Performance Evaluation of Cable Shaft Fireproof Sealing System in High-Rise Buildings: A Comparative Test Method

Fire Pub Date : 2024-03-21 DOI:10.3390/fire7030102
Bizhen Zhang, Shengwen Shu, Zhicong Zheng, Bo Qu, Xin Li, Xingyao Xiang, Shuai Xia
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Abstract

The effectiveness of fireproof sealing systems in preventing the spread of fire in high-rise building cable shafts relies on the properties of various sealing materials and the construction process. Therefore, a comprehensive evaluation is necessary. The authors of this paper propose a comparative test method based on an entity test platform for a performance evaluation of cable shaft fireproof sealing systems in high-rise buildings. The test platform measures changes in temperature, humidity, and smoke mass during fire tests to compare the performance of four sets of fireproof sealing systems in terms of thermal insulation, smoke sealing capacity, and overall integrity. In addition, a fire dynamics simulation (FDS) of fireproof sealing systems was carried out on the entity test platform, and the sealing failure process in the case of cracking in the fireproof sealing system was revealed. The simulation results for the temperature trends in the lower space align with the fire test results. Furthermore, as the gap size increases, the diffusion of smoke and flame accelerates. Consequently, the performance of cable shaft fireproof sealing systems depends not only on the sealing material but also on the construction process.
高层建筑电缆井防火密封系统的性能评估:比较试验方法
防火密封系统防止火灾在高层建筑电缆井蔓延的效果取决于各种密封材料的特性和施工工艺。因此,有必要进行综合评估。本文作者提出了一种基于实体测试平台的比较测试方法,用于高层建筑电缆井防火密封系统的性能评估。该测试平台可测量火灾测试过程中温度、湿度和烟气质量的变化,从而比较四套防火密封系统在隔热、烟气密封能力和整体完整性方面的性能。此外,还在实体试验平台上对防火密封系统进行了火灾动力学模拟(FDS),揭示了防火密封系统开裂时的密封失效过程。下部空间温度趋势的模拟结果与防火测试结果一致。此外,随着间隙的增大,烟雾和火焰的扩散速度也会加快。因此,电缆井防火密封系统的性能不仅取决于密封材料,还取决于施工工艺。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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