疲劳荷载作用下钢混组合梁的抗弯性能研究综述
Review of Research on Flexural Bending Performance of Steel-Concrete Composite Beams under Fatigue Loading
摘要: 正弯矩区作为组合梁跨中受弯控制区域，其受力主要表现为UHPC板受压、钢梁下翼缘受拉及剪力连接件传递界面纵向剪力。本文围绕疲劳荷载作用下正弯矩区UHPC钢混组合梁抗弯性能展开综述，重点梳理静力抗弯性能、疲劳损伤演化、界面滑移、连接件疲劳性能及疲劳后剩余承载性能等研究进展。现有研究多集中于静力性能、负弯矩区裂缝控制和连接件推出试验，对正弯矩区不同疲劳荷载水平下刚度退化、残余变形、界面滑移及剩余抗弯承载力的研究仍不充分。
Abstract: As the bending moment-controlled region at the mid-span of composite beams, the positive moment region is characterized by the compression of the UHPC slab, tension of the lower flange of the steel beam, and longitudinal interface shear transmission by shear connectors. This paper reviews research progress on the flexural behavior of UHPC-steel composite beams in positive moment regions under fatigue loading, with a focus on sorting out advances in static flexural performance, fatigue damage evolution, interface slip, fatigue performance of connectors, and post-fatigue residual bearing capacity. Existing studies mainly focus on static performance, crack control in negative moment regions, and push-out tests of connectors. Research on stiffness degradation, residual deformation, interface slip and residual flexural bearing capacity of positive moment regions under different fatigue load levels is still insufficient.
文章引用：兰贵, 王琼芬. 疲劳荷载作用下钢混组合梁的抗弯性能研究综述[J]. 土木工程, 2026, 15(8): 36-43. https://doi.org/10.12677/hjce.2026.158198

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