Cement and Concrete Composites,2016,73:213-225.
[13]LI V C,WANG S X.Flexural Behaviors of Glass Fiber-reinforced Polymer(GFRP)Reinforced Engineered Cementitious Composite Beams[J].ACI Materials Journal,2002,99(1):11-21.
[14]YUAN F,PAN J L,LEUNG C K Y.Flexural Behaviors of ECC and Concrete/ECC Composite Beams Reinforced with Basalt Fiber-reinforced Polymer[J].Journal of Composites for Construction,2013,17(5):591-602.
[15]何佶轩.FRP增强ECC梁及ECC/混凝土组合梁抗剪性能研究[D].南京:东南大学,2016. HE Ji-xuan.Study on Shear Behaviors of FRP Reinforced ECC Beam and ECC/Concrete Composite Beam[D].Nanjing:Southeast University,2016.
[16]王必元.ECC力学性能及其增强钢筋/FRP筋-混凝土复合梁受弯性能研究[D].扬州:扬州大学,2016. WANG Bi-yuan.Study on ECC Mechanical Properties and Bending Performance of Concrete Composite Beams Reinforced with Steel Bars or FRP Bars[D].Yangzhou:Yangzhou University,2016.
[17]CAI J M,PAN J L,ZHOU X M.Flexural Behavior of Basalt FRP Reinforced ECC and Concrete Beams[J].Construction and Building Materials,2017,142:423-430.
[18]ZHOU J J,PAN J L,LEUNG C K Y.Mechanical Behavior of Fiber-reinforced Engineered Cementitious Composites in Uniaxial Compression[J].Journal of Materials in Civil Engineering,2015,27(1):04014111.

相似文献/References:

[1]王文达,易练波,范家浩.中空夹层圆钢管混凝土构件内外法兰连接 受弯性能分析[J].建筑科学与工程学报,2020,37(04):42.[doi:10.19815/j.jace.2019.10035]
　WANG Wen-da,YI Lian-bo,FAN Jia-hao.Analysis of Bending Performance of Inner and Outer Flange Connections of Circular Concrete-filled Double Skin Steel Tubular Member[J].Journal of Architecture and Civil Engineering,2020,37(06):42.[doi:10.19815/j.jace.2019.10035]
[2]章一萍,李碧雄,廖 桥,等.超高强钢筋ECC梁受弯性能试验及承载力分析[J].建筑科学与工程学报,2020,37(06):38.
　ZHANG Yi-ping,LI Bi-xiong,LIAO Qiao,et al.Flexural Behaviors Test and Capacity Analysis of Ultra High Strength Rebar Reinforced Engineered Cementitious Composites Beams[J].Journal of Architecture and Civil Engineering,2020,37(06):38.
[3]程东辉,王楷文,宋 超.预应力再生混凝土叠合梁受弯性能试验研究[J].建筑科学与工程学报,2022,39(02):52.[doi:10.19815/j.jace.2021.03096]
　CHENG Dong-hui,WANG Kai-wen,SONG Chao.Experimental Study on Flexural Behavior of Prestressed Recycled Concrete Composite Beams[J].Journal of Architecture and Civil Engineering,2022,39(06):52.[doi:10.19815/j.jace.2021.03096]
[4]周静海,吴晓鑫,于杭琳,等.基于分形理论的废弃纤维再生混凝土梁受弯性能研究[J].建筑科学与工程学报,2023,40(04):52.[doi:10.19815/j.jace.2021.09122]
　ZHOU Jinghai,WU Xiaoxin,YU Hanglin,et al.Study on flexural performance of recycled concrete beams with waste fiber based on fractal theory[J].Journal of Architecture and Civil Engineering,2023,40(06):52.[doi:10.19815/j.jace.2021.09122]
[5]陆春华,宋泽鹏,李锺奥,等.氯盐与重复荷载共同作用下海工混凝土梁受弯性能退化分析[J].建筑科学与工程学报,2023,40(05):52.[doi:10.19815/j.jace.2021.12111]
　LU Chunhua,SONG Zepeng,LI Zhongao,et al.Degradation analysis of flexural performance of marine concrete beams under combined action of chloride and repeated load[J].Journal of Architecture and Civil Engineering,2023,40(06):52.[doi:10.19815/j.jace.2021.12111]
[6]延永东,武珂珂,陆春华,等.碳纤维布加固损伤再生混凝土梁受弯性能研究[J].建筑科学与工程学报,2024,41(05):113.[doi:10.19815/j.jace.2022.09023]
　YAN Yongdong,WU Keke,LU Chunhua,et al.Study on flexural capacity of damaged recycled aggregate concrete beams strengthened with CFRP sheets[J].Journal of Architecture and Civil Engineering,2024,41(06):113.[doi:10.19815/j.jace.2022.09023]
[7]马张永,孔祥龙,陈志华,等.轻质混凝土组合墙板受弯性能试验与数值研究[J].建筑科学与工程学报,2024,41(06):10.[doi:10.19815/j.jace.2022.12066]
　MA Zhangyong,KONG Xianglong,CHEN Zhihua,et al.Experimental and numerical study on flexural behavior of lightweight concrete composite wallboard[J].Journal of Architecture and Civil Engineering,2024,41(06):10.[doi:10.19815/j.jace.2022.12066]

备注/Memo

备注/Memo:

收稿日期:2020-03-22 基金项目:国家重点研发计划项目(2016YFE0125600); 国家自然科学基金青年科学基金项目(51708510); 河南省科技厅科技攻关(国际合作)项目(182102410045); 河南省高等学校重点科研项目(19A560005) 作者简介:周甲佳(1984-),女,河南南阳人,讲师,工学博士,E-mail:zhouaf@zzu.edu.cn。

常用功能

更新日期/Last Update: 1900-01-01