Experimental and Numerical Study on the Compression Behavior of Square Concrete-Filled Steel Tube Stub Columns with Steel Fiber-Reinforced High-Strength Concrete

Table 1

Variables and details of test specimens.

Specimen		(MPa)	Fy (MPa)	Partial concrete strength ()
HS-800	6.7	0	879	NA	5472
CS-800-3	6.7	30	879	0.05	5725
CS-800-10	6.7	102	879	0.14	6328
CS-800-F10	6.7	102	879	0.14	6328
HS-490	6.7	0	360	NA	2165
CS-490-3	6.7	30	360	0.11	2418
CS-490-10	6.7	102	360	0.29	3024
CS-490-F10	6.7	102	360	0.29	3024

: width of column section; : thickness of steel; : compressive strength of concrete; : yield strength of steel; ; : sectional area of concrete; : sectional area of steel; : calculated strength of test specimen based on KBC2016.