为探究木-混凝土组合梁的抗弯承载力，选取云南乔木松为基材，高强度自攻螺钉作为剪力连接件。采用自攻螺钉钻入木材与现浇混凝土板连接，剪力连接件在木梁上的部分连接基面是否开槽作为变量，研究木-混凝土组合梁抗弯性能。共设计了2组4个试件，采用逐级加载的方法，进行四点弯曲试验，分析组合梁的力学性能。结果表明：组合梁的整体性能较好，部分开槽设计的组合梁在抗弯刚度和整体性能均优于未开槽梁。同等荷载条件下，开槽试验梁的挠度较未开槽试验梁降低了57%，界面滑移较未开槽试验梁减少了50%。理论分析结果与试验结果吻合良好，开槽组合梁的有效抗弯刚度和组合效应系数均高于未开槽组合梁。开槽设计的组合梁拥有更好的整体性能以及刚度和强度。

To investigate the flexural bearing capacity of timber-concrete composite beams, Yunnan pine was selected as the base material, and high-strength self-tapping screws were used as shear connectors. Self-tapping screws were drilled into the timber to connect with cast-in-place concrete slabs, with partial slotting of the connection surface on the timber beam as a variable, to study the flexural performance of timber-concrete composite beams. Two groups of four specimens were designed in total, and a stepwise loading method was adopted to conduct four-point bending tests to analyze the mechanical properties of the composite beams. The results indicated that the overall performance of the composite beams was good, with the partially slotted design exhibiting better flexural stiffness and overall performance compared to the unslotted beams. Under the same load conditions, the deflection of the partially slotted beams was reduced by 57% compared to the unslotted beams, and the interface slip was reduced by 50%. Theoretical analysis results were in good agreement with the experimental findings, showing that the effective flexural stiffness and composite effect coefficient of the partially slotted beams were higher than those of the unslotted beams. The partially slotted design of the composite beams demonstrated superior overall performance, as well as improved stiffness and strength.