Experimental Studies of Compressed-Bendable Elements of Composite Cross-Section on Screwed-in Rods

An analysis of scientific works of domestic scientists in the field of the use of metal rods in wooden structures was carried out. The results of experimental and theoretical studies of a prefabricated structural element made of solid wood – beams with a cross-section of 150150 mm connected by screws in height to a rod of rectilinear or broken section with a height of 450 mm are presented. These beams can then be enlarged and used as edges of flat or spatial structures for covering buildings for various purposes. The structures do not require high technologies for processing materials and gluing; they can be manufactured even under construction conditions, which is advisable for construction in areas of development, for example, in the Far North. Methods for testing composite structures on inclined screwed-in rods under short-term loads are described. The features of their structure and behavior under static loads in limit states are studied. The nature of the destruction of samples is described. Weaknesses of the designed structure have been identified. The hypothesis about the possibility of using the proposed structures both for temporary buildings and for the construction of capital buildings is confirmed. Conclusions are drawn on the further study of this type of structures.

A.A. KLYUKIN, Senior lecturer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

1. Linkov V.I. Constructions based on composite wooden elements with connections on inclined metal rods without the use of glue. Promyshlennoe i grazhdanskoe stroitel’stvo. 2012. No. 11, pp. 29–31. (In Russian).
2. Linkov V.I. Evaluation of the long-term strength of the joints of wooden elements on inclined metal rods without the use of glue. Promyshlennoe i grazhdanskoe stroitel’stvo. 2011. No. 3, pp. 25–28. (In Russian).
3. Linkov V.I. Modeling of the work of composite wooden beams on malleable bonds using the theory of composite rods A.R. Rzhanitsyn. Stroitel’naya mekhanika i raschet sooruzhenii. 2011. No. 5, pp. 30–35. (In Russian).
4. Linkov V.I. Bearing capacity and deformability of joints on inclined rods with combined washers. Promyshlennoe i grazhdanskoe stroitel’stvo. 2016. No. 9, pp. 40–43. (In Russian).
5. Turkovsky S.B., Pogoreltsev A.A., Preobrazhenskaya I.P. Kleenye derevyannye konstruktsii s uzlami na vkleennykh sterzhnyakh v sovremennom stroitel’stve (sistema TsNIISK) [Glued wooden structures with nodes on glued rods in modern construction (­TSNIISK system)]. Moscow: RIF “Stroymaterialy”. 2013. 308 p.
6. Anatoly Naichuk, Alexander Pogoreltsev, Igor Demchuk, Andrey Ivanyuk, Svetlana Roshchina. Rigid connection of structures made of bent glued beams using inclined glued rods. Proceedings of MPCPE. Lecture Notes in Civil Engineering. 2021. Vol. 182. https://doi.org/10.1007/978-3-030-85236-8_45
7. Alexander Pogoreltsev, Stanislav Turkovsky, Vladimir Stoyanov. Rigid joints on glued-in rods of bending and compression bending elements of large-span laminated timber structures. World Conference on Timber Engineering. Oslo. 2023, pp. 4201–4208.
8. Naichuk A.Ya., Babaev M.V. On the issue of assessing the bearing capacity of steel screw rods screwed at an angle to wood fibers. Promyshlennoe i grazhdanskoe stroitel’stvo. 2010. No. 1, pp. 21–23. (In Russian).
9. Zhadanov V.I., Arkaev M.A., Rozhkov A.F. Taking into account the twisted shape of the cruciform nagel in the calculation of beam wooden structures when they are reinforced by increasing the cross section. Stroitel’naya mekhanika i raschet sooruzheniy. 2016. No. 6, pp. 55–59. (In Russian).
10. Zhadanov V.I., Arkaev M.A., Kotlov V.G. Experimental studies of wooden beams reinforced with twisted cruciform rods. Promyshlennoe i grazhdanskoe stroitel’stvo. 2017. No. 11, pp. 5–11. (In Russian).
11. Zhadanov V.I., Arkaev M.A., Stolpovsky G.A. Reinforcement of wooden structures using twisted cruciform rods. Promyshlennoe i grazhdanskoe stroitel’stvo. 2017. No. 5, pp. 25–31. (In Russian).
12. Pyatikrestovsky K.P., Khunagov H.S. Nonlinear deformations of statically indeterminate wooden structures. Izvestiya of higher educational institutions. Construction. 2013. No. 11–12, pp. 21–30. (In Russian).
13. Pyatikrestovsky K.P., Travush V.I., Pogoreltsev A.A., Klyukin A.A. Development of solid wood structures for infrastructure facilities. Mezhdunarodnyi zhurnal po raschetu grazhdanskikh i stroitel’nykh konstruktsii. 2018. Vol. 14. No. 1, pp. 145–154. (In Russian).