地震模拟振动台三台阵反力基础动力特性试验
The dynamic behavior experiment on reacted foundation

简要概括地震模拟振动台反力基础的研究现状，通过输入扫频波和间断正弦波对福州大学地震模拟振动台三台阵系统反力基础进行动力特性试验研究，分析该台阵反力基础的振动反应及其对试验大厅和周围环境的影响. 试验结果表明，反力基础的振动反应具有多峰值现象，该台阵系统引起的基础振动反应幅值较小，同时，具有隔振沟的群桩基础振动台可以有效减小振动对周围建筑的影响. 该台阵基础可为地震模拟振动台阵反力基础的设计施工提供参考与借鉴.
The state-of-the-art of foundation of shaking tables was briefly summarized. Based on the triple-shake tables of earthquake simulator in Fuzhou University，the vibration characteristic test of the mass-reacted foundation were introduced，and the effect on the Lab and facilities were considered. Testing results show that the acceleration response of the foundation has multi-peak phenomena，and the foundation of group piles with isolated trench can effectively weaken its own vibration，so the amplitude of response and the influence on ambience is not significant. It is expected that the introduction will benefit to the design and construction of the multiple shaking tables facilities