特殊环境下碳纤维增强材料锚杆粘结滑移试验研究及数值模拟  

EXPERIMENTAL STUDY AND NUMERICAL SIMULATION OF CFRP ANCHOR BOND-SLIP UNDER THE SPECIAL ENVIRONMENT

作　　者：张鹏[1] 杨文瑞[1] 邓朗妮[1] 邓宇[1] 彭翰泽[1] 张恺[1] 

机构地区：[1]广西工学院土木建筑工程系,广西柳州545006

出　　处：《工业建筑》2012年第11期97-101,144,共6页Industrial Construction

基　　金：国家自然科学基金资助项目(51168006);广西柳州市应用技术研究与开发计划项目(2010020603)

摘　　要：通过考虑酸、碱、盐、冻融循环环境影响后的碳纤维增强材料CFRP锚杆粘结性能试验,拟合不同环境粘结-滑移(τ-s)关系表达式;并基于试验参数,采用ANSYS非线性弹簧单元Combin 39模拟CFRP锚杆粘结单元,引用拟合τ-s关系曲线确定弹簧单元荷载-位移(F-S)关系参数;模拟分析与试验结果对比表明:由本试验拟合的τ-s关系曲线能很好地反映CFRP筋与环氧砂浆受特殊环境影响后粘结性能的变化。为经常处于特殊环境下的CFRP锚杆性能分析、设计理论及工程应用提供理论依据,也可为相关规范的编制和完善提供参考。Through the CFRP anchor bond performance test after acid, alkali, salt, freeze-thaw cycle environmental impact, fitting different environment bond-slip relational expression and also based on the test parameters, CFRP anchor bond unit was simulated with nonlinear spring element Combin 39 of ANSYS. The fit τ--s curve was used for determining F-S relation parameters of the spring unit. The comparison between the simulation analysis and experimental results showed that the fit bond-slip relation curve could reflect well the CFRP reinforcement and epoxy mortar performance changes after acid, alkali, salt, freeze-thaw cycle env.ironmental impact. Which provided a theoretical basis for performance analysis, design theory and engineering application of CFRP anchor under special environment, also provided a reference for compiling and perfecting relevant norms.

关 键 词：酸碱盐 冻融循环 CFRP锚杆 粘结滑移关系拟合 ANSYS数值模拟 

分 类 号：TU472[建筑科学—结构工程]