初始缺陷对钢—混组合梁抗火性能影响研究综述

Review on the effect of initial defects on the fire resistance of steel-concrete composite beams

钢—混组合梁在高层建筑和大跨度结构中得到良好的应用,尤其是近年来预应力技术的成熟,预应力组合梁具有较为广泛的应用前景和空间,而初始缺陷对钢—混组合梁有一定影响。系统阐述了初始缺陷对普通组合梁和预应力组合梁特性影响研究的现状,并指出今后在高温下初始缺陷对钢—混凝土组合梁性能影响方面值得进一步研究的方向。

Steel concrete composite beams are well used in high-rise buildings and long-span structures.Especially the maturity of prestressing technology in recent years,prestressed composite beams have a wide range of application prospects and spaces.The initial defect has a certain effect on the steel-concrete composite beam.This paper systematically expounds the influence of initial defects on the characteristics of ordinary composite beams and prestressed composite beams,the research status,it also refers to the problems that are worthy of further study on the impact of initial defects on the performance of steel-concrete composite beams.