Base Isolation of Buildings with Curved Surface Sliders: Basic Design Criteria and Critical Issues

Table 1

Characteristics of sliders.

Friction coefficient	μ	1.5 μ	2.5 μ
High-speed friction	0.035	0.0525	0.0875
Low-speed friction	0.025	0.0375	0.0625
Secant stiffness Ke(kN/m)	379.2	444.0	573.5
Elastic shear stiffness k (kN/m)	11438.2	13391.0	17296.8
Equivalent period Tis (s)	3.26	3.01	2.65