锚固型钢管混凝土叠合柱-宽扁梁修复节点抗震性能研究

魏明阳; 宋林琳; 张学明; 李志鑫; 王军文; 杨航东; 宋鹏杰

doi:10.19713/j.cnki.43-1423/u.T20251486

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锚固型钢管混凝土叠合柱-宽扁梁修复节点抗震性能研究

桥梁隧道与结构 | 更新时间：2026-07-24

- 锚固型钢管混凝土叠合柱-宽扁梁修复节点抗震性能研究
- Seismic performance of reinforcement for anchored concrete-encased concrete-filled steel tubular column to RC wide flat beam repair joint
- 铁道科学与工程学报 2026年23卷第7期页码：3402-3417
- 作者机构：
  
  1.石家庄铁道大学道路与铁道工程安全保障教育部重点实验室，河北石家庄 050043
  2.哈尔滨工程大学航空航天学院，黑龙江哈尔滨 150001
  3.中铁第一勘察设计院集团有限公司，陕西西安 710043
  4.中铁二十局集团南方工程有限公司，广东广州 511300
- 作者简介：
  
  张学明(1988—)，男，河北承德人，高级实验师，博士，从事结构抗震研究；E-mail：xuemingzhang@stdu.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(52578227);中央地方科技发展基金项目(246Z5410G)
- DOI：10.19713/j.cnki.43-1423/u.T20251486
  中图分类号： TU398.9;TU352.11
- 收稿：2025-09-19，
  
  网络首发：2026-07-24，
  
  纸质出版：2026-07-28
- 稿件说明：
移动端阅览
魏明阳,宋林琳,张学明等.锚固型钢管混凝土叠合柱-宽扁梁修复节点抗震性能研究[J].铁道科学与工程学报,2026,23(07):3402-3417.

WEI Mingyang,SONG Linlin,ZHANG Xueming,et al.Seismic performance of reinforcement for anchored concrete-encased concrete-filled steel tubular column to RC wide flat beam repair joint[J].Journal of Railway Science and Engineering,2026,23(07):3402-3417.
魏明阳,宋林琳,张学明等.锚固型钢管混凝土叠合柱-宽扁梁修复节点抗震性能研究[J].铁道科学与工程学报,2026,23(07):3402-3417. DOI： 10.19713/j.cnki.43-1423/u.T20251486.

WEI Mingyang,SONG Linlin,ZHANG Xueming,et al.Seismic performance of reinforcement for anchored concrete-encased concrete-filled steel tubular column to RC wide flat beam repair joint[J].Journal of Railway Science and Engineering,2026,23(07):3402-3417. DOI： 10.19713/j.cnki.43-1423/u.T20251486.

摘要

针对地下框架结构在地震作用下的震后可修复需求，本文提出一种新型的锚固型钢管混凝土叠合柱-宽扁梁节点。在对该节点进行拟静力试验并分析其破坏模式后，提出一种复合修复方案，即在柱端采用外包钢套筒，在梁端采用增大截面法，以实现对节点震损的有效修复。为深入探究修复效果，对修复前后的节点进行了拟静力试验，探讨了其在破坏形态、滞回性能及刚度退化等抗震指标上的差异。同时，建立了锚固型修复节点的有限元模型，并通过与试验结果相互验证，研究了轴压比、修复层厚宽比及修复层长高比对抗震性能的影响规律。结果表明，锚固型节点呈现出梁端弯曲、核心区剪切和柱端混凝土破坏等多种模式，而修复后节点破坏模式转变为弯剪破坏，这表明复合修复方案有效地实现了“强柱弱梁”的设计目标。修复前后的2种节点均表现出良好的滞回性能和承载能力。与修复前节点相比，修复后节点的位移延性系数提高了13.83%，累计耗能提高了45.69%。研究还发现，增大修复层厚宽比和修复层长高比能有效提高节点的承载力和耗能能力，但当修复层厚宽比增加到0.12以及修复层长高比增加到1.63时，其影响已不显著。研究结果可为该类型节点的抗震修复设计提供重要的理论依据和工程应用参考。

Abstract

In response to the post-earthquake repair needs of underground frame structures under seismic actions

a novel anchored steel-concrete composite column-wide flat beam joint was proposed. After conducting quasi-static tests on this joint and analyzing its failure modes

a composite repair scheme was proposed

which included using an external steel sleeve at the column end and adopting a section enlargement method at the beam end to achieve effective repair of the seismic damage to the joint. To further investigate the repair effects

this study performed quasi-static tests on the joint before and after repair

exploring the differences in seismic indicators such as failure modes

hysteretic behavior

and stiffness degradation. Additionally

a finite element model of the anchored repair joint was established

and the model was validated through comparison with experimental results to study the influence of axial load ratio

repair layer thickness-to-width ratio

and repair layer length-to-height ratio on the seismic performance. The conclusions are drawn as follows. The anchored joint can exhibit various failure modes

including beam-end bending

core region shear

and column-end concrete failure. The failure mode of the repaired joint can shift to bending shear failure

demonstrating that the composite repair scheme effectively achieved the design goal of “strong column-weak beam.” Both types of joints before and after repair can exhibit good hysteretic performance and load-bearing capacity. Compared to the joint before repair

the displacement ductility coefficient of the repaired joint can improve by 13.83%

while the cumulative energy dissipation increases by 45.69%. The study also found that increasing the repair layer thickness-to-width ratio and the repair layer length-to-height ratio can effectively enhance the load-bearing capacity and energy dissipation capacity of the joint. However

when the thickness-to-width ratio of the repair layer increases to 0.12 and the length-to-height ratio increases to 1.63

the impact is no longer significant. The research results can provide an important theoretical basis and engineering application reference for the seismic repair design of this type of joint.

关键词

Keywords

references

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