A sliding type three-dimensional seismic isolator was introduced.A hysteretic model considering the influence of parameters was proposed, and a loading-deformation correlation formula was presented.Model isolators were tested under bidirectional loading, and the hysteretic properties under different loading conditions were obtained and compared with those by the uniaxial loading test.The results show that the sliding type isolator can make the vertical and horizontal properties decoupled, and the results of bidirectional loading are close to those of uniaxial loading, which can achieve good energy dissipation effect.To further explore the influences of friction coefficient and inclination angle of the isolator on its vertical mechanical properties, a finite element model of the sliding type 3D seismic isolator was established by ABAQUS.The vertical mechanical properties under different combinations of angle and friction coefficient were analyzed.The design range of reasonable inclination angle was given so as to provide a reference for the design and application of the sliding type 3D seismic isolator in practical engineering.
刘文光1,梅晓晨1,许浩1,徐鸿飞2. 滑动型三维隔震装置双向加载试验及力学性能相关性分析[J]. 振动与冲击, 2021, 40(2): 49-56.
LIU Wenguang1,MEI Xiaochen1,XU Hao1,XU Hongfei2. Bidirectional loading test and mechanical properties correlation analysis of a sliding type three-dimensional seismic isolator. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(2): 49-56.
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