Experimental Study on Bearing Capacity of Reinforced Steel Tubular Scaffold under Uniform Loads

Table 4

Summary of bearing capacity and failure modes of experimental models.

Models	Overall ultimate bearing capacity (kN)	Ultimate bearing capacity of single vertical rod (kN)	Main failure modes	Maximum slippage of joints (mm)
1	840	23.3	Defection of top horizontal rods and breakage of fasteners	43.5
2	1575	43.75	Overall instability	25
3	1425	39.6	Deflection of top horizontal rods and local buckling of vertical rods	19
4	1125	31.25	Overall instability, local buckling of top horizontal rods, compressive joint failure, and disconnection of several joints	15
5	1200	33.3	Local buckling of top horizontal rods and compressive joint failure	25