Volume 2, Issue 1, June 2018, Page: 16-21
Wooden I-Beams Made of Round Timber with a Core Rot
Viktor Yevgenyevitch Byzov, Department of Metal and Wooden Designs, St. Petersburg State University of Architecture and Civil Engineering, St. Petersburg, Russia
Received: Jul. 31, 2018;       Accepted: Aug. 22, 2018;       Published: Oct. 6, 2018
DOI: 10.11648/j.ajcbm.20180201.13      View  602      Downloads  86
Abstract
Round timber with core rot was not used in the production of sawn timber for load-bearing building structures. The purpose of this work is the researches of a possibility of receiving wooden beams from round timber with a core rot. The wooden I-beam made of angular elements of the received their round forest products with decay was chosen as the object being studied. The design scheme for determining strength and deflections of the beam is a statically determinate hinged beam, loaded with a uniformly distributed load. The design spacing of the structure is assumed to be 6 meters. Under the action of a load equal to 1.5 kN/m, the beam is exposed to stress-strain state of transverse bending. A method for manufacturing I-beams from corner elements obtained as a result of cutting round logs with core rot is proposed. It has established that the calculated strength characteristics of I-beams produced according to the proposed technology may resist operational loads. Rated and tangential stresses arising from application of loads do not exceed the permissible values. Deflection of a beam does not exceed allowable deflection values. The use of round timber with core rot increases resources of wood for construction.
Keywords
I-Beam, Low-Grade Forest Products, Angle Bar Elements, Strength Characteristics of Wood
To cite this article
Viktor Yevgenyevitch Byzov, Wooden I-Beams Made of Round Timber with a Core Rot, American Journal of Construction and Building Materials. Vol. 2, No. 1, 2018, pp. 16-21. doi: 10.11648/j.ajcbm.20180201.13
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reference
[1]
N. A. Vorontchova, N. V. Filatov, Ye. G. Shestopalov, “Use of glued plywood elements with perforated walls in the construction of low wooden buildings”, vol. 80, Vologda readings, 2012, pp. 74-76.
[2]
P. Litovtchenko, V. Moloshniy, E. Elkiyna, S. Litovtchenko, “Experimental study of a wooden I-beam”, vol. 11B, MOTROL, 2009, pp. 145-151.
[3]
A. V. Sintshov, V. P. Sintshov. “Strength and deformability of a composite wooden beam with a wall of oriented particile board”, vol. 50, Building and technogenic security, 2014, pp. 152-158.
[4]
O. A. Mikhaylenko, M. S. Kozhevnikova, “On the influence of anisotropy of the elastic properties of wood and plywood on the stress-strain state of combined structures”, Technical sciences - from theory to practice: collection of articles, LXIII International Scientific-Practical Conference, vol. 10 (58), Novosibirsk: SibAK, 2016, pp. 118-126.
[5]
A. V. Karelsky, T. P. Zhuravleva, B. V. Labudin, “The test for the bending of wooden composite beams connected by metal toothed plates, destroying the load”, vol. 2(54), Magazine of Civil Engineering, 2015, pp. 77-127.
[6]
Benjeddou Omrane, Limam Oualid, Ouezdou Mongi Ben, “Experimental and theoretical study of a foldable composite beam”, vol. 44, Engineering and Structures, 2012, pp. 312-321.
[7]
Challamel Noël, Girhammar Ulf Arne, “Lateral-torsional buckling of vertically layered composite beams with interlayer slip under uniform moment”, vol. 34, Engineering and Structures, 2012, pp. 505—513.
[8]
P. M. Davis, R. Gupta, A. Sinha, “Revisiting the neutral axis in wood beams”, Holzforschung, 2012, pp. 497-503.
[9]
Fernando D., Frangi A., Kobel P., “Behavior of basalt fiber reinforced polymer strengthened timber laminates under tensile load”, vol. 117, Engineering and Structures. 2016, pp. 437-456.
[10]
Harte A. M., Baylor G., “Structural evaluation of castellated timber I-joists”, vol. 33, no. 12, Engineering and Structures, 2011, pp. 3748-3754.
[11]
Hu Chuanshuang, Xiao Min, Zhou Haibin, Wen Wei, Yun Hong., “Damage detection of wood beams using the differences in local modal flexibility”, vol. 57, no. 6, J. Wood Science, 2011, pp. 479-483.
[12]
L. V. Lyutov, “The use of composite combined beams in the construction of low-rise wooden houses”, vol. 15, no. 5, MOTROL, 2013, pp. 151-156.
[13]
V. P. Sintsov, L. V. Liutov, “Experimental study of nailed connections of wooden bars with a thin steel plate”, vol. 6, Construction mechanics of engineering structures and structures, 2015, pp. 16-20.
[14]
E. Toussaint, E. Fournely, Pitti R. Mountou, M. Gredias. “Studying the mechanical behavior of notched wood beams using full-field measurements”, vol. 113, Engineering and Structures, 2016, pp. 277-286.
[15]
I. L. Kuznetsov, I. V. Krainov, L. R. Gimranov, “Strengthening of glued plywood I-beams”, vol. 4, Izvestiya of Kazan State Architectural and Construction University, 2015, pp. 166-170.
[16]
A. N. Ponomarev, A. S. Rassokhin, “Hybrid wood-polymer composites in civil engineering”, vol. 8(68), Magazine of Civil Engineering, 2016, pp. 45-47.
[17]
A. R. Tusnin, M. Prokitch, “Pilot studies of work of beams of double-T section at action of a bend and torsion”, vol. 1(53), Magazine of Civil Engineering, 2015, pp. 24-31.
[18]
A. S. Toropov, S. A. Toropov, E. V. Mikryukova, “Investigation of the damage of wood with rotted decay”, vol. 4, IVUZ Lesnoy zhurnal, 2009, pp. 95-100.
[19]
V. F. Dunaev, “Sawmill: from geometry to physics, mechanics and technology”, vol. 1, IVUZ Lesnoy zhurnal, 2008, pp. 90-100.
[20]
A method for obtaining constructional sawmill from roundwoods with core rot: Patent No.2654720 RF: MCP B27B 1/100/Byzov V. E., Toropov A. S., Toropov S. A.: Applicants and patent holders: Federal State Budget Educational institution of higher education "St. Petersburg State Architecture and Construction University. – No.2017131378; application dated 06.09.2017; published on 20.05.2018.
Browse journals by subject