碳纤维布加固钢筋混凝土梁的有限元分析方法

Method of Finite Element Models Analysis on CFRP Reinforced Beams

碳纤维布加固混凝土构件计算方法大多基于大量实验数据基础上的经验公式 ,结果较为粗糙。利用非线性有限元方法对其进行分析 ,不仅能够得出结构内力和变形发展全过程 ,而且能够描述裂缝的形成和发展。本文分析了碳纤维加固混凝土构件的材料 ,建立了利用碳纤维布加固钢筋混凝土梁的有限元分析方法。

The mothod of concrete reinforcement with CFRP mostly according to a great deal of experiment.data foundation of empirical formula,the result is coarseness.To develop a more thorough understanding of the bending behavior of reinforced concretc beams,the study on nonlinear finite analysis is very imperial.The paper sets up finite element models of 4-point RC beam strengthened with CFRP sheet.Not only material nonlinear of concrete and steel bar but also bond style of longitudinal steel and CFRP are taken into account.And also put forward a method to study the basic mechanics performances of RC simply supported beams strengthened by CFRP with nonlinear finite element analysis in the ADINA software environment.