Seismic Performance of a Novel Self-Centering Energy-Dissipation Brace with Embedded U-Shaped Dampers

Zhengxian Bai; Peng Yu; Ziqin Jiang; Shuo Zhang; Xiaonong Guo

doi:10.13206/j.gjgS25021501

Volume 41 Issue 5

May 2026

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Zhengxian Bai, Peng Yu, Ziqin Jiang, Shuo Zhang, Xiaonong Guo. Seismic Performance of a Novel Self-Centering Energy-Dissipation Brace with Embedded U-Shaped Dampers[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(5): 56-68. doi: 10.13206/j.gjgS25021501

Citation:

Zhengxian Bai, Peng Yu, Ziqin Jiang, Shuo Zhang, Xiaonong Guo. Seismic Performance of a Novel Self-Centering Energy-Dissipation Brace with Embedded U-Shaped Dampers[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(5): 56-68. doi: 10.13206/j.gjgS25021501

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Seismic Performance of a Novel Self-Centering Energy-Dissipation Brace with Embedded U-Shaped Dampers

doi: 10.13206/j.gjgS25021501

1. Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China;
2. Beijing Engineering Research Center of High-Rise and Large-Span Prestressed Steel Structure, Beijing University of Technology, Beijing 100124, China;
3. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China

Received Date: 2025-02-15

Abstract

Abstract

To mitigate residual deformation of structures under seismic action， a novel self-centering energy-dissipation brace with embedded U-shaped dampers （U-SCEDB） is proposed. The self-centering mechanism employs combined disc springs to provide self-centering capability， while a U-shaped damper serves as the energy dissipation system. Numerical simulations were performed on the brace， and the effects of various design parameters on its hysteretic behavior were systematically evaluated through analysis of the hysteretic curves. The results indicated that the proposed U-SCEDB exhibited stable energy dissipation capacity and superior self-centering capability. Specifically， the energy dissipation capacity and ultimate bearing capacity of the brace increased with the thickness of the U-shaped damper， the length of its straight segment， and the thickness of the energy dissipation plate. Additionally， the self-centering capability was enhanced with a higher pre-tension force applied to the steel strands. Increasing the number of disc spring stacks in series significantly enhanced the ultimate deformability of the brace， but the stiffness of the disc springs decreased relatively.
- self-centering energy-dissipation brace,
- disc springs,
- U-shaped damper,
- seismic performance

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References(34)

References

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