Development of a Multiaction Hybrid Damper for Passive Energy Dissipation

Table 2

Initial stiffness according to different pitches of bolts on the flange of the T-steel.

Pitches of bolts on the flange of the T-steel (mm)	Net length of bolts (mm)	Initial stiffness (kN/mm)		Error rate (%)
		Calculated	Experiment
90	60	210.6	211.92	0.6
150	120	162.1	161.89	0.1
200	170	109.1	110.08	0.9