Variable Local Moduli of Elasticity as Inputs to FEM-based Models of Beams made from Glued Laminated Timber

Abstract

The present paper is concerned with the formulation of advanced FEM based models of beams made from glued timber segments. These models account for variable elastic moduli in individual segments and their analysis is based on the application of LHS method. All results from probabilistic calculations are compared with experimental measurements conducted on twenty beams as well as with the FEM results derived for the same beams assuming deterministic analysis with piecewise constant moduli in individual segments. The main contribution of enhanced probabilistic models is seen primarily in the ability to provide cost effective designs of long-span glued timber structures.