Design of a novel inerter damper and its aseismic effect under earthquake
LIU Liangkun1,TAN Ping2,YAN Weiming3,LI Xiangxiu4,ZHOU Fulin2,3
1.School of Environment and Civil Engineering,Dongguan University of Technology，Dongguan 523808,China;
2.Earthquake Engineering Research & Test Center,Guangzhou University，Guangzhou 510405,China;
3.College of Architecture and Civil Engineering,Beijing University of Technology，Beijing 100124,China;
4.Institute of Geophysics,China Earthquake Administration,Beijing 100081,China
Abstract：Here, a TID was adopted for aseismic control of structures. The analytical formulas of optimal damping parameters and optimal stiffness ones for a single DOF structure with TID and a multi-DOF structure with TID subjected to ground white noise excitation were deduced, and the corresponding aseismic effects and application in multi-DOF systems were presented. The results showed that the optimal parameters’ analytical formulas keep higher accuracy when the structure damping is considered, the smaller the structural damping ratio, the smaller their errors and the higher their accuracy, the aseismic effect of TID is more obvious; if the damping ratio of a structure is larger, the larger mass ratio can be adopted to improve its vibration reduction effect; under random seismic excitations, although the damping ratio of vibration isolation layer is smaller than that of a common vibration isolation structure, after installed with TID or TMD, it is possible for a structure to get better vibration reduction effect; compared with TMD, it is better for TID to be installed at bottom of a structure and get the better effect, but in case of the same mass ratio, TID’s effect on structure’s top layer response is poorer; considering the mass amplification effect of TID, it can be improved until its aseismic effect exceeds TMD’s, TID can be made with a rod’s shape for easy installation.
刘良坤1，谭平2，闫维明3，李祥秀4，周福霖2,3. 一种新型惯容减震器的设计及减震效果研究[J]. 振动与冲击, 2018, 37(15): 156-163.
LIU Liangkun1,TAN Ping2,YAN Weiming3,LI Xiangxiu4,ZHOU Fulin2,3. Design of a novel inerter damper and its aseismic effect under earthquake. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(15): 156-163.
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