Experimental study on mechanical properties of fully assembled composite beams with adhesive bonded bridge deck panels in positive moment region

SHI Guocao; FAN Liang; LIU Wei; WEN Qiang

doi:10.11835/j.issn.2096-6717.2024.041

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Experimental study on mechanical properties of fully assembled composite beams with adhesive bonded bridge deck panels in positive moment region

Civil Engineering | 更新时间：2026-03-30

- Experimental study on mechanical properties of fully assembled composite beams with adhesive bonded bridge deck panels in positive moment region
- Journal of Civil and Environmental Engineering Vol. 48, Issue 2, Pages: 190-198(2026)
- 作者机构：
  
  1.重庆交通大学，土木工程学院，重庆 400074
  2.重庆交通大学，山区桥梁与隧道工程国家重点实验室，重庆 400074
  3.中国建筑第八工程局有限公司西南分公司，成都 610041
- 作者简介：
  
  SHI Guocao (1999- ), main research interest: steel-concrete composite beam, E-mail: 209699738@qq.com.
  FAN Liang （corresponding author）， doctoral advisor， professor， E-mail： fanliang@cqjtu.edu.cn.
- 基金信息：
  
  National Natural Science Foundation of China(U20A20312);Special Key Project of Chongqing Technology Innovation and Application Development(CSTB2022TIAD-KPX0103)
- DOI：10.11835/j.issn.2096-6717.2024.041
  CLC： U443.31
- Received：18 January 2024，
  
  Published：25 April 2026
- 稿件说明：
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石国操,范亮,刘伟等.胶接缝桥面板全装配组合梁正弯矩区力学性能试验研究[J].土木与环境工程学报,2026,48(02):190-198.

SHI Guocao,FAN Liang,LIU Wei,et al.Experimental study on mechanical properties of fully assembled composite beams with adhesive bonded bridge deck panels in positive moment region[J].Journal of Civil and Environmental Engineering,2026,48(02):190-198.
石国操,范亮,刘伟等.胶接缝桥面板全装配组合梁正弯矩区力学性能试验研究[J].土木与环境工程学报,2026,48(02):190-198. DOI： 10.11835/j.issn.2096-6717.2024.041.

SHI Guocao,FAN Liang,LIU Wei,et al.Experimental study on mechanical properties of fully assembled composite beams with adhesive bonded bridge deck panels in positive moment region[J].Journal of Civil and Environmental Engineering,2026,48(02):190-198. DOI： 10.11835/j.issn.2096-6717.2024.041.

摘要

提出一种可更换桥面板全装配钢-混组合梁，其桥面板采用胶接缝连接并配置可拆卸高强螺栓剪力键。为剖析不同接缝形式对全装配组合梁正弯矩区力学性能的影响机制，设计制备4片不同桥面板接缝形式的组合梁试件并完成静力加载试验，分析了各试件的破坏形式、承载力、延性、抗弯刚度、界面滑移等力学特征。结果表明：与现浇梁的弯曲破坏相比，全装配组合梁为弯剪破坏，且主裂缝位置出现在胶接缝附近，为混凝土的内聚破坏；直线形、阶梯形、企口形接缝梁的抗弯承载力较现浇梁分别降低了4.78%、2.07%、2.04%，桥面板以受压为主，使得接缝形式对接缝梁承载力的影响较小；有无接缝对组合梁整体延性影响较大，现浇梁延性系数较直线形、阶梯形、企口形接缝分别高出14.39%、34.87%、7.75%；接缝形式对组合梁整体弹性刚度影响不显著，接缝梁弹性刚度较现浇梁分别降低了0.55%、5.43%、2.06%；现浇梁的梁端部滑移量最大，全装配组合梁的最大滑移则出现在接缝附近；在不同接缝形式中，企口形接缝的强度和刚度表现最优。基于塑性理论提出了考虑高强螺栓连接件和胶接缝桥面板影响的全装配组合梁抗弯承载力计算式。

Abstract

The proposal entails the utilisation of a replaceable steel-hybrid composite beam

accompanied by an adhesive joint bridge panel and a removable high-strength bolt-shear bond. In order to analyze the influence mechanism of different joint forms on the mechanical properties of the fully assembled composite beam in the positive moment zone

four composite beams with different bridge panel joint forms were designed and prepared

and a static loading test was completed. The mechanical characteristics of each specimen

including failure mode

bearing capacity

ductility

flexural stiffness and interface slip

were analyzed. The findings indicate that

in comparison to cast-in-place beams

which demonstrate failure in bending

fully assembled composite beams manifest bending-shear failure

with the main crack occurring near the adhesive joint

indicating concrete cohesion failure. Linear

stepped and dovetail joint beams showed a reduction in flexural capacity of 4.78%

2.07% and 2.04% respectively compared to cast-in-place beams. The bridge deck dominated by compression has a relatively minor impact on the bearing capacity of the jointed beam. The presence or absence of joints exerts a significant influence on the overall ductility of the composite beam. The ductility coefficient of the cast-in-place beam is 14.39%

34.87% and 7.75% higher than that of the straight joint

stepped joint and tongue-and-groove joint

respectively. The overall elastic stiffness of composite beams is not significantly affected. The elastic stiffness of the lap joint beams are reduced by 0.55%

5.43% and 2.06% respectively. The slip at the end of the cast-in-place beams is the largest

while the maximum slip of fully assembled composite beams occurs near the joints. Among different joint forms

the tongue and groove joint exhibits the best performance in terms of strength and stiffness. Finally

based on plastic theory

the calculation formula for the flexural capacity of fully assembled composite beams considering the influence of high-strength bolted joints and adhesive joint bridge panels is proposed.

关键词

Keywords

references

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