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本文对国产冷弯型钢作了试验研究,测得型钢全截面、棱角及平板部分屈服强度。其结果表明:冷弯型钢屈服强度显著高于母材的屈服强度;再一次验证了我们所提出的冷弯型钢屈服强度计算公式与实测值相符较好。文中进一步提出计算冷弯型钢屈服强度的一种简化公式,它形式简单,应用简便,可以满足一般工程应用之需要。
In this paper, the cold-formed steel made in China was tested and the full section, angularity and flat section yield strength of the section were measured. The results show that the yield strength of the cold-formed steel is significantly higher than that of the base metal; once again, it is verified that the proposed formula for the yield strength of the cold-formed steel is in good agreement with the measured value. A simplified formula for calculating the yield strength of cold-formed steel is further proposed in this paper. It has a simple form and is simple to apply. It can meet the needs of general engineering applications.