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CAO Hualin, LI Haifeng, JIANG Anlong, LIN Zhipeng, CAO Baoan, ZENG Zhipan. Research on Seismic Performance of Novel Restorable Portal Steel Piers with Built-in Energy-Dissipating Panels[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(3): 78-87. doi: 10.3724/j.gyjz.G22031412
Citation: CAO Hualin, LI Haifeng, JIANG Anlong, LIN Zhipeng, CAO Baoan, ZENG Zhipan. Research on Seismic Performance of Novel Restorable Portal Steel Piers with Built-in Energy-Dissipating Panels[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(3): 78-87. doi: 10.3724/j.gyjz.G22031412

Research on Seismic Performance of Novel Restorable Portal Steel Piers with Built-in Energy-Dissipating Panels

doi: 10.3724/j.gyjz.G22031412
  • Received Date: 2022-03-14
    Available Online: 2025-06-07
  • Publish Date: 2025-03-20
  • Based on the concept of restorable function, a new type of portal steel pier structure with replaceable energy-consuming steel plates was proposed. To investigate the seismic performance of a new type of portal steel bridge pier under axial force and horizontal repeated load, six specimens were tested under quasi-static loading. Based on the analysis of test phenomenon, displacement-load curve, skeleton curve, displacement ductility coefficient and stiffness degradation coefficient, the effects of the main variation parameters such as energy dissipation plate strength, axial compression ratio,and width-thickness ratio on the seismic performance of the new type of portal steel bridge piers were discussed. The results showed that the bearing capacity and displacement ductility coefficient of the new type of portal steel bridge pier specimens were significantly improved by installing replaceable energy-dissipating panels, and the cumulative hysteretic energy dissipation of the specimens increased significantly. The axial compression ratio and the width-thickness ratio of the built-in energy-dissipating panel had great influence on the seismic performance of specimens. Reducing the axial compression ratio could effectively delay the failure of the specimens and improve the cumulative hysteretic energy consumption and restorability of the specimens. Increasing the width-hickness ratio of the built-in energy-dissipating panels could improve the deformation capacity and energy dissipation capacity of the new type of portal steel bridge piers, which was conducive to improving the seismic performance and restorability of the new type of portal steel bridge piers.
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