摘要
玻璃纤维复材(GFRP)筋水泥基复合材料(ECC)构件受力变形过程中,筋材与基体协调变形能力影响构件及组合构件的工作性能。本文通过GFRP筋ECC黏结-滑移试验建立界面黏结滑移本构,结合ECC变形及开裂后力学属性,采用ABAQUS有限元软件进行GFRP筋ECC构件黏结界面力学性能分析,研究筋材及基体应变分布随加载过程的演化及不同黏结-滑移关系对构件工作性能的影响。研究表明,GFRP筋材直径影响黏结滑移性能及界面破坏模式,界面力学属性的提高能够增加二者协同工作性能,改善构件的开裂属性;基于试验中筋材应变分布,分析基体破坏、应力分布,研究构件受拉破坏过程整体拉伸刚度变化,为反演宏观构件正常工作状态下工作机理提供分析方法。
During the process of force deformation of GFRP reinforced ECC components,the coordinating deformation ability of GFRP and ECC affects the working performance.The interface bond-slip constitutive model was established by ECC bond-slip test of GFRP bar in this study.Combined with ECC deformation and mechanical properties after cracking,ABAQUS finite element was used to analyze the mechanical properties of the bond interface of GFRP reinforced ECC components.The strain distribution was investigated with the evolution of the loading process and the effects of different bond-slip relationships of the components.The results show that the diameter of GFRP bar affects the bond-slip performance and interface failure mode.The improvement of interface mechanical properties can increase the synergistic performance of the two components and improve the cracking properties of the components.The change of the overall tensile stiffness of the member subjected to the tensile failure process were investigated to provide an analytical method for inverting the working mechanism of the macroscopic component under normal working conditions.
作者
张黎飞
郑愚
胡少伟
邸博
夏立鹏
周玲珠
王晓璐
张展铭
ZHANG Lifei;ZHENG Yu;HU Shaowei;DI Bo;XIA Lipeng;ZHOU Lingzhu;WANG Xiaolu;ZHANG Zhanming(Dongguan University of Technology,School of Environment and Civil Engineering,Dongguan523808,China;Hohai University,The College of Mechanics and Materials,Nanjing211100,China;Department of Materials and Structural Engineering,Nanjing Hydraulic Research Institute,Nanjing210029,China;Dalian University of Technology,Dalian116024,China)
出处
《工业建筑》
CSCD
北大核心
2019年第9期10-17,共8页
Industrial Construction
基金
国家自然科学基金项目(51678149)
广东省普通高校基础研究与应用基础研究重点项目(2018KZDXM068)
广东省科技计划-公益研究与能力建设方向(2016A010103045)
东莞市社会科技发展重点项目(20185071401603)
