薄壁钢板局部屈曲关键问题研究进展

Research progress on key issues of local buckling of thin-walled steel plate

钢结构以及钢-混凝土组合结构由于其强度高、耗能能力好、施工方便等优异性能,被广泛应用于工程结构中。然而,随着高强度钢材的应用,薄壁钢板呈现薄壁化、宽厚比随着构件截面尺寸的增大而不断增大的趋势,由于工程结构及荷载的复杂性等因素,钢板过早发生局部屈曲的风险不断加大,薄壁钢板的局部屈曲问题凸显,亟待开展系统性深入研究。对薄壁钢板局部屈曲研究的进展进行了概述,分析总结了现有试验研究和理论研究方面存在的局限性,详细介绍了笔者团队近年来聚焦于薄壁钢板局部屈曲关键问题开展的一系列研究工作及成果。

Steel structures and steel-concrete composite structures are widely utilized in engineering structures due to their excellent properties such as high strength,good energy absorption capacity,and convenient construction.However,with the application of high-strength steel,thin-walled steel plates exhibit a trend of thinning,and the width-thickness ratios increase with the enlargement of component cross-sectional dimensions.Due to the complexity of engineering structures and loads,the risk of premature local buckling of steel plates is continuously increasing.The problem of local buckling of thin-walled steel plates is prominent and urgently requires systematic and in-depth research.An overview of the progress in the study of local buckling of thin-walled steel plates was provided,the limitations of existing experimental and theoretical research was analyzed and summarized,and a series of research works and achievements focusing on the critical issues of local buckling of thin-walled steel plates was conducted by the author’s research team in recent years.