Development of Analytical Method for Predicting Residual Mechanical Properties of Corroded Steel Plates
Development of Analytical Method for Predicting Residual Mechanical Properties of Corroded Steel Plates
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DOI：
10.1155/2011/385083
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发表时间：
2011-01-01
影响因子：
3.1
通讯作者：
Dissanayake, P. B. R.
中科院分区：
文献类型：
--
作者：
Appuhamy, J. M. R. S.;Ohga, M.;Dissanayake, P. B. R.
桥梁基础设施的维护和足够的安全保障在交通工程和养护管理行业中至关重要。腐蚀导致强度劣化，导致其运行受损和结构逐渐弱化。由于实际的锈蚀表面不同，仅用实验方法估计锈蚀构件的剩余强度是不够的。然而，在现代实践中，数值模拟正被用来代替耗时和昂贵的实验工作，以及对力学行为、应力分布、极限行为等知识的缺乏了解。本文介绍了多种锈蚀钢板的非线性有限元分析结果，并与各自的拉伸试件进行了比较。此外，还讨论了建立一种准确的分析方法来预测较少测点的锈蚀钢构件剩余强度的可行性。
Bridge infrastructure maintenance and assurance of adequate safety is of paramount importance in transportation engineering and maintenance management industry. Corrosion causes strength deterioration, leading to impairment of its operation and progressive weakening of the structure. Since the actual corroded surfaces are different from each other, only experimental approach is not enough to estimate the remaining strength of corroded members. However, in modern practices, numerical simulation is being used to replace the time-consuming and expensive experimental work and to comprehend on the lack of knowledge on mechanical behavior, stress distribution, ultimate behavior, and so on. This paper presents the nonlinear FEM analyses results of many corroded steel plates and compares them with their respective tensile coupon tests. Further, the feasibility of establishing an accurate analytical methodology to predict the residual strength capacities of a corroded steel member with lesser number of measuring points is also discussed.