Mechanical properties and resistant mechanism around bearing joint between plywood and bolt of building structures

The authors have suggested a structural sandwich panel, in which a steel column is sandwiched between thick plywood connected by bolt joints. In a previous study the horizontal resistance mechanism and destructive properties of sandwich panels using structural plywood were clarified. This resistance mechanism is affected by the bolt layout of the sandwich panel. In this study, the bearing test of structural plywood was performed as a parameter with fiber anisotropy to investigate the bearing resistance, destructive properties, and stress transfer mechanism of structural plywood by the bearing joint between plywood and bolt. From the test result, the bearing resistance and destructive properties were clarified, and an analysis method was proposed to calculate the bearing strength. The destructive properties and stress transfer mechanism of structural plywood differ according to the fiber anisotropy. During the installation of the sandwich panel, it was found that the fiber direction of the plywood due to the bearing resistance was related to the destructive properties.