石膏基防火材料对碎裂木承重构件老化的影响分析

IF 0.7 4区农林科学 Q4 MATERIALS SCIENCE, PAPER & WOOD

Drvna Industrija Pub Date : 2023-09-29 DOI:10.5552/drvind.2023.0091

Marie Rusinová, Miloš Lavický, Miloš Kalousek, Martin Sedlmajer

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引用次数: 0

摘要

通过对木结构构件表层炭化程度的测定，评价了承重木结构的耐火性能。电阻的大小取决于炭化的开始和过程;这些基本参数受到盖结构以及各个轴承元件之间的空腔填料的影响。本文重点分析了基于石膏板的防火盖结构，即石膏板和石膏板。当前分析的基础是基于火罩下承重木材元件的着火温度，包括在具有模拟火灾设置的标准时间-温度曲线的火炉中对试件进行的实验火灾测试结果。此外，还对结构的温度行为进行了数值分析，以便将实验结果与数学分析结果进行比较。最后，分析了覆盖层对结构耐火性能的影响。

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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Analiza utjecaja protupožarne obloge na bazi gipsa na pougljenje drvenih nosivih elemenata

Fire resistance of load-bearing wooden structures is evaluated by the charring of surface layers of wooden bearing elements. The degree of resistance is determined by the onset and course of charring; these basic parameters are affected by the cover structure as well as by cavity fillers between the individual bearing elements. This article focuses on analysing the structure of fire protection covers based on gypsum boards, namely gypsum plasterboards and gypsum fibreboards. The foundation for the current analysis, based on the ignition temperature of the load-bearing timber element under the fire cover, includes the results of experimental fire tests carried out on test specimens in a fire furnace with a standard time-temperature curve set to simulate a fire. In addition, a numerical analysis of the temperature behaviour in the structure was carried out in order to compare the experimental results with the values obtained by mathematical analysis. Finally, the influence of the cover layers on the resulting fire resistance of the analysed structures is evaluated.

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来源期刊

Drvna Industrija MATERIALS SCIENCE, PAPER & WOOD-

CiteScore

1.80

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： "Drvna industrija" ("Wood Industry") journal publishes original scientific and review papers, short notes, professional papers, conference papers, reports, professional information, bibliographical and survey articles and general notes relating to the forestry exploitation, biology, chemistry, physics and technology of wood, pulp and paper and wood components, including production, management and marketing aspects in the woodworking industry.