Research on the Factors Influencing the Seismic Performance of Grouting Sleeve Assembled Double-Column Piers

Table 4

Group B pier model strength and deformation characteristics of numerical value.

Specimen	Load direction	Yield		Ultimate		Ductility factor
		Force (kN)	Displacement (mm)	Force (kN)	Displacement (mm)
B1	Positive	11,696.8	33.06	13,800.0	59.95	5.93
	Negative	11,500.6	28.46	13,500.0	58.41	7.52
A	Positive	11,907.0	32.57	14,100.0	59.80	5.72
	Negative	12,148.7	30.15	13,900.0	58.66	7.04
B2	Positive	11,205.1	32.10	14,200.0	59.42	5.48
	Negative	12,318.3	31.96	14,000.0	59.70	7.02
B3	Positive	12,231.1	31.41	15,300.0	59.48	5.39
	Negative	12,840.7	31.14	14,900.0	59.45	6.98