“套筒-预应力筋”混合连接三节段预制拼装桥墩的抗震性能

李卫; 易博; 宋书一; 吴桐; 唐海涛; 赵宁雨

doi:10.11835/j.issn.2096-6717.2026.031

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“套筒-预应力筋”混合连接三节段预制拼装桥墩的抗震性能

更新时间：2026-05-11

- “套筒-预应力筋”混合连接三节段预制拼装桥墩的抗震性能
- Seismic performance of three-segment precast bridge piers with grouted sleeve-prestressed tendon connections
- 土木与环境工程学报 2026年页码：1-12
- 作者机构：
  
  1.重庆巨能建设集团路桥工程有限公司，重庆 401329
  2.重庆交通大学土木工程学院，重庆 400074
  3.重庆高速巨能建设集团有限公司，重庆 401120
  4.重庆市设计院有限公司，重庆 400015
- 作者简介：
  
  李卫（1977- ），男，高级工程师，主要从事桥梁抗震与施工研究，E-mail：awei929@126.com。
  易博（通信作者），男，博士生，E-mail：ybybyb1213@163.com。
- 基金信息：
  
  重庆建设科技计划(城科字2024第3-5号);中国交通运输协会科技项目(2023-JN2024-25);重庆市技术创新与应用发展专项(CSTB2024TIAD-GPX0009);重庆设计集团课题(2023-C9)
- DOI：10.11835/j.issn.2096-6717.2026.031
  中图分类号： U442.55;U443.22
- 收稿：2026-01-13，
  
  网络首发：2026-05-11，
- 稿件说明：
移动端阅览
李卫,易博,宋书一等.“套筒-预应力筋”混合连接三节段预制拼装桥墩的抗震性能[J].土木与环境工程学报,

LI Wei,YI Bo,SONG Shuyi,et al.Seismic performance of three-segment precast bridge piers with grouted sleeve-prestressed tendon connections[J].Journal of Civil and Environmental Engineering,
李卫,易博,宋书一等.“套筒-预应力筋”混合连接三节段预制拼装桥墩的抗震性能[J].土木与环境工程学报, DOI：10.11835/j.issn.2096-6717.2026.031.

LI Wei,YI Bo,SONG Shuyi,et al.Seismic performance of three-segment precast bridge piers with grouted sleeve-prestressed tendon connections[J].Journal of Civil and Environmental Engineering, DOI：10.11835/j.issn.2096-6717.2026.031.

摘要

装配式桥墩凭借施工高效、绿色环保的优势在工程中得到广泛应用，但山区复杂的地形与受限的施工空间严重制约了大节段预制桥墩的运输与吊装。为解决该问题，提出采用“套筒-预应力筋”混合连接的三节段预制拼装桥墩（PSC-GSPT），依托重庆北环立交改造工程，设计制作缩尺比为1∶5的桥墩试件，通过拟静力试验对比研究该拼装桥墩与现浇桥墩（CIP）的抗震性能，而后通过数值模拟分析预应力参数对拼装桥墩的抗震性能影响。研究表明，相较于CIP，由于引入了无黏结预应力筋，PSC-GSPT的峰值荷载与极限位移分别提升了28.6%和41.3%，位移延性系数提高了20.7%；虽然其等效粘滞阻尼比略低，但累计耗能增加了27%，且残余位移显著减小，展现出良好的震后可恢复性。参数分析结果表明，为了避免预应力筋过早屈服并确保结构延性，预应力筋应优先采用中心布置方式，且初始预应力度应控制在30%~50%。研究证实，PSC-GSPT具有优越的综合抗震性能，能够满足抗震设防区对装配式桥墩的受力性能要求，具有良好的工程应用价值。

Abstract

Prefabricated bridge piers are widely adopted for their high construction efficiency and environmental benefits. However

complex terrain and restricted construction space in mountainous regions severely constrain the transportation and hoisting of large precast segments. To address this

a three-segment precast segmental pier system utilizing a hybrid connection of “grouted sleeves and prestressed tendons” (PSC-GSPT) is proposed. Relying on the Chongqing North Ring Interchange Renovation Project

1:5 scale specimens were fabricated. Quasi-static tests compared the seismic performance of PSC-GSPT and a cast-in-place (CIP) pier

followed by numerical simulations analyzing the influence of prestressing parameters. Results indicate that

due to the addition of unbonded prestressed tendons

the PSC-GSPT exhibited increases of 28.6% in peak load

41.3% in ultimate displacement

and 20.7% in displacement ductility compared to the CIP pier. Despite a slightly lower equivalent viscous damping ratio

cumulative energy dissipation increased by 27%

accompanied by significantly smaller residual displacement and good post-earthquake recoverability. Parametric analysis suggests that to prevent premature yielding and ensure ductility

a central layout for prestressed tendons is preferred

with the initial prestress level controlled within 30% to 50%. The study confirms that PSC-GSPT possesses excellent seismic performance

meets requirements for seismic fortification zones

and holds significant engineering application value.

关键词

Keywords

references

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