An innovative isolation device for aseismic design

作者：Ismail M; Rodellar J^*; Ikhouane F

来源：Engineering Structures, 2010, 32(4): 1168-1183.

DOI：10.1016/j.engstruct.2009.12.043

• Base isolation
• Rolling-based isolator
• RNC isolator
• Hysteresis
• Bouc-Wen Model
• Identification

A new seismic isolation system, namely the roll-n-cage (RNC) isolator, is introduced This RNC Isolator incorporates isolation, energy dissipation, buffer and inherent gravity-based restoring force mechanisms in a single unit. It also provides adequate wind resistance, a great range of horizontal flexibility and always exhibits no uplift during its lateral motion. The principles of operation and force-displacement relationships of the novel RNC isolator are briefly explained Further, its performance evaluation is presented via implementation in heavy-mass structures The numerical results reveal that the RNC isolation bearing exhibits a robust performance for a wide range of structures and ground motion excitations.

• 出版日期2010-4