Assessment of Rotational Stiffness for Metallic Hinged Base Plates under Axial Loads and Moments

Pinned base plate connections are the most common connection used in low-rise steel buildings. In this research, an extensive parametric study is performed using Finite Element (FE) software Abaqus to determine elastic rotational stiffness, moment resistance, and energy absorption of pinned connected a reinforced concrete footing subjected eccentric axial load. The developed FE model validated experimental results from literature. Moreover, intensive conducted understand behavior these better. investigated parameters include thickness, anchor bolt diameter, arrangement number bolts. effective that affect stiffness resistance diameter. maximum increase was 53% for diameter 30 mm when thickness increased 12 mm. Based on improved by 150–260% increases