Experimental Study on a New Connection Method of Latticed Shell Joint

摘要

In this research, the axial and eccentric pressure tests and finite element analysis (FEA) of a latticed shell joint with different parameters were carried out. The experimental and FEA results showed that the annular plate yielded first, followed by steel tube 1, and then steel tube 2 under the axial pressure and eccentric pressure. The ultimate bearing capacities of connection method II under axial pressure and eccentric pressure were 15% and 11% higher than that of connection method I, respectively. The wall thickness of steel tube 2 was reduced by 2 mm, and the ultimate bearing capacities under axial pressure and eccentric pressure is reduced by 15% and 11%, respectively. The wall thickness of steel tube 1 was reduced by 2 mm, and the ultimate bearing capacities under axial pressure and eccentric pressure is reduced by 6% and 9%, respectively. With the decrease of the concrete thickness, the ultimate bearing capacity under axial pressure and eccentric pressure reduced by 18% and 17%, respectively. The ultimate bearing capacity analysis showed that the height of the concrete and the thickness of steel tube 2 had a greater effect on the ultimate bearing capacity than the thickness of steel tube 1.