基于气凝胶复合材料的缆索防火隔热体系抗火性能研究  

Study on Fire Resistance Performance of Cable Fire Insulation System on the Basis of Aerogel Composite

作　　者：闵亮 施方长 贾帅德 康大伟 孟庆坤[2] 戚继球[2] 康壮苏[1,2] MIN Liang;SHI Fangchang;JIA Shuaide;KANG Dawei;MENG Qingkun;QI Jiqiu;KANG Zhuangsu(Jiangsu CUMT Dazheng Surface Engineering Technology Co.,Ltd.;School of Materials Science and Physics,China University of Mining and Technology)

机构地区：[1]江苏中矿大正表面工程技术有限公司 [2]中国矿业大学材料与物理学院

出　　处：《广东建材》2024年第12期5-8,共4页Guangdong Building Materials

基　　金：徐州市科技成果转化项目(KC22441).

摘　　要：随交通流量增加,由危化品车辆等造成的火灾风险持续增加,对桥梁缆索体系进行防火设计成为桥梁安全运行的重要环节。本文通过碳氢(HC)火灾燃烧试验和有限元模拟手段,研究高硅氧纤维气凝胶复合毡的抗火隔热性能。结果表明,气凝胶复合毡具有良好的高温稳定性和隔热性能,当气凝胶毡达到10mm后时,在HC火灾中拉索钢丝表面温度在89min内不超过300℃。在试验数据的基础上,通过有限元模型明确了不同防护时间对气凝胶毡厚度的要求。本文的工作表明高硅氧纤维气凝胶复材毡在桥梁防火领域具有良好的应用前景。With the increase in traffic volume,particularly from hazardous materials vehicles,the fire risk to bridge cable systems escalates,making fire-resistant design a critical component of bridge safety.This study examines the fire resistance and thermal insulation properties of high-silica fiber aerogel composite mats using hydrocarbon(HC)fire combustion tests and finite element analysis.The findings show that aerogel composite mats exhibit excellent high-temperature stability and insulation performance.When the aerogel mat is 10mm thick,the cable wire surface temperature does not exceed 300°C within 89 minutes of HC fire exposure.Finite element models based on experimental data specify the aerogel mat thickness required for different protection durations.This research highlights the potential of high-silica fiber aerogel composite mats in bridge fire protection applications.

关 键 词：高硅氧纤维气凝胶复合毡 燃烧实验 有限元模拟 碳氢火灾 

分 类 号：U447[建筑科学—桥梁与隧道工程]