【摘 要】
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This study proposes a novel U-shaped 65Mn steel bumper as the displacement restraining device for base-isolated structures with laminated elastomeric rubber bea
【机 构】
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Beijing University of Civil Engineering and Architecture, Beijing 102612, China;BHB Consulting Engin
论文部分内容阅读
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.
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