随机锈蚀H型钢柱偏压承载力分析OACSTPCD

The variation law of flexural bearing capacity of random pitting steel columns was studied based on the stochastic finite element method to reveal the influence of random corrosion on the ultimate bearing capacity of H-shaped steel columns under eccentric compression.The effects of axial compression ratio,geometrical parameters and corroded depth on the reduction factor of bending capacity for H-shaped steel columns were considered.The applicability of the conclusions of this paper to H-shaped steel columns with different geometrical sizes was obtained.The variation of the reduction factor with the corroded depth was revealed,and the theoretical calculation formula for predicting the reduction factor of bending capacity was proposed.The results indicate that the proposed theoretical formula can accurately predict the bending capacity of H-shaped steel columns with random pitting corrosion.The conclusions of this work can provide help for evaluating the service life and maintenance of existing H-shaped steel members.