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- Title
Mechanical property of U-Shaped 65Mn steel bumpers for seismic base isolation.
- Authors
Miao, Han; Yuandong, Wang; Hongkai, Du; Xiangdong, Cui
- Abstract
This study proposes a novel U-shaped 65Mn steel bumper as the displacement restraining device for base-isolated structures with laminated elastomeric rubber bearings. A series of bumpers with different geometric parameters were designed and tested under monotonic and cyclic quasi-static loading protocols. The experimental results from a total of 232 specimens were analyzed to develop an analytical model to calculate the backbone curve and the maximum elastic restoring force for U-shaped 65Mn bumpers. Thus, the analytical equations to calculate the elastic, hardening, and unloading stiffness of U-shaped 65Mn bumpers, as well as their maximum elastic restoring force, are validated by using an additional ten groups of bumpers with varying radiuses. These analytical equations can accurately predict the mechanical parameters of U-shaped 65Mn steel bumpers for a design purpose.
- Subjects
BASE isolation system; RUBBER bearings; STEEL; CYCLIC loads
- Publication
Earthquake Engineering & Engineering Vibration, 2021, Vol 20, Issue 3, p791
- ISSN
1671-3664
- Publication type
Article
- DOI
10.1007/s11803-021-2052-5