A curved Glulam beam is manufactured by forcing the laminas with an adhesive into the designed curve, bending stress is thus formed in each lamina. When the adhesive is solidified and the applied forces are removed, there are bending stress, shear stress and stress perpendicular to grain remaining in the beam. The residual stresses will affect the load-carrying capability of the beam. A curved Glulam beam is a kind of prestressed members with both longitudinal stress and stress perpendicular to grain from manufacturing. In engineering practice, some curved Glulam beams failed due to tension of perpendicular to grain. It is, therefore, useful to investigate the residual stresses from production for proper design of curved Glulam beams. The residual stress from the manufacturing is important to understanding of the performance of curved Glulam beams.
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