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首页> 外文期刊>Advances in Mechanical Engineering >A simplified estimation approach for service life of steel bar within concrete:
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A simplified estimation approach for service life of steel bar within concrete:

机译：混凝土中钢筋使用寿命的简化估算方法：

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Evaluating corrosion of steel bars within concrete cross section was the major task for durability of reinforced concrete structures. Although plenty of steel bars with various boundary condition caused huge computation load in numerical simulation, most of them were in different geometric locations while their other configuration was similar, such as temperature, moisture, and concrete composition. In this article, shape-based estimation approach was introduced for simplifying assessment of durability of concrete structures regarding numerical simulation. Based on the same penetration condition and diffusing media, the similarity of geometric configuration was the primary consideration of shape-based estimation and a mathematic model regarding the length of involving outline within a circular region with given radius was proposed. The crossbeam of an aged reinforced concrete arch bridge in coastal area was assessed, based on which shape-based estimation was proved to be applicable by comparing with finit...
机译：评估钢筋混凝土截面内的钢筋腐蚀是钢筋混凝土结构耐久性的主要任务。尽管大量具有各种边界条件的钢筋在数值模拟中引起了巨大的计算负担，但它们大多数位于不同的几何位置，而它们的其他构造类似，例如温度，湿度和混凝土组成。在本文中，引入了基于形状的估计方法，以简化关于数值模拟的混凝土结构耐久性评估。基于相同的渗透条件和扩散介质，几何形状的相似性是基于形状的估计的主要考虑因素，并提出了一种关于具有给定半径的圆形区域内轮廓的长度的数学模型。评估了沿海地区一座老化的钢筋混凝土拱桥的横梁，在此基础上，与有限元法进行比较，证明了基于形状的估计是适用的。

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