Seismic Performance of Steel Box Bridge Piers with Earthquake-Resilient Function

Table 4

Comparison on peak point data of pseudostatic specimens.

Specimen label		Peak point label	δ1 (mm)	δ2 (mm)	ER (%)	(kN)	(kN)	ER (%)
I-1	Plus	1	25.98	28.44	9.47	318.81	331.91	4.11
		2	34.87	37.91	8.69	344.91	320.49	7.08
		3	45.71	47.40	3.72	326.61	303.57	7.06
		4	55.35	56.88	2.76	277.62	298.81	7.63
	Minus	1	−26.25	−28.44	8.34	−321.25	−328.88	2.38
		2	−36.49	−37.91	3.86	−327.91	−312.12	4.82
		3	−46.43	−47.40	2.09	−312.59	−299.98	4.03
		4	−57.12	−56.88	0.42	−247.19	−290.62	17.57
II-1	Plus	1	26.19	28.44	8.59	345.18	329.72	4.48
		2	35.62	37.92	6.46	392.93	353.35	10.07
		3	45.31	47.09	3.95	411.06	365.52	11.08
		4	55.22	56.88	3.01	431.15	371.79	13.72
	Minus	1	−26.62	−28.44	6.92	−338.68	−338.02	0.20
		2	−36.06	−37.92	5.16	−378.74	−356.95	5.74
		3	−45.46	−47.09	3.61	−401.48	−365.88	8.84
		4	−55.12	−56.88	3.19	−428.87	−371.12	13.50