Fire resistance of wooden cellular slabs with rectangular perforations
Conference Paper
Overview
Research
Additional Document Info
View All
Overview
abstract
This paper presents a numerical approach with finite element method in order to predict both
the behaviour and the performance of the wooden slabs with rectangular perforations under fire
exposure. These typical constructions have good sound absorption, thermal insulation and
relevant architectonic features, they are used in many civil engineering applications. These
slabs are normally installed at lower level in building constructions essentially due to an easy
maintenance requisite. Depending on the installation requirement, the perforated wooden slabs
could have an additional insulation material inside the cavities. The proposed numerical model
could be applied to different design constructive slab solutions. For this purpose a 3D numerical
simulation was conducted with particular attention to the wood thermal properties variation with
temperature. The numerical results were compared with those obtained experimentally in
laboratory, for two wooden slabs. The fire resistance (performance criteria related to the
insulation (I) and integrity (E)) was evaluated, as well as the effect of rectangular perforations
into the residual cross section of the slab. This study was conducted in accordance with
European Standard EN 1365-2 and using a fire resistance furnace which complies the
requirements of EN 1363-1 in the experimental test.
This paper presents a numerical approach with finite element method in order to predict both the behaviour and the performance of the wooden slabs with rectangular perforations under fire exposure. These typical constructions have good sound absorption, thermal insulation and relevant architectonic features, they are used in many civil engineering applications as: concert and conference halls, classrooms, nurseries, airports, hotels, shopping, universities, and many other private and public buildings. These slabs are normally installed at lower level in building constructions essentially due to an easy maintenance requisite. Depending on the installation requirement, the perforated wooden slabs could have an additional insulation material inside the cavities [1]. The proposed numerical model could be applied to different design constructive slab solutions. For this purpose a 3D numerical simulation was conducted with particular attention to the wood thermal properties variation with temperature [2]. The numerical results were compared with those obtained experimentally in laboratory, for two wooden slabs. The fire resistance (performance criteria related to the insulation (I) and integrity (E)) was evaluated, as well as the effect of rectangular perforations into the residual cross section of the slab. This study was conducted in accordance with European Standard EN 1365-2 [3] and using a fire resistance furnace which complies the requirements of EN 1363-1 [4] in the experimental test.
