论文部分内容阅读
在试验基础上采用“三维实体-弹簧-壳元”有限元模型对碳纤维布加固钢板进行了有限元分析,综合分析了纤维布加固钢结构过程中钢板材质、钢板厚度、碳纤维布种类等因素对破坏形态、极限承载力、粘结滑移及应变分布等性能的影响。结果表明,破坏形态大多为纤维布与钢板的剥离破坏,钢板材质、厚度对荷载-应变曲线影响较小,极限承载力随着粘结宽度的增加而明显增加,而钢板厚度及材性对极限承载力基本上没有影响。将有限元计算结果与试验结果及理论计算结果进行比较分析,分析结果与试验吻合,从而验证了有限元模型的精度及可靠性。
Based on the experiment, the finite element analysis of CFRP sheets was carried out by using the “3D solid-spring-shell element” finite element model. The effects of the material, the thickness of the steel sheets and the types of the CFRP sheets on the steel structure were comprehensively analyzed Factors on the failure morphology, ultimate bearing capacity, bond slip and strain distribution and other properties. The results show that most of the failure modes are the peeling failure of the fiber cloth and the steel plate. The effect of the material and thickness of the steel plate on the load-strain curve is small. The ultimate bearing capacity increases obviously with the increase of the bond width. The bearing capacity is basically unaffected. The finite element calculation results are compared with the test results and the theoretical calculation results. The analysis results agree well with the experimental results, which verify the accuracy and reliability of the finite element model.