摘要
利用符合实际的梁端式试验进行研究,通过观察不同加载速率下粘结界面破坏方式,分析试件的粘结破坏机理,然后通过动态增长系数(DIF)变化情况和破坏机理定量分析不同加载速率对于粘结性能的影响。最后引入加载速率的影响因素,修正已有的GFRP筋与混凝土粘结滑移本构关系模型,并与试验曲线相对比,两者吻合比较好。
A practical beam-end test was used to study.The bond failure mechanism of specimens was analyzed by observing the failure modes of bond interface under different loading rates.Then,the influence of different loading rates on bond performance was quantitatively analyzed by the variation of dynamic growth coefficient(DIF)and failure mechanism.Finally,the influence factor of loading rate was introduced to modify the existing constitutive model of bond slip between GFRP bars and concrete.The comparison with the test curve shows that they are in good agreement.
作者
陈佳浩
涂建维
李召
张家瑞
高奎
CHEN Jia-hao;TU Jian-wei;LI Zhao;ZHANG Jia-rui;GAO Kui(Hubei Key Laboratory of Roadway Bridge and Structure Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《武汉理工大学学报》
CAS
2022年第2期53-59,77,共8页
Journal of Wuhan University of Technology
基金
国家自然科学基金(51978550)。
