Influence of Rotation-restrained Energy-dissipation Device on the Seismic Performance of a Curved Isolated Bridge

ABSTRACT

This article proposes a rotation-restrained energy-dissipation device (RED) for the seismic control of a three-span curved isolated bridge. The configuration and working mechanism of RED are introduced in detail, and the finite element and simplified model are therefore derived. The seismic responses, parametric analysis and ground motion sensitivity analysis of the isolated bridge with and without RED are conducted to study the effectiveness of RED. Results show that RED can significantly reduce the displacement of the deck and the deformation of the isolated bearings, and make the column shear force at middle and side piers more balanced.

KEYWORDS:

• Curved bridges
• seismic isolation
• parametric analysis
• response control
• rotation-restrained energy-dissipation device

Acknowledgments

The authors would like to acknowledge the supports from the National Natural Science Foundation of China (No. 51578151), the National Ten Thousand Talent Program for Young Top-notch Talents (No. W03070080) and the Scientific Research Foundation of Graduate School of Southeast University (YBPY1966). The authors also would like to thank the data provided by the Pacific Earthquake Engineering Research Center.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [51578151]; National Ten Thousand Talent Program for Young Top-notch Talents [No. W03070080]; Scientific Research Foundation of Graduate School of Southeast University [YBPY1966].