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- FIRE AND INDUSTRIAL SAFETY
- Fire Tests And Calculation Of The Fire Resistance Limit Of Structures Made Of Laminated Veneer Lumber
- UDC 699.81:624.011.14
doi: 10.33622/0869-7019.2022.04.89-94
Klim A. USTIMENKO, klim-ldk@mail.ru
Pavel N. SMIRNOV, spair23@list.ru
Research Institute of Building Constructions (TSNIISK) named after V. A. Koucherenko, Research Center of Construction, 2-ya Institutskaya ul., 6, Moscow 109428, Russian Federation
Abstract. The purpose of the research work was to measure the parameters of the burning of wood glued from veneer and to make additions to the calculation method for determining the fire resistance limit of wooden structures according to the standard. The results of experimental studies of the tensile strength and modulus of elasticity of such wood when bending along the edge and formation, as well as the rate of charring, depending on the characteristics of the material, are presented. The experimental data obtained made it possible to find the main patterns used in the calculation method for determining the limits of fire resistance of wooden structures: the time to reach the temperature at which charring begins; the rate of charring depending on the wood type of veneer and the structure of the material. The results of experimental studies of the limits of fire resistance of plates and bendable core elements (beams) made of wood glued from veneer are given. Comparison of the results of determining the fire resistance limit of structures made of laminated veneer lumber by the calculation method with the results of experimental studies showed their high convergence. According to the results of the research, proposals have been formulated in the regulatory document on the calculation method for determining the limits of fire resistance of structures made of wood glued from veneer.
Keywords: wooden structures, laminated veneer lumber, fire tests, fire resistance limit, charring, standard fire temperature - REFERENCES
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