Experimental Study of H-Shaped Honeycombed Stub Columns with Rectangular Concrete-Filled Steel Tube Flanges Subjected to Axial Load

Table 1

Main parameters of specimens.

Specimens	Dimensions  × h1 × b × t1 × t2 (mm^5)	l (mm)	λs	fyf (MPa)	fyw (MPa)	ξ	fcu (MPa)
STHCC-1	100 × 50 × 100 × 1.7 × 06	370	12.82	269	321	0.60	49.50
STHCC-2	100 × 50 × 100 × 1.7 × 06	370	12.82	269	321	0.60	49.50
STHCC-3	100 × 50 × 100 × 2.3 × 06	370	12.82	282	321	0.88	49.50
STHCC-4	100 × 50 × 100 × 3.8 × 06	370	12.82	286	321	1.60	49.50
STHCC-5	100 × 50 × 100 × 3.8 × 06	370	12.82	286	321	1.60	49.50
STHCC-6	100 × 50 × 100 × 2.3 × 06	370	12.82	282	321	0.82	53.17
STHCC-7	100 × 50 × 100 × 2.3 × 06	370	12.82	282	321	0.66	65.60
STHCC-8	100 × 50 × 100 × 2.3 × 06	370	12.82	282	321	0.78	55.69
STHCC-9	100 × 50 × 100 × 1.7 × 08	370	12.82	269	325	0.60	49.50
STHCC-10	100 × 50 × 100 × 1.7 × 12	370	12.82	269	331	0.60	49.50
STHCC-11	100 × 50 × 100 × 2.3 × 06	270	12.82	282	321	0.88	49.50
STHCC-12	100 × 50 × 100 × 2.3 × 06	470	16.28	282	321	0.88	49.50
STHCC-13	100 × 50 × 100 × 1.7 × 06	270	9.35	269	321	0.60	49.50
STHCC-14	100 × 50 × 100 × 1.7 × 06	470	16.28	269	321	0.60	49.50
STHCC-15	100 × 50 × 100 × 3.8 × 06	270	9.35	286	321	1.60	49.50
STHCC-16	100 × 50 × 100 × 3.8 × 06	470	16.28	286	321	1.60	49.50

Note., h₁, b, t₁, and t₂ are the web width, flange steel tubes’ height, width, and thickness, and web thickness, respectively. l is specimen length. λ_s is the slenderness ratio, i.e., . f_yf and f_yw are the measured average yield strength for flange and web steel, respectively. f_cu is the measured average cubic compressive strength for concrete. ξ is the hoop coefficient, i.e., ξ = A_sf_yf/A_cf_ck. The physical meaning of these variables is explained in the study by Yang and Han [31].