预应力碳纤维布加固混凝土梁非线性数值模拟

Nonlinear stimulation of behavior of concrete beams strengthened with prestressed CFRP sheets

基于平截面假定,选择适当的钢筋和混凝土本构模型,使用matlab建立非线性数值模型模拟有粘结碳纤维布预应力加固混凝土梁M—φ关系、P—Δ关系。并将模拟结果与试验结果进行对照,达到了良好的模拟效果,并得到一些有价值的结论。

Based on the assumption of plane section, a nonlinear numerical model is established to simulate M-φ and P-△ relationships of concrete beams strengthened with prestressed CFRP sheets. The model uses appropriate constitutive relations. Comparison and analysis of calculation results and test results show that the present method is feasible. Some valuable conclusions are reached.