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基于有限元模拟的高性能材料外包加固墩柱的抗震性能研究
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(1.上海市市政规划设计研究院有限公司,上海 200031;2.上海城投城市发展研究院有限公司,上海 200031;3.上海城市路域生态工程技术研究中心,上海 201418)

作者简介:

Xinzhi Duan, M.E., Senior Engineer. Graduated from Tongji University in 2012. Working at Shanghai Municipal Planning & Design Institute Co., Ltd. Research Direction: Development and Application of New Materials and Structures in Civil Engineering.

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基金项目:

Shanghai SASAC Enterprise Innovation Development and Level Improvement Project (grant number is 2024016); Shanghai Chengtou Group Corporation 2023 Science and Technology Innovation Plan (grant number is CTKY-CYHYD-2023-005)


Seismic Performance of Pier Columns Reinforced with High-Performance Materials Based on Finite Elements
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Affiliation:

(1.Shanghai Municipal Planning & Design Institute Co., Ltd., Shanghai 200031, China; 2.Shanghai Chentou Urban Development Institute Co.,Ltd., Shanghai 200031,China; 3.Shanghai Engineering Research Center of Urban Road Ecological Technology, Shanghai 201418, China.)

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    摘要:

    本文围绕城市高架双柱墩桥梁横桥向抗震能力不足的问题,通过开展有限元数值模拟,对比研究应用纤维增强聚合物(FRP)、工程水泥基复合材料(ECC)及超高性能混凝土(UHPC)作为外包加固材料,对墩柱构件承载力、刚度、延性及耗能的影响。结果表明,UHPC对混凝土柱的承载力提升作用较为显著,ECC和UHPC可较为有效提升混凝土柱的延性和耗能能力。FRP加固对混凝土柱的承载力、刚度及变形能力的提升作用不明显。本研究所得结果可为同类工程加固提供参考依据和数据支撑。

    Abstract:

    This paper focuses on the challenge of insufficient transverse seismic capacity in urban elevated twin-column pier bridges. By conducting finite element simulations, it studies how externally reinforcing pier columns with Fiber-Reinforced Polymer (FRP), Engineered Cementitious Composite (ECC), and Ultra-High Performance Concrete (UHPC) affects their bearing capacity, stiffness, ductility, and energy dissipation. The results indicate that UHPC significantly enhances the bearing capacity of concrete columns, while both ECC and UHPC effectively improve ductility and energy dissipation. In contrast, FRP reinforcement shows no significant effect on bearing capacity, stiffness, or ultimate deformation. These findings provide reference data for strengthening similar projects.

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引用本文

Xinzhi Duan Seismic Performance of Pier Columns Reinforced with High-Performance Materials Based on Finite Elements. Prestress Technology 2025,3(02):16-29. 10.59238/j. pt.2025.02.002

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历史
  • 收稿日期:2025-04-22
  • 最后修改日期:2025-05-20
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  • 在线发布日期: 2025-06-28
  • 出版日期: 2025-06-28