Compression Performance and Calculation Method of Thin-Walled Prefabricated Steel Tube Lightweight Concrete Columns

Table 1

Parameters of the specimens.

No.	Cross section height (mm)	Component length (mm)	Component thickness (mm)	Concrete strength	Section width-to-thickness ratio	Steel pipe cross-sectional area (mm^2)	Steel content	Slenderness ratio
Z120-2.2-20	120	1500	2.2	LC20	54.55	932	15.5%	30
Z120-2.2-25	120	1500	2.2	LC25	54.55	932	15.5%	30
Z120-2.2-30	120	1500	2.2	LC30	54.55	932	15.5%	30
Z120-2.2-k	120	1500	2.2	Hollow	54.55	932	—	30
Z120-3.0-20	120	1500	3.0	LC20	40	1140	19%	30
Z120-3.0-25	120	1500	3.0	LC25	40	1140	19%	30
Z120-3.0-30	120	1500	3.0	LC30	40	1140	19%	30
Z120-3.0-k	120	1500	3.0	Hollow	40	114	—	30
Z200-2.2-20	200	1500	2.2	LC20	90.91	1188	8.5%	21.4
Z200-2.2-25	200	1500	2.2	LC25	90.91	1188	8.5%	21.4
Z200-2.2-30	200	1500	2.2	LC30	90.91	1188	8.5%	21.4
Z200-2.2-k	200	1500	2.2	Hollow	90.91	1188	—	21.4
Z200-3.0-20	200	1500	3.0	LC20	66.67	1620	11.6%	21.4
Z200-3.0-25	200	1500	3.0	LC25	66.67	1620	11.6%	21.4
Z200-3.0-30	200	1500	3.0	LC30	66.67	1620	11.6%	21.4
Z200-3.0-k	200	1500	3.0	Hollow	66.67	1620	—	21.4