Abstract
The dynamic development of wooden structures is inherently connected with emergence of the new structural elements having high operating parameters, increased strength and rigidity. Composite wooden structures based on wood and reinforcing material made from glass, aramid or carbon fiber on a polymer matrix fully comply with the requirements. The complex stress-strain state that occurs in the reinforced wooden elements necessitates a plainly required experimental confirmation of the assumptions and suppositions taken as theoretical. Comparative analysis of the theoretical and experimental investigation of wooden beams reinforced with carbon fiber polymer composite and modification of the wood compressed zone has been performed as a part of the research. Test installation for testing beam structures is presented, “load-strain relation” and relative deformation diagrams in the cross section of wood-composite beams are constructed. The stress-strain state of the structures at various stages of loading is analyzed. Sufficient convergence of the results of the experimental and theoretical investigations is established. The discrepancy in the first group of limit states does not exceed 3.5%, in the second group does not exceed - 9%.
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