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首页> 外文会议>International Structural Engineering and Construction Conference(ISEC-03); 20050920-23; Shunan(JP) >Mechanical properties of corroded steel plate under tensile force
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Mechanical properties of corroded steel plate under tensile force

机译：张力作用下腐蚀钢板的力学性能

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摘要

Recently, the damage of steel structure by corrosion, which causes the unavoidable strength deterioration, is becoming more serious problem in Japan. But the theoretical judgment method of strength deterioration caused by corrosion has not been clarified in steel bridge maintenance yet. In this study, the tensile tests were carried out in order to clarify the relation between representative thickness to estimate the mechanical properties of corroded plate and the condition of corroded surface. The main conclusions are as follows: (1) the elongation capacity of corroded steel plate deteriorates significantly in the region of the coefficient of variation for plate thickness CV > 0.05, (2) a representative thickness (Mises thickness) based on Mises stress was proposed to estimate tensile strength of corroded steel plate. It agrees closely with smallest average thickness at the cross-section perpendicular to axial tensile force.
机译：近来，在日本，由于腐蚀而造成的钢结构损坏，导致不可避免的强度降低，正成为越来越严重的问题。但是，由于腐蚀引起的强度下降的理论判断方法在钢桥维修中尚未阐明。在这项研究中，进行了拉伸试验，以阐明代表厚度以估计腐蚀板的机械性能与腐蚀表面状况之间的关系。主要结论如下：（1）当钢板厚度CV> 0.05时，腐蚀钢板的延伸能力显着降低，（2）提出了基于米塞斯应力的代表厚度（米塞斯厚度）估计腐蚀钢板的拉伸强度。它与垂直于轴向拉力的横截面的最小平均厚度非常吻合。

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