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Shaking table test and numerical simulation of an isolated cylindrical latticed shell under multiple-support excitations

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Abstract

In order to study the influence of the ground motion spatial effect on the seismic response of large span spatial structures with isolation bearings, a single-layer cylindrical latticed shell scale model with a similarity ratio of 1/10 was constructed. An earthquake simulation shaking table test on the response under multiple-support excitations was performed with the high-position seismic isolation method using high damping rubber (HDR) bearings. Small-amplitude sinusoidal waves and seismic wave records with various spectral characteristics were applied to the model. The dynamic characteristics of the model and the seismic isolation effect on it were analyzed at varying apparent wave velocities, namely infinitely great, 1000 m/s, 500 m/s and 250 m/s. Besides, numerical simulations were carried out by Matlab software. According to the comparison results, the numerical results agreed well with the experimental data. Moreover, the results showed that the latticed shell roof exhibited a translational motion as a rigid body after the installation of the HDR bearings with a much lower natural frequency, higher damping ratio and only 1/2∼1/8 of the acceleration response peak values. Meanwhile, the structural responses and the bearing deformations at the output end of the seismic waves were greatly increased under multiple-support excitations.

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Acknowledgement

The authors gratefully acknowledge the support from the National Natural Science Foundation of China (Grant No. 51278008) and the National Key Research and Development Plan of China (Grant No. 2016YFC0701103).

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Authors and Affiliations

  1. Spatial Structures Research Center, Beijing University of Technology, Beijing, 100124, China

    Xue Suduo, Shan Mingyue, Li Xiongyan, Liang Shuanzhu & Liu Yi

  2. College of Civil Engineering, Fuzhou University, Fuzhou, 350108, China

    Huang Fuyun

Authors
  1. Xue Suduo
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  2. Shan Mingyue
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  3. Li Xiongyan
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  4. Liang Shuanzhu
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  5. Huang Fuyun
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  6. Liu Yi
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Corresponding author

Correspondence to Shan Mingyue.

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Supported by

National Natural Science Foundation of China under Grant No. 51278008 and the National Key Research and Development Plan of China under Grant No. 2016YFC0701103

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Suduo, X., Mingyue, S., Xiongyan, L. et al. Shaking table test and numerical simulation of an isolated cylindrical latticed shell under multiple-support excitations. Earthq. Eng. Eng. Vib. 18, 611–630 (2019). https://doi.org/10.1007/s11803-019-0525-6

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  • DOI: https://doi.org/10.1007/s11803-019-0525-6

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