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Strength of Materials

, Volume 50, Issue 1, pp 20–28 | Cite as

Real-Time Substructure Tests and Numerical Simulation of Mechanical Characteristics of Natural Rubber-Laminated Bearings

  • T. B. Peng
  • Y. H. Ni
  • Y. C. Wu
Article

Natural rubber lamination is a kind of seismic isolation of bearings often used in civil engineering. The advantage of laminated bearings is large vertical stiffness and small lateral stiffness. In seismic regions, structural periods would be extended and the effect of seismic forces can be lowered using bearings. In previous tests, the static cyclic loading method was mainly used that failed to take account of the loading rate. The real-time substructure testing is proposed to simulate true seismic loads. This testing and test setup were first introduced, and the effect of the loading rate was studied. Then the effects of vertical pressure and peak acceleration of ground motion were studied. At last the test results were simulated by the finite element method, and an accurate method to calculate seismic responses of bridges with laminated bearings was proposed.

Keywords

laminated nature rubber bearing real-time substructure test loading rate vertical pressure numerical simulation 

Notes

Acknowledgments

This work was supported in part by the National Natural Science Foundation of China (No. 51278372) and the Ministry of Science and Technology of China, Grant No. SLDRCE 14-B-15.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Disaster Reduction in Civil EngineeringTongji UniversityShanghaiChina

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