FRP-砖界面粘结-滑移计算模型
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摘要
近年来国内外对FRP加固砌体结构技术的应用和研究呈现出快速发展的趋势。FRP-砖的界面力学行为及剥离破坏是FRP加固砌体技术应用的关键基础问题,也是难点问题。该文主要进行了FRP-砖界面粘结性能有限元数值模拟,利用建立的计算模型成功模拟了加载端荷载-位移曲线、FRP-砖界面的滑移分布、粘结应力分布。分析了各影响因素对极限粘结荷载的影响,并与试验结果进行了对比。结果表明:吻合较好,该文采用FRP-砖界面粘结-滑移计算模型是可行的。
External sticking of fiber reinforced polymer(FRP) plates or sheets are widely used for strengthening masonry structures.The behaviour of the FRP-brick interface is crucial to transferring stresses.A computational model is proposed in this paper to simulate the behaviour of bond-slip interface between FRP and brick.Using the computational model,the load-displacement curve,the slip distributions and the bond stress distributions of FRP-brick interface are simulated successfully.A comparison between the computed results and experiment results shows that the model is feasible.
External sticking of fiber reinforced polymer(FRP) plates or sheets are widely used for strengthening masonry structures.The behaviour of the FRP-brick interface is crucial to transferring stresses.A computational model is proposed in this paper to simulate the behaviour of bond-slip interface between FRP and brick.Using the computational model,the load-displacement curve,the slip distributions and the bond stress distributions of FRP-brick interface are simulated successfully.A comparison between the computed results and experiment results shows that the model is feasible.
引文
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[9]朱伯龙.砌体结构设计原理[M].北京:中国建筑工业出版社,1991:13―14.Zhu Bolong.Designing theory of masonry structry[M].Beijing:China Architecture Industry Press,1991:13―14.(in Chinese)
[10]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005:320―325.Jiang Jianjing,Lu Xinzheng,Ye Lieping.Finite elementanalysis of concrete structures[M].Beijing:TsinghuaUniversity Press,2005:320―325.(in Chinese)
[2]张祥顺,谷倩,彭少民.CFRP对砖墙抗震加固对比试验研究与计算分析[J].世界地震工程,2003,19(1):77―82.Zhang Xiangshun,Gu Qian,Peng Shaomin.Comparativeexperimental study of masonry walls strengthened byCFRP and computation model analysis[J].WorldInformation on Earthquake Engineering,2003,19(1):77―82.(in Chinese)
[3]Michael L Albert,Alaa E Elwi,J J Roger Cheng.Strengthening of unreinforced masonry walls using FRPs[J].Journal of Composites for Construction,2001,5(2):76―84.
[4]林磊,叶列平.GFRP布加固砌体墙的试验研究[C].第2届全国土木工程用纤维增强塑料(FRP)应用技术学术交流会.中国昆明,2002,7:215―223.Lin Lei,Ye Lieping.Research on mechanicalperformance of masonry wall strengthened with GFRP[C].The 2nd National Conference on Techniques ofApplication of FRP to Civil Engineering.Kunming,China,2002,7:215―223.(in Chinese)
[5]陆新征.FRP-混凝土界面行为研究[D].北京:清华大学,2004:1―79.Lu Xinzheng.Studies on FRP-concrete interface[D].Beijing:Tsinghua University,2004:1―79.(in Chinese)
[6]朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,1998:530―565.Zhu Bofang.The finite element method theory andapplications[M].Beijing:China Architecture IndustryPress,1998:530―565.(in Chinese)
[7]黄奕辉.FRP与砖界面粘结性能研究及应用[D].泉州:华侨大学,2008:1―74.Huan Yihui.Studies on FRP-brick interface and itsapplication[D].Quanzhou:Huaqiao University,2008:1―74.(in Chinese)
[8]杨勇.型钢混凝土粘结滑移基本理论及应用研究[D].西安:西安建筑科技大学,2003:128―177.Yang Yong.Study on the basic theory and its applicationof bond-slip between steel shape and concrete in SRCstructures[D].Xi’an:Xi’an University of Architectureand Technology,2003:128―177.(in Chinese)
[9]朱伯龙.砌体结构设计原理[M].北京:中国建筑工业出版社,1991:13―14.Zhu Bolong.Designing theory of masonry structry[M].Beijing:China Architecture Industry Press,1991:13―14.(in Chinese)
[10]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005:320―325.Jiang Jianjing,Lu Xinzheng,Ye Lieping.Finite elementanalysis of concrete structures[M].Beijing:TsinghuaUniversity Press,2005:320―325.(in Chinese)
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