Fire resistance of timber-concrete composite slabs : a simplified method
ID Ogrin, Anita (Author), ID Hozjan, Tomaž (Author)

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The paper presents a simplified method for calculation of resistance of a TCC slab in fire conditions. Within the method the tensile and the compressive failure criteria in the outermost fibres of the cross-section are checked. The influence of the fire is applied through one-dimensional charring of the timber part of the cross-section in accordance with current standards on reduction of properties of materials. The concrete-timber connection is assumed to be ideal during the determination of resistant moment of the TCC cross-section. On the other hand, the calculation of the deflection of the TCC slab is conducted with the reduction of the connections rigidity. The ineffective zone of the timber as well as the cracked tensile zone of concrete part do not contribute to the effective stiffness of the TCC slab. The method is validated against the results of full sized fire tests of one way spanning TCC slabs form literature. Calculated and experimentally determined midspan deflections and failure times of the TCC slabs are compared and their considerable agreement is observed. Due to its convenience and accuracy, the present simplified method represents a useful tool for designers of TCC structures in fire conditions.

Keywords:civil engineering, timber-concrete composite, slabs, fire, simplified method, timber-concrete composite slabs, effective stiffness, laminated veneer lumber
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publication status:Published
Publication version:Version of Record
Number of pages:15 str.
Numbering:Vol. 53, iss. 4, art. 106
PID:20.500.12556/RUL-121005 This link opens in a new window
ISSN on article:1359-5997
DOI:10.1617/s11527-020-01540-6 This link opens in a new window
COBISS.SI-ID:27526659 This link opens in a new window
Publication date in RUL:28.09.2020
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Record is a part of a journal

Title:Materials and structures
Shortened title:Mat. struct.
Publisher:E. & F. N. Spon, RILEM Publications
COBISS.SI-ID:18240005 This link opens in a new window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:20.08.2020

Secondary language

Keywords:gradbeništvo, kompozitne konstrukcije iz lesa in betona, plošče, požari, poenostavljena metoda, efektivna togost, LVL, sovprežne plošče les-beton, slojnati furnirni les


Funder:ARRS - Slovenian Research Agency
Project number:P2-0260
Name:Mehanika konstrukcij

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