Existing steel structure steel mechanical property evaluation method based on small punching test

• Main Authors: QIN XINYU, HUANG BINGSHENG, GE QIAOQIAO, ZHENG LEIGANG, FU ZHENG, WANG SHUNHUA
• Format: Patent
• Language: Chinese; English
• Published: 30.01.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for evaluating mechanical properties of existing steel structure steel based on a small punching test, which comprises the following steps of: sampling the existing steel structure steel on site, processing the existing steel structure steel into samples with thicknesses of 0.5 +/-0.01 mm and 0.6 +/-0.01 mm, and then carrying out the small punching test to obtain a yield load, a maximum load and a maximum axial displacement on a small punching test load-displacement curve; and then combining a formula to directly obtain the yield strength, tensile strength and elongation of the sample steel under the corresponding thickness. The method not only can directly evaluate multiple mechanical properties of the existing steel structure steel according to the calculated result, but also has the advantages of small structural damage caused by sampling, simple evaluation method, high precision and the like. 本发明公开了基于小冲孔试验的既有钢结构钢材力学性能评定方法，其通过对既有钢结构钢材的现场取样，并加工成0.5±0.01mm和0.6±0.01mm厚度的试样后进行小