Experimental and numerical investigations on steel–concrete–PVC SHS joints under axial compression

This paper presents the experimental and numerical investigations on steel–concrete–PVC SHS joints under axial compression, in which PVC pipes were used as the inner tube of chord member and SHS steel tubes were used as the outer tube of chord member. A total of 22 joints with different brace to chord width ratio (β), hollow ratio of chord (φ) and shapes of PVC inner tube of chord were tested, in which two traditional hollow joints and two...