Research Article
An Experimental Investigation of Unbonded Laminated Elastomeric Bearings and the Seismic Evaluations of Highway Bridges with Tested Bearing Components
Table 5
Comparison of both the equivalent stiffness and damping ratio of specimen Y3-8/45-BB.
| | ESS (%) | Equivalent stiffness | Equivalent damping ratio | Experiment
(×103 Nmm) | OpenSees
(×103 Nmm) | Difference (%) | Experiment
(×103 Nmm) | OpenSees
(×103 Nmm) | Difference (%) |
| | 75 | 1.808 | 1.937 | −7.1 | 0.198 | 0.186 | 6.1 | | 100 | 1.736 | 1.876 | −8.0 | 0.164 | 0.150 | 8.0 | | 150 | 1.656 | 1.842 | −11.2 | 0.128 | 0.137 | −7.0 | | 200 | 1.636 | 1.748 | −6.8 | 0.105 | 0.111 | −5.9 | | 250 | 1.585 | 1.641 | −3.5 | 0.107 | 0.100 | 6.8 |
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