| 引用本文: | 万夫雄,郑文忠.无机胶粘贴碳纤维布加固板防火涂层厚度取值[J].哈尔滨工业大学学报,2012,44(2):11.DOI:10.11918/j.issn.0367-6234.2012.02.003 |
| WAN Fu-xiong,ZHENG Wen-zhong.Thickness value of fireproof coating for slabs strengthened with Carbon Fiber Sheet bonded with an inorganic adhesive[J].Journal of Harbin Institute of Technology,2012,44(2):11.DOI:10.11918/j.issn.0367-6234.2012.02.003 |
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| 摘要: |
| 为确保火灾下用无机胶粘贴的碳纤维布能正常发挥加固作用,保证结构安全,需要选用一定厚度的厚型防火涂料作为碳纤维布的防火保护层.基于对加固板高温变形限制的考虑,采用ABAQUS对其高温变形进行试算,提出以板底温度415℃作为控制温度计算涂料厚度的原则.采用ABAQUS对加固板温度场进行分析,表明涂料厚度、导热系数以及受火时间是影响板底温度的主要因素,因而决定涂料保护层厚度的关键因素为导热系数和受火时间.在此基础上,按耐火时间和涂料导热系数的不同,分涂料品种并考虑相应构造要求的基础上,给出基于温度控制的防火涂料保护层厚度取值建议. |
| 关键词: 无机胶 碳纤维布 加固板 防火涂料 防火保护 |
| DOI：10.11918/j.issn.0367-6234.2012.02.003 |
| 分类号:TU545 |
| 基金项目:教育部长江学者奖励计划资助项目(2009-37),教育部博士点基金资助项目(20092302110046) |
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| Thickness value of fireproof coating for slabs strengthened with Carbon Fiber Sheet bonded with an inorganic adhesive |
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WAN Fu-xiong1,2, ZHENG Wen-zhong1
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1.School of Civil Engineering,Harbin Institute of Technology,150090 Harbin,China;2.Architectural and Civil Engineering Institute,Kunming University of Science and Technology,650000 Kunming,China)
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| Abstract: |
| For keeping strengthening role of Carbon Fiber Sheet(CFS) bonded with an inorganic adhesive to insure fire safe of structure,thick-typed fireproof coating is needed for protecting CFS.Considering deformation limit of strengthened slabs in fire,temperature on bottom surface of slabs is limited to 415 ℃ by trial calculation of deformation by ABAQUS.By analysis of temperature field of strengthened slabs by ABAQUS,fireproof coating thickness,heat conductivity coefficient and fire duration are the main factors affecting temperature on bottom surface of strengthened slabs,so key factors affecting fireproof coating thickness are heat conductivity coefficient and fire duration.Based on that,in terms of fire endurance and thermal conductivity coefficient of coating,and considering actual construction demand,advised values of fireproof coating thickness are proposed in terms of different type of coating. |
| Key words: inorganic adhesive Carbon Fiber Sheet(CFS) strengthened slabs fireproof coating fire protection |
