CAJ | 학술논문

为利用单振动台进行空间大跨度结构动力试验，提出地震模拟振动台扩展系统概念。根据达朗贝尔原理对系统子台进行动力平衡分析，建立振动台扩展系统理论分析模型，通过考虑振动过程中上部结构对子台的动力影响，合理确定动力方程关键参数，改变系统参量可实现结构多点激励研究。设计并制作振动台扩展系统，试验结果表明，系统子台反应有明显时滞、增幅效应。试验及算例表明，该理论正确，方法可行，对地震模拟振动台试验系统的发展有实际意义。
위이용단진동태진행공간대과도결구동력시험，제출지진모의진동태확전계통개념。근거체랑패이원리대계통자태진행동력평형분석，건립진동태확전계통이론분석모형，통과고필진동과정중상부결구대자태적동력영향，합리학정동력방정관건삼수，개변계통삼량가실현결구다점격려연구。설계병제작진동태확전계통，시험결과표명，계통자태반응유명현시체、증폭효응。시험급산례표명，해이론정학，방법가행，대지진모의진동태시험계통적발전유실제의의。
In order to conduct the spatial large span structural dynamic tests by using a single vibration table,the concept of seismic simulation shaking table extended system was introduced.The dynamic balance analysis on the sub-station of the system was carried out according to the d’Alembert’s principle,and a theoretical analysis model of the shaking table extended system was established.The key parameters of dynamic equations were determined reasonably by considering the dynamic effect of upper structure on sub-station in the process of vibration analysis.The multi-point incentive study was achieved by varying system parameters.The shaking table extended system was designed and produced.The test results show that,the time lag effect and growth effect of the system sub-station response are significant.The test and numerical examples show that the theory is correct and the method is feasible.The results are of practical significance for the improvement of earthquake simulation shaking table test devices and the development of extended systems.