Capacity of a traditional timber mortise and tenon joint

摘要

The safety and quality of traditional timber structures mostly depends on the conditions oftheir connections. A testing campaign has investigated the behaviour of mortise and tenon timber joint. Thepresent paper addresses the quantification of the strength capacity of wood-wood mortise and tenon joint byphysical testing of full-scale specimens. In addition, the performance of different non-destructive techniques(NDT) for assessing global strength is also evaluated. For this three non-destructive methods (ultrasonic testing,Resistograph and Pilodyn) are considered and the possibility of their application is discussed based on theapplication of simple linear regression models. New (NCW) and old (OCW) chestnut wood, obtained fromstructural elements belonging to old buildings, is used. Finally, a nonlinear model has been formulated and thepredicted behaviour compared with the behaviour observed in the full-scale experiments, in terms of failuremode and the ultimate load. The study has shown very good agreement with the experimental values.