Experimental and numerical analysis on fire behaviour of loaded cross-laminated timber panels

Wang, Yuexiang; Zeng, Jin; Fang, Mei; Liao, Jianan; Li, Weibin

doi:10.1177/1369433219864459

Cited by 19 publications

(8 citation statements)

References 20 publications

(26 reference statements)

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“…Regarding the fire safety of timber structures, the current design practice mostly follows Eurocode 5 (EC5), 1 which estimates the load‐bearing capacity of single members with respect to the effective section as the char layer is nearly zero load resistance. Following this design principle, mass timber structures using engineered timber such as Glued Laminated (Glulam) timber and Cross Laminated Timber (CLT) were vastly implemented in timber building construction, and investigations were conducted regarding their fire performance 2–6 . Correspondingly, modelling the fire behaviour of modern timber structural members is of great interest but facing considerable challenges.…”

Section: Introductionmentioning

confidence: 99%

“…Fragiacomo et al 2 carried out bending tests at ambient temperature and large‐scale furnace fire tests under standard fire conditions on CLT panels (5600 mm × 600 mm × 150 mm), which showed the fracture‐dominated failure of CLT beam and rapid‐growing deflection after 90 min of exposure. Wang et al 3 tested a series of CLT panels of a size 2200 × 420 × 105 mm, which recorded the internal temperature distribution and mid‐span deflection of the timber panel during the standard fire exposure. Bending tests and fire tests were carried out by Dârmon and Lalu 4 on Glulam beams (3500 × 180 × 440 mm), which showed the temperature evolution of a Glulam beam subjected to three‐side fire exposure and the fire behaviour of the beam.…”

Section: Introductionmentioning

confidence: 99%

“…Following this design principle, mass timber structures using engineered timber such as Glued Laminated (Glulam) timber and Cross Laminated Timber (CLT) were vastly implemented in timber building construction, and investigations were conducted regarding their fire performance. [2][3][4][5][6] Correspondingly, modelling the fire behaviour of modern timber structural members is of great interest but facing considerable challenges. The charring behaviour of timber sections in a fire is complex and involves multi-phase physical changes and chemical reactions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

OpenSees development for modelling timber structural members subjected to realistic fire impact

et al. 2022

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Timber buildings have been preferred in many regions for the sustainable nature of timber material. Although engineered timber products become promising alternates to traditional construction materials, the fire safety of timber buildings remains a key barrier to wider use. Currently, the design of timber structures mostly adopts the Eurocode 5 approach, which estimates the heat transfer or char depth under the premise of standard fire exposure. To investigate the behaviour of timber structural members in the context of realistic fire action in compartments, appropriate models for different stages of numerical simulation are needed. A series of development have now been conducted in the open‐source platform OpenSees, which enables modelling the heat transfer of timber sections in non‐standard fire scenarios and thermo‐mechanical analysis model using either beam elements or shell elements for various timber structural members. Corresponding thermal actions are developed to deal with timber slabs in fire or timber beams subjected to three‐side fire exposure. Tests on cross‐laminated timber beams at ambient temperature and under fire exposure are modelled to validate the developed capabilities, which is followed by modelling a glued laminated timber beam heated by furnace. In the end, a timber‐concrete composite slab is modelled using the fire impact from a Computational Fluid Dynamics model, which demonstrates the current vision of modelling timber structures in fire and OpenSees for fire is committed to providing such an open‐source research platform to support further modelling work.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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OpenSees development for modelling timber structural members subjected to realistic fire impact

et al. 2022

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“…As a kind of new structural material, there are many advantages for CLT. When compared with light wood-based construction, CLT constructions have better performance in fire including higher duration of fire resistance and greater ultimate load [ 3 , 4 ]. When compared with concrete constructions, CLT constructions have a lower thermal conductivity coefficient with the same thickness [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Calculation of Stability Coefficients of Cross-Laminated Timber Axial Compression Member

Gong

Ren

et al. 2021

Polymers

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Cross-laminated timber (CLT) elements are becoming increasingly popular in multi-storey timber-based structures, which have long been built in many different countries. Various challenges are connected with constructions of this type. One such challenge is that of stabilizing the structure against vertical loads. However, the calculations of the stability bearing capacity of the CLT members in axial compression in the structural design remains unsolved in China. This study aims to determine the stability bearing capacity of the CLT members in axial compression and to propose the calculation method of the stability coefficient. First, the stability coefficient calculation theories in different national standards were analyzed, and then the stability bearing capacity of CLT elements with four slenderness ratios was investigated. Finally, based on the stability coefficient calculation formulae in the GB 50005-2017 standard and the regression method, the calculation method of the stability coefficient for CLT elements was proposed, and the values of the material parameters were determined. The result shows that the average deviation between fitting curve and calculated results of European and American standard is 5.43% and 3.73%, respectively, and the average deviation between the fitting curve and the actual test results was 8.15%. The stability coefficients calculation formulae could be used to predict the stability coefficients of CLT specimens with different slenderness ratios well.

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“…Frangi et al presented the experimental and numerical analyses of the fire behavior of CLT panels, and they further compared the fire behavior of CLT panels with homogeneous timber panels [14,15]. Experiment was performed, and 3D finite element model was developed to predict the fire behavior of loaded CLT panels [16]. e performance of CLT and hybrid structure was presented [17,18].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Numerical Calculation Model for Static Behavior Simulation of Cross-Laminated Timber Plates under Thermal Environment

Hou

Zhu

et al. 2021

Mathematical Problems in Engineering

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Cross-laminated timber (CLT) is well known as an interesting technical and economical product for modern wood structures. The use of CLT for modern construction industry has become increasingly popular in particular for residential timber buildings. Analyzing the CLT behavior in high thermal environment has attracted scholars’ attention. Thermal environment greatly influences the CLT properties and load bearing capacity of CLT, and the investigation can form the basis for predicting the structural response of such CLT-based structures. In the present work, the finite element method (FEM) is employed to analyze the thermal influence on the deformation of CLT. Furthermore, several factors were taken into consideration, including board layer number, hole conformation, and hole position, respectively. In order to determine the influence, several numerical models for different calculation were established. The calculation process was validated by comparing with published data. The performance is quantified by demonstrating the temperature distribution and structural deformation.

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Experimental and numerical analysis on fire behaviour of loaded cross-laminated timber panels

Cited by 19 publications

References 20 publications

OpenSees development for modelling timber structural members subjected to realistic fire impact

OpenSees development for modelling timber structural members subjected to realistic fire impact

Analysis and Calculation of Stability Coefficients of Cross-Laminated Timber Axial Compression Member

Three-Dimensional Numerical Calculation Model for Static Behavior Simulation of Cross-Laminated Timber Plates under Thermal Environment

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