Research on overall buckling behavior of superior high-performance steel columns
Ban Huiyong1,2 Zhao Pingyu1,2 Zhou Guohao1,2 Shi Yongjiu1,2 Liu Kun3
1. School of Civil Engineering, Tsinghua University, Beijing 100084, China；
2. Key Laboratory of Civil Engineering Safety and Durability of the Ministry of Education, Tsinghua University, Beijing 100084, China；
3. Shougang Group Research Institute of Technology, Beijing 100041, China
Abstract：In order to improve the resistance of modern steel structures against various disasters, a new generation of superior high-performance(SHP) steel, combining with high strength, high ductility, corrosion resistance and fire resistance, has been developed. To investigate the overall buckling behavior of such superior high-performance steel welded I-section axial compression members, experiments were carried out on six specimens and the bearing capacity and failure modes of the specimens were identified. By comparing with the column curves in the national standard GB 50017—2017, the column curve type for designing such members was recommended. Furthermore, finite element (FE) models were established according to the conditions in the experiments and the accuracy and reliability of the models were validated. Then parametric study was carried out to analyse the effects of initial imperfections, residual stresses, material strengths and constitutive models on the overall buckling behavior. Finally, based on the analysis results FE simulation, updated column curves for the superior high-performance steel welded I-section axial compression members were proposed. The research outcomes can provide reference for practical application of this superior high-performance steel.
班慧勇 赵平宇 周国浩 石永久 刘锟. 复合型高性能钢材轴压构件整体稳定性能研究[J]. 土木工程学报, 2021, 54(9): 39-55.
Ban Huiyong Zhao Pingyu Zhou Guohao Shi Yongjiu Liu Kun. Research on overall buckling behavior of superior high-performance steel columns. 土木工程学报, 2021, 54(9): 39-55.
