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首页> 外文期刊>Journal of Materials Engineering and Performance >Extrinsic Influence of Environment-Induced Degradation on Load Carrying Capacity of Steel Beams
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Extrinsic Influence of Environment-Induced Degradation on Load Carrying Capacity of Steel Beams

机译：环境退化对钢梁承载能力的外在影响

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摘要

In this paper, the results of a study aimed at evaluating the strength of wide-flanged beams subjected to corrosion-induced damage, modeled using a standard finite element program (ABAQUS) is presented and discussed. Typical beams in consideration were subjected to different cases of corrosion-induced damage, such as non-uniform and varying degree of material loss that simulates pitting corrosion. Many variables, such as (a) shape of pitting damage, (b) location of pits along the length of the beam, (c) number of pits, and (d) depth of pits, were considered to facilitate a better understanding of the load carrying capacity of steel I-beams having damage quite similar to pitting damage to the web. The results are compared with an "as-new'' beam for purpose of evaluation of the reduction in strength due to environment-induced deterioration. A "corrosion strength reduction factor (CSRF)'' is introduced to help identify the reduction in load carrying capacity as a consequence of both height and depth of the damage due to corrosion. The results are presented in charts for purpose of practical beam design.
机译：在本文中，提出并讨论了使用标准有限元程序（ABAQUS）建模的，旨在评估遭受腐蚀引起的宽翼梁强度的研究结果。考虑中的典型横梁会遭受腐蚀引起的损坏的不同情况，例如模拟点蚀的不均匀和不同程度的材料损失。考虑了许多变量，例如（a）点蚀损坏的形状，（b）沿光束长度的凹坑位置，（c）凹坑的数量以及（d）凹坑的深度），以便于更好地理解钢工字梁的承载能力与网的点蚀非常相似。将结果与“新”梁进行比较，以评估由于环境引起的劣化而导致的强度降低，并引入“腐蚀强度降低因子（CSRF）”以帮助确定载荷的降低由于腐蚀的高度和深度所造成的损坏。结果以图表形式显示，用于实际的梁设计。

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