提出了胶接缝桥面板可拆卸高强螺栓剪力键的可更换桥面板全装配钢-混组合梁。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，设计制备了4片不同桥面板接缝形式的组合梁试件并完成了静力加载试验，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。研究表明：对比现浇梁为弯曲破坏，全装配组合梁为弯剪破坏且主裂缝位置为靠近胶接缝处混凝土内聚破坏；直线形，阶梯形，企口形接缝梁比现浇梁的抗弯承载力分别降低了4.78%、2.07%、2.04%，以受压为主的桥面板使得接缝形式对接缝梁承载力影响较小；有无接缝对组合梁整体延性有较大影响，现浇梁比直线形，阶梯形，企口形接缝梁延性系数大，分别大了14.39％、34.87％、7.75％；对组合梁整体弹性刚度影响不显著，接缝梁弹性刚度分别降低了0.55%、5.43%、2.06%；现浇梁的梁端部滑移最大，全装配组合梁最大滑移在接缝处附近；不同接缝形式中，企口形接缝的强度和刚度表现最优。用胶接缝替代传统湿接缝，可以实现代替现浇的全装配式施工，极大地提高了装配性，对于装配式应用工程中具有施工优势。最后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。

A replaceable steel-hybrid composite beam with an adhesive joint bridge panel and removable high-strength bolt-shear bond is proposed. 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 the static loading test was completed. The mechanical characteristics of each specimen, such as failure mode, bearing capacity, ductility, flexural stiffness and interface slip were analyzed. The results show that compared to cast-in-place beams, which fail in bending, fully assembled composite beams exhibit 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 compared to cast-in-place beams by 4.78%, 2.07% and 2.04% respectively. The overall elastic stiffness of composite beams is not significantly affected. The elastic stiffness of the lap joint beams is 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. Substituting adhesive joints for traditional wet joints enables fully assembled construction as an alternative to cast-in-place methods, greatly enhancing assembly efficiency, and providing construction advantages for applications in prefabricated engineering projects.. 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 rubber joint bridge panels is proposed.

国家自然科学(U20A20312)；重庆市技术创新与应用发展专项重点项目(CSTB2022TIAD-KPX0103)