Performance tests of steel spring vibration isolation device and analysis of its structural vibration control parameters

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (17) : 204-212.

FU Weiqing1,2, ZHAO Peng1, HAN Yanyan3, GAO Yunfeng3, WANG Jian3

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Abstract

In recent years, the steel spring vibration isolation device composed of steel spring vibration isolator and damping cylinder is used for vibration control of building structures along subway.At present, the device has shortcomings in multi-directional control performance tests and parametric analysis; in practical engineering, the checking calculation method is mostly used to meet design requirements; there are lacks of practicability and optimality in design process.Here, compression and shear tests of steel spring vibration isolator and energy dissipation tests of damping cylinder were conducted in vertical and horizontal directions, respectively.The mechanical performance parameters of the vibration isolator and energy dissipation performance parameters of the damping cylinder were obtained through test data analysis.Then, taking a 20-story Benchmark model equipped with the device as the study object, effects of parameters of the device on the structural vibration control effect under vertical environment excitation and horizontal rare ground motion input, respectively were systematically analyzed through numerical simulation.Finally, effective ranges of performance parameters of vibration isolator and damping cylinder in the device were determined.It was shown that the study results can provide a reference and a guidance for application of steel spring vibration isolation devices in structural vibration control.

Key words

steel spring vibration isolation device / compression-shear test / damping performance test / Benchmark model / environment vibration / seismic response / parametric analysis

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FU Weiqing, ZHAO Peng, HAN Yanyan, GAO Yunfeng, WANG Jian. Performance tests of steel spring vibration isolation device and analysis of its structural vibration control parameters[J]. Journal of Vibration and Shock, 2021, 40(17): 204-212

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