Size Effect on the Seismic Performance of High-Strength Reinforced Concrete Columns with Different Shear Span-to-Depth Ratios

Table 6

Strain in longitudinal reinforcement and stirrups of WF specimens.

Test no.	Load stage	(×10^−6)	(×10^−6)	(×10^−6)	(×10^−6)
WF-3-2	Maximum load	4895(21.5)	2429	243(43)	1752
				1031(86)
				488(129)
				697(172)
WF-5-2	Maximum load	3118(177.5)	2310	204(71)	1779
				639(142)
				1102(213)
				736(284)
WF-7-2	Maximum load	3530(50.0)	2374	1279(100)	1736
				326(200)
				1590(300)
				342(400)
WF-3-4	Maximum load	2531(21.5)	2429	1042(43)	1752
				2199(86)
WF-5-4	Maximum load	3345(35.5)	2310	230(71)	1779
				279(142)
WF-7-4	Maximum load	2463(250)	2374	1702(100)	1736
				614(200)

and : measured strain in the longitudinal bars and stirrups; and : yield strain in the longitudinal bars and stirrups. The number inside the parentheses represents the distance from the foot of the column to the gage location (in mm).