高强度等边角钢轴心受压局部稳定的试验研究

EXPERIMENTAL STUDY ON THE LOCAL BUCKLING OF HIGH STRENGTH STEEL EQUAL ANGLES UNDER AXIAL COMPRESSION

该文针对高强度等边角钢的局部稳定受力性能,对Q420热轧等边角钢短柱进行了轴心受压试验。根据试验结果,该文对角钢肢的弹性嵌固系数的取值进行了研究,并与我国、美国和欧洲钢结构设计规范的相应设计方法和计算公式进行了对比分析。结果表明:我国钢结构设计规范对于角钢肢的弹性嵌固系数的取值是合理的;美国和欧洲钢结构设计规范的计算结果较为接近,且均低于试验结果,其设计方法安全合理。

Aiming at the local buckling behavior of high strength steel equal angles,an axial compression experiment of Q420 hot-rolled steel equal angle stub columns is conducted.Based on the test results,the value of the elastic clamping coefficient of the steel angle leg is studied,and the test results are compared with the corresponding design methods and calculation formulae in Chinese,American and European steel structure design codes.The research work shows that the value of the elastic clamping coefficient of the steel angle leg in the Chinese steel structure design code is reasonable;the calculation results of the American and European steel structure design codes are close,which are both less than the test results,and the design methods are safe and reasonable.