Theoretical and Experimental Research on the Seismic Simulation Shaking Table Expansion System
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 is put forward. Dynamic balance analysis of sub-station on the system was conducted according to the d’Alembert’s principle, theoretical analysis model of the shaking table extended system was conducted. The key parameters of dynamic equations was determined reasonably by considering the dynamic effect on sub-station from upper structure in the process of vibration, multi-point incentive study can be achieved by changing the system parameters. Shaking table extended system was designed and produced. The test results showed that, the time lag effect and growth effect of the system sub-station response was significantly. Test and numerical examples showed that the theory is correct, the method is feasible, it has practical significance for the reformation of the earthquake simulation shaking table test device and the development of the extended system.
School of civil engineering，Xi'an University Of Architecture And Technology，Xi’an 710055
Abstract：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 is put forward. Dynamic balance analysis of sub-station on the system was conducted according to the d’Alembert’s principle, theoretical analysis model of the shaking table extended system was conducted. The key parameters of dynamic equations was determined reasonably by considering the dynamic effect on sub-station from upper structure in the process of vibration, multi-point incentive study can be achieved by changing the system parameters. Shaking table extended system was designed and produced. The test results showed that, the time lag effect and growth effect of the system sub-station response was significantly. Test and numerical examples showed that the theory is correct, the method is feasible, it has practical significance for the reformation of the earthquake simulation shaking table test device and the development of the extended system.
李青宁，程麦理，尹俊红，闫磊，韩春，周春娟. 地震模拟振动台扩展系统理论分析及试验研究[J]. 振动与冲击, 2015, 34(7): 81-84.
LI Qingning, CHENG Maili, YIN Junhong, YAN Lei, HAN Chun, ZHOU Chunjuan. Theoretical and Experimental Research on the Seismic Simulation Shaking Table Expansion System. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(7): 81-84.
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