Modelling the fire resistance of cross-laminated timber rib panels

IF 2 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Fire and Materials Pub Date : 2024-06-18 DOI:10.1002/fam.3226
Miriam Kleinhenz, Pedro Palma, Alar Just, Andrea Frangi
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Abstract

A cross-laminated timber rib panel is a floor system comprising cross-laminated timber plates rigidly bonded to glued-laminated timber ‘rib’ beams. A design method was developed to estimate the fire resistance of cross-laminated timber rib panels, based on a bending load-carrying model. The bending load-carrying model calculates the bending load-carrying capacity of cross-laminated timber rib panels based on simulated temperature distributions of numerical models. The numerical models were validated against the experimental results of full-scale fire resistance tests. The proposed design method is based on the overall approach of the current revised draft of EN 1995-1-2:2004, that is, prEN 1995-1-2:2023, and provides conservative estimates of the bending load-carrying capacity. The effective width is one of the most important design parameters and its influence was studied in detail. A limit value of 60% of the effective width according to prEN 1995-1-1:2023 is proposed as effective width in fire.

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交叉层压木肋板的防火性能建模
交叉层压木肋板是一种楼板系统,由交叉层压木板与胶合层压木 "肋 "梁刚性粘接而成。根据弯曲承载模型,开发了一种设计方法来估算交叉层压木肋板的耐火性能。弯曲承载模型根据数值模型的模拟温度分布计算交叉层压木材肋板的弯曲承载能力。数值模型与全尺寸耐火试验的实验结果进行了验证。所提出的设计方法基于 EN 1995-1-2:2004 现行修订草案(即 prEN 1995-1-2:2023)的总体方法,并对弯曲承载能力进行了保守估计。有效宽度是最重要的设计参数之一,对其影响进行了详细研究。根据 prEN 1995-1-1:2023,建议将有效宽度的 60% 作为火灾中的有效宽度限值。
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来源期刊
Fire and Materials
Fire and Materials 工程技术-材料科学:综合
CiteScore
4.60
自引率
5.30%
发文量
72
审稿时长
3 months
期刊介绍: Fire and Materials is an international journal for scientific and technological communications directed at the fire properties of materials and the products into which they are made. This covers all aspects of the polymer field and the end uses where polymers find application; the important developments in the fields of natural products - wood and cellulosics; non-polymeric materials - metals and ceramics; as well as the chemistry and industrial applications of fire retardant chemicals. Contributions will be particularly welcomed on heat release; properties of combustion products - smoke opacity, toxicity and corrosivity; modelling and testing.
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Issue Information Issue Information Analyzing thermal-moisture comfort and thermal protective performance of phase change materials dripped protective clothing Effect of silane coupling agent on mechanical properties, flame retardancy, and ceramifiable behavior of ceramifiable flame-retardant silicone rubber composite Enhancing fire safety and thermal performance: Wood composites with bio-based phase change materials and fire retardants for building applications
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