Seismic Behavior of Box Steel Bridge Pier with Built-In Energy Dissipation Steel Plates

Table 3

Test results of material specimens.

Specimen label		Nominal thicknesses (mm)	Measured thicknesses (mm)	Nominal yield strengths (MPa)	Measured yield strength fy (MPa)	Ultimate strengths fu (MPa)	Ratios of yield to ultimate δ
Q235	Q235-4-1	4	3.79	235	370	467	0.79
	Q235-4-2		3.79		391	491	0.80
	Q235-4-3		3.73		405	506	0.80
	Average value		3.77		389	488	0.80
	Standard deviation		0.03		14.38	16.06	0.00
Q235	Q235-6-1	6	6.01	235	351	440	0.798
	Q235-6-2		5.99		343	421	0.815
	Q235-6-3		6.03		325	416	0.781
	Average value		6.01		340	425	0.798
	Standard deviation		0.02		10.87	10.34	0.0137
Q235	Q235-8-1	8	8.21	235	402	551	0.729
	Q235-8-2		8.22		423	550	0.769
	Q235-8-3		8.26		390	515	0.757
	Average value		8.23		405	539	0.752
	Standard deviation		0.02		13.64	16.74	0.0166
Q355	Q355-6-1	6	5.76	355	374	508	0.736
	Q355-6-2		5.82		361	484	0.746
	Q355-6-3		5.78		376	498	0.755
	Average value		5.79		370	497	0.746
	Standard deviation		0.02		6.65	9.84	0.0077