Metal-plate connections loaded in combined bending and tension

This study evaluates the load capacity of metal-plate connections under combined bending and axial loads and shows the reduction in connection tensile capacity with an increase in applied moment. Five load categories, including pure axial tension, pure bending, and three intermediate levels of combined loading, were applied to joints fabricated using one plate type in southern pine 2 by 4 lumber. Each joint was tested to failure and the axial and/or moment load at the connection was evaluated on the basis of its fraction of pure axial and/or moment capacity. A tension-bending interaction equation was derived to represent the observed interaction response of these connections.

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