锈蚀钢筋混凝土梁疲劳性能数值模拟分析

Numerical Simulating Analysis for Fatigue Behavior of Corroded RC Beam

依据已有试验数据建立锈损钢筋混凝土梁的有限元模型,将锈蚀和疲劳荷载各作为一种损伤变量加到钢筋混凝土模型梁中去,进行有限元模拟分析.从分析中得到不同锈蚀率钢筋混凝土梁的疲劳性能.将由钢筋疲劳本构关系计算出的梁的疲劳寿命值与试验梁结果值进行比较,证明了分析模型的合理性,为损伤构件的抗疲劳设计提供了依据.

Based on the experimental data,the finite element models of reinforced concrete beam is established through ANSYS,which the corrosion damage and fatigue damage are considered. The fatigue performance of reinforced concrete beam of different corrosion degrees is further discussed from the analysis. The results of the finite element analysis are compared with that of model experiments. It supports a new method for the anti-fatigue design of structural member.