References of "Cachim, Paulo B"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailComparison between the charring rate model and the conductive model of Eurocode 5
Cachim, Paulo B.; Franssen, Jean-Marc ULg

in Fire & Materials (2009), 33

Eurocode 5, Part 1-2, presents several models for the calculation of fire resistance of timber structures. These models are based on the hypothesis that for temperatures above 300°C, wood is no longer ... [more ▼]

Eurocode 5, Part 1-2, presents several models for the calculation of fire resistance of timber structures. These models are based on the hypothesis that for temperatures above 300°C, wood is no longer able to sustain any stress, which makes the determination of the location of the 300°C isotherm decisive for the result provided by the models. In this paper, the charring rate model and the conductive model presented in Eurocode 5, part 1-2 are compared regarding the determination of the location of 300°C isotherm. The main wood parameters investigated are density, moisture content and anisotropy. the almost complete independence of the charring rate model from these parameters leads to some inconsistencies between the models. To reduce thse inconsistencies some proposals to improve the conductive and the charring rate models are presented. [less ▲]

Detailed reference viewed: 92 (2 ULg)
Full Text
Peer Reviewed
See detailNumerical modelling of timber connections under fire loading using a component model
Cachim, Paulo B.; Franssen, Jean-Marc ULg

in Fire Safety Journal (2009), 44

This paper describes a component model for dowelled timber connections under fire loading. The component model of the dowelled connection is first developed and calibrated for room temperature. The ... [more ▼]

This paper describes a component model for dowelled timber connections under fire loading. The component model of the dowelled connection is first developed and calibrated for room temperature. The constitutive relations for dowel–timber interaction are detailed and compared with experimental results. In the fire situation, a two-step approach is used: first, three-dimensional (3D) thermal analysis of the connection is performed using a conductive model with timber properties defined in Eurocode 5 in order to calculate the temperatures in the fasteners and timber; afterwards, the mechanical analysis using a component model is carried out using mechanical properties of the steel dowel and of timber adjusted to the temperatures obtained by the thermal analyses. These properties are reduced according to Eurocode 3 and Eurocode 5, respectively. Numerical simulations are presented that allow evaluation of the model behaviour and performance. Obtained results show good agreement with available experimental data, indicating that regardless of its simplicity, the component model has the capability to accurately model timber connections under fire loading [less ▲]

Detailed reference viewed: 73 (3 ULg)