On the variability in time of the longitudinal modulus of elasticity <em>E</em> and the traverse modulus of elasticity <em>G</em> and their impact on the rigidity of timber structures

The paper formulated the problem of lack of analysis of changes in rigidity over time, large-space constructions of glued wood, describing the dome of Konohana Dome in Japan. On the example of a study of pine beams with a static support scheme, it was shown that on the basis of the bending measurement it was possible to estimate the spring and form rigidity of the research model. It has been shown that with the increase in bending over time, the moduli of longitudinal E and transverse G elasticity decreases. It has been revealed that the cause of the nonlinear increase in bending over time is the decreasing rigidity of the spring and the shape of the support beam.