Experimental research on effect of spring displacement-constraint devices on structural response of base-isolated structures under near-fault ground motion
HAN Miao1, CUI Ming-zhu1, DU Hong-kai,1,2
1.Beijing Collaborative Innovation Center of Energy Conservation and Emission Reduction Technology,Beijing University of Civil Engineering and Architecture,Beijing100044, China;
2.Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology，Beijing 100022，China
Abstract：A large deformation of base isolation layer could be induced by the near-fault ground motions．Although the displacement-constraint devices can constraint the large displacements of the base isolation layer, impacts between the displacement-constraint devices and the superstructures of the base isolation layer may change the dynamic responses of the superstructures. 9sets of tests about base-isolated structures impacting on spring displacement-constraint devices are analyzed. The results indicate that the displacement-constraint devices can constraint the displacement of the base isolation layer well, but higher modes will be elicited and great velocity increments may be produced due to the impact. The story drifts and acceleration of superstructures will increase in the case of impact. The responses of superstructures may be reduced when the stiffness of the displacement-constraint devices and the gaps between the devices and structures are designed reasonably.
韩淼1，崔明珠1，杜红凯,1,2. 近断层地震动下基础隔震弹簧限位对结构响应影响试验研究[J]. 振动与冲击, 2017, 36(19): 175-179.
HAN Miao1, CUI Ming-zhu1, DU Hong-kai,1,2. Experimental research on effect of spring displacement-constraint devices on structural response of base-isolated structures under near-fault ground motion. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(19): 175-179.
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