| 英文摘要 |
Structural vibration is an important concern for structures subjected to seismic excitations, especially for critical structures such as nuclear power plants and high technology facilities. To completely function under and after seismic excitations, structural vibration should be mitigated as much as possible. In this study, the 3D periodic foundation, which is one implementation of periodic material, is experimentally studied. This type of material possesses a frequency bandgap that could isolate or change the direction of wave propagation if the frequency content of a wave falls into that frequency bandgap. Thus, the structural vibration can be suppressed by the implementation of the proposed 3D periodic function. The seismic performance and feasibility of the 3D periodic foundation are verified by the shaking table test. |
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