预应力混凝土桥墩及其抗震性能研究新进展
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1.四川成绵苍巴高速公路有限责任公司成都分公司;2.北京工业大学 桥梁工程安全与韧性全国重点实验室;3.四川省公路规划勘察设计研究院有限公司

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基金项目:

国家自然科学基金项目(U21A20154);四川省交通运输科技项目(2022-ZL-05)


Recent Advances in the Seismic Performance of Prestressed Concrete Bridge Piers
Author:
Affiliation:

1.Sichuan Chengmiancangba Expressway Construction & Development Group Co., Ltd.;2.State Key Laboratory of Bridge Engineering Safety and Resilience, Beijing University of Technology;3.Sichuan Highway Planning, Survey, Design, and Research Institute Co., Ltd.

Fund Project:

National Natural Science Foundation of China ( U21A20154 ) ; Sichuan Transportation Science and Technology Project ( 2022-ZL-05 )

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    摘要:

    强震作用下不仅要避免桥梁结构倒塌从而保证桥上通行人员安全,同时应关注桥梁损伤以考虑震后桥梁快速恢复通行功能和修复问题。预应力混凝土桥墩在桥梁抗震方面的优势受到关注,墩内预应力筋可为墩柱提供良好的恢复力同时有效控制震后墩柱损伤,在一定程度上可减小桥梁残余位移以提高震后功能快速恢复性。本文分别从现浇混凝土桥墩和预制拼装桥墩两个方面综述了预应力混凝土桥墩及其抗震性能研究新进展。首先简要介绍了预应力混凝土桥墩的研发背景,总结了墩内配有竖向预应力筋的现浇钢筋混凝土桥墩的研究成果。其次,围绕耗能方式、抗剪措施、墩底损伤控制措施以及理论分析方法等方面介绍和总结了预应力连接预制拼装桥墩的研究新进展。最后,基于当前国内外理论研究、技术研发和工程应用现状总结了预应力混凝土桥墩发展趋势。研究结果表明:相较于现浇钢筋混凝土桥墩,预应力混凝土桥墩震后残余位移显著减小,一般情况下需配置耗能装置以提升耗能能力,墩柱局部损伤减小。预应力连接技术在摇摆自复位抗震桥墩及多节段预制拼装桥墩建设中具有显著优势。预应力桥墩数值建模方法、自复位桥墩性能化抗震设计方法及工程验证、预应力连接预制高墩及其抗震性能和耐久性能、预应力筋锚固与施工技术、先张法预应力桥墩及其抗震性能等是未来值得关注的重要方向。

    Abstract:

    Under strong seismic actions, it is essential not only to prevent the collapse of bridge structures to ensure the safety of people on the bridge, but also to pay close attention to structural damage, in order to facilitate the rapid post-earthquake recovery of traffic functionality and repair processes. Prestressed concrete bridge piers have attracted considerable attention for their advantages in seismic performance. The internal prestressing tendons can provide effective restoring forces for the piers while controlling seismic damage, thus reducing residual displacements and enhancing the rapid post-earthquake functionality recovery of the bridge to a certain extent. This paper reviews recent advances in the seismic performance of prestressed concrete bridge piers from two aspects: cast-in-place concrete piers and precast segmental piers. First, the development background of prestressed concrete bridge piers is briefly introduced, followed by a summary of research findings on cast-in-place reinforced concrete piers incorporating vertical prestressing tendons. Then, the latest research progress on precast segmental piers with prestressed connections is presented, focusing on energy dissipation mechanisms, shear resistance strategies, damage control measures at the pier base, and theoretical analysis approaches. Finally, based on the current status of theoretical research, technological development, and engineering applications both domestically and internationally, the development trends of prestressed concrete bridge piers are summarized. Research findings indicate that, compared to conventional cast-in-place reinforced concrete piers, prestressed concrete piers exhibit significantly reduced residual displacements after earthquakes. In most cases, supplemental energy dissipation devices are required to enhance energy dissipation capacity, and local damage to the piers is reduced. Prestressed connection technology shows significant advantages in constructing self-centering rocking piers and multi-segment precast piers. Future research should focus on several key areas: numerical modeling methods for prestressed piers, performance-based seismic design of self-centering piers and their engineering validation, seismic and durability performance of prestressed high piers with segmental construction, anchorage and construction techniques for prestressing tendons, and the seismic performance of pre-tensioned prestressed concrete piers.

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  • 收稿日期:2025-08-27
  • 最后修改日期:2025-12-29
  • 录用日期:2025-12-30
  • 在线发布日期: 2026-01-19
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