Experimental and Numerical Investigation of Seismic Performance of UHPC Thin-Walled Short Piers

Table 4

Displacement ductility and ultimate load calculation results of specimens.

Specimen	Direction	Fy (kN)	Δy (mm)	Fp (kN)	Δu (mm)	Stiffness	Ductility
U20S	+	119.03	17.09	136.21	42.72	1.82	3.42
	−	121.79	18.20	159.43	43.47
U20 M	+	125.26	15.25	139.34	41.16	1.86	3.44
	−	130.15	15.76	157.69	56.25
U22S	+	142.37	12.48	163.84	41.03	2.02	3.25
	−	150.89	13.67	199.47	43.28
U22 M	+	174.38	17.83	213.60	46.20	2.12	3.17
	−	183.12	20.08	221.53	48.85
C22S	+	125.19	22.74	149.55	36.52	2.36	2.89
	−	125.44	23.48	199.48	38.35
C22 M	+	132.77	26.31	169.95	35.53	2.39	2.23
	−	131.74	23.13	209.50	35.27