The paper presents the development of an innovative cost-effective fire protection system for steel columns, which is quick and easy to install and to dismantle. In terms of assembly, this protection is designed to be a plug-and-play system, which is made of two U-shaped half-protections that encapsulate a column. They are composed of high-density rock wool boards arranged in U-shape steel sheets presenting a system of claws to ensure their connection. Small-scale experimental tests were performed to evaluate the insulating efficiency of the system and the thermal behaviour of the connection claws. Numerical models were then developed with the finite elements software ABAQUS and SAFIR and were successively calibrated based on experimental results. Subsequently, full-scale experimental tests were performed according to the European standard of regulation EN13381-4 and the results certified that the fire protection is effective for steel profiles with section factor ranging from 42 to 103 m⁻¹ to maintain the steel temperature below 550 °C when exposed to a standard fire for 120 min. Finally, a cost analysis was performed to attest the competitivity of the plug-and-play fire protection system by considering direct and indirect costs.

本文介绍了一种创新，具有成本效益的钢柱防火系统的开发，该系统安装快速，易于拆卸。在组装方面，该保护装置设计为即插即用系统，该系统由两个U型半保护装置构成，这些保护装置将一根色谱柱包裹起来。它们由高密度岩棉板组成，这些岩棉板以U形钢板排列，并带有爪形系统以确保它们的连接。进行了小型实验测试，以评估系统的绝缘效率和连接爪的热性能。然后使用有限元软件ABAQUS和SAFIR开发了数值模型，并根据实验结果对其进行了逐步校准。后来，^-1暴露在标准火中120分钟时，钢的温度保持在550°C以下。最后，通过考虑直接和间接成本，进行了成本分析，以证明即插即用消防系统的竞争力。