Experimental study on tensile properties of along the grain metal-plate-connected joints of laminated bamboo lumber

Abstract

Utilizing various metal-plate-connected dimensions and angles, the performance of load parallel to grain metal-plate-connected joints of laminated bamboo timber was examined. A tensile test is used to determine the effects of the metal-plate connection's dimension and angle on the connection joints' ultimate load, ultimate displacement, initial stiffness, and anti-sliding stiffness. According to the findings, when there is a 60° angle between the main shaft direction of the metal plate and the load, the ultimate strength of the load parallel to grain connection is at its highest. The metal-plate-connected joints ultimate load capacity will be impacted by changes to both the metal plate and the width. The metal plate pull-out damage that results from an increase in metal plate length in the AA direction will cause the ultimate load to decrease, whereas an increase in metal plate width in the AE direction will cause the ultimate load brought on by the increase of metal plate width to decrease due to the appearance of the metal plate shear damage. Comparing the tensile characteristics of various connecting materials, it is discovered that laminated bamboo lumber materials have good connecting characteristics. The Foschi model was used to do a non-linear fitting of the test curve, and the fitting formula was then obtained.