建筑钢结构进展2025，Vol.27Issue(9)：64-72,9.DOI:10.13969/j.jzgjgjz.20240425002
锈蚀钢材表面重建方法及其受拉性能分析
Surface Reconstruction Method and Tensile Property Analysis of Corroded Steel
摘要
Abstract
Corrosion is the main cause of mechanical property degradation of steel structure.Therefore,an accelerated corrosion test was carried out using samples from the angle steel of the transmission tower.Samples with different degrees of corrosion were selected as the research objects.The surface morphology data of the samples were collected with the help of three-dimensional scanner,and the variation rule of the macroscopic corrosion index(thickness of rust layer)and the microscopic index(fractal dimension)with the corrosion degree was analyzed.According to the fractal properties of the surface of corroded specimens,a method was proposed to simulate the surface of corroded specimens by using random midpoint displacement method to construct fractal Brownian surface with corrosion rate,thickness of rust layer and fractal dimension as indexes.Based on the statistical data of the three-dimensional contour surface of the corroded specimen,three-dimensional models of the corroded specimens were established,and the mechanical properties of the models were simulated by ABAQUS software.The results show that the proposed method based on fractal brownian motion(FBM)can effectively introduce the corrosion index into the corrosion model and provide a feasible method for evaluating the tensile properties of non-uniformly corroded steel.关键词
输电铁塔/非均匀锈蚀/加速锈蚀试验/分形理论/表面重建/随机模型/受拉性能Key words
transmission tower/non-uniform corrosion/accelerated corrosion test/fractal theory/surface reconstruction/stochastic model/tensile property分类
信息技术与安全科学引用本文复制引用
张衡,江文强,郭玉程,高飞..锈蚀钢材表面重建方法及其受拉性能分析[J].建筑钢结构进展,2025,27(9):64-72,9.基金项目
河北省"三三三人才工程"资助项目(C20231056) （C20231056）
