Design and performance study of a linear guide type isolation device
A novel isolation device using a linear guide was developed to ensure the seismic safety of cultural relics stored in museums.Its effectiveness was validated through shaking table tests and theoretical analysis.The structure and working mechanism of the device were initially ex-plained,and the expressions for its stiffness and viscous damping coefficient were derived.A pro-totype was constructed,and its isolation effectiveness was verified through shaking table tests.The dynamic equation of the unidirectional horizontal isolation system of the device,validated with experimental results,was established,followed by numerical analysis.The results demon-strate that the isolation device features a simple structure,reliable performance,low friction co-efficient,small sliding acceleration threshold,and flexible adjustability in stiffness and damping.It effectively achieves the target isolation while satisfying the displacement limit,with a strong self-resetting capability and minimal residual displacement.The theoretical analysis results are highly consistent with the measured dynamic response in tests,with the degree of conformity in-creasing as peak ground acceleration rises.The theoretical analysis method can serve as a guide for designing device parameters and evaluating isolation performance.
cultural relicsseismic isolationlinear guide typeshaking table testnumerical simulation
万方数据
维普
