Abstract This paper summarizes the latest technical and scientific progresses on steel-concrete composite structures exposed to fire, presenting the recent research carried out on this subject and the progress of the design codes. In particular, this review focuses on concrete-filled steel tubular columns and slim-floor beams, topics where the authors have carried out extensive research during the last years. The more recent experimental and numerical studies performed by the authors as well as those available in the literature are presented, along with applications where these composite elements have been used in practice. The use of advanced materials, such as high strength steel and concrete, stainless steel, lightweight concrete or geopolymer concrete is considered for the enhancement of the fire behaviour of concrete-filled steel tubular columns and slim-floor beams. Finally, the currently available design methods for the calculation of isolated members at elevated temperatures are reviewed and the recent progress of the code provisions for the fire design of these composite elements is presented.

中文翻译：

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CFST 柱和薄地板梁的最新发展和防火设计规定

摘要 本文综述了钢-混凝土组合结构火灾暴露的最新技术和科学进展，介绍了该课题的最新研究和设计规范的进展。特别是，这篇综述重点关注钢管混凝土柱和薄地板梁，作者在过去几年中对这些主题进行了广泛的研究。介绍了作者最近进行的实验和数值研究以及文献中的那些研究，以及这些复合元素在实践中的应用。采用先进材料，如高强度钢材和混凝土、不锈钢、轻质混凝土或地质聚合物混凝土被考虑用于增强钢管混凝土柱和细地板梁的防火性能。最后，回顾了目前可用的高温下隔离构件计算的设计方法，并介绍了这些复合元件防火设计规范规定的最新进展。